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How to tell if ignition timing is off

Ignition timing is measured in degrees of a crankshaft rotation before top dead center (BDTC). Spark plugs need to fire at the right time, which can be achieved by advancing or retarding the timing of the engine. Ignition timing advancing means that the spark plugs are firing earlier in the compression stroke, farther from TDC In a situation where the ignition timing is retarded too far, the plugs ignite the fuel too late, allowing it insufficient time to burn completely. This causes a loss of power and poor fuel economy. Hesitation and backfiring will accompany the loss of power causing the plugs to foul leaving them with a black sooty appearance If the ignition timing is too far retarded it will cause the spark plug to ignite the fuel-and-air mixture too late in the combustion cycle. This results in the fuel-and-air mixture not being fully burning and ignition taking place after the piston has already begun moving downwards in its cylinder on the power stroke of the combustion cycle

Advancing vs. Retarding Ignition Timin

You can check it with a Timing Light. On the right side of engine cases,below where the 2 cylinders meet, is a large Allen screw Overheating, lack of power, pinging. Most modern ignition systems have some sort of electronic advance built in, so the timing changes with rpm. If the timing is too far off the ignition will still produce a spark but the engine won't start. But that only happens if something is seriously twisted or the flywheel key is sheared Usually if the timing is off you will hear a knock or a ping. you'll overheat and hesitate alot. If the timing is too far adavanced, excessivie idiling will occur and pre-ignition wil Re: What happens if timing is off? The base timing on an engine can typically be used to adjust the idle of the engine on a two stroke. As long as the fuel system is funtioning correctly, you can vary that by several degrees and you'll know by the rpm's at idle in gear when you have it right. The WOT timing is pretty critical saw your pics, and trust me, its off. I know the marks look good, but its off. Did the same exact thing with two other motors.. The marks lined up but it ran like crap, and the timing light was off. Just slip it off, and while holding the belt tight, rotate the crank so the belt moves one tooth further on the cams, then put it on, and check timing

Symptoms of Retarded Ignition Timing It Still Run

Ignition timing controlled by ECM. You would probably get a check engine light if you didn't get your valve timing marks right. I've seen them run (not well) being off by 3 teeth, don' Ignition Timing- how do I know if it is off? Discussion in 'Sportster Models' started by Maustarman, Feb 18, 2015. Page 2 of 2 < Prev 1 2. Maustarman Active Member. 131 26 3. Double checked cam timing, readjusted the push rods, installed Pistons with deeper valve pockets. The ticking sound is Gone How do you know if your ignition timing is off? Symptoms of incorrect ignition timing are poor fuel economy, sluggish acceleration, hard starting, backfiring, or pinging or spark knock. Too little spark advance will cause low power, bad gas mileage, backfiring, and poor performance

Ignition Timing - Your Engine Knows, Timing Is Everything Your engine needs proper ignition timing to ignite the fuel at, exactly the right time. So, what happens if the ignition system fires, at the wrong time. As a result, most of the time, power will fall while, fuel consumption and emissions will increase Ignition timing is critical for engine performance and longevity. See the result of incorrect ignition timing. Learn the difference between initial and total.. Ignition timing is tough to understand, but easy to adjust and set. Just for your edification, I'll go into the what's what on timing on this page, but if you have zero interest in all of the complexities of ignition timing, why it's important to how well your engine is running, and why it can be disastrous if it's off, you should skip all of the tech talk and simply get out your manual to. TURN THE BODY ONLY A VERY SMALL AMOUNT in the clockwise direction (just maybe a 1/16 of an inch from the reference marks lining up) and tighten down the clamp bolt. Now crank the engine and see if it turns faster. If it does, take it for a ride and see if the pinging is gone

Ignition Timing Symptoms It Still Run

  1. The ignition system is the starting system for your small engine. Whether you start the engine with a pull rope or the turn of a key on an electric start motor, you're relying on the ignition system to produce a spark inside the combustion chamber. Small Engine Ignition Parts. Flywheel with magnets; Coil or Armatur
  2. g is off, chances are you'll know because your car will not be running well, if it's running at all. Your ignition ti
  3. g. Ignition ti
  4. g has to be set properly. Symptoms of poorly-set ti
  5. g and total ti

Ignition Timing- how do I know if it is off? Harley

If the flywheel key has been sheared, then the ignition timing is affected. The magnets will still pass by the ignition coil, but the spark will occur at the wrong time. The piston will not be at the correct position, and the engine will not start. The lawn mower timing has been affected! Remember,a spark will be produced anytime the magnets. Find Ignition Timing. Free UK Delivery on Eligible Order Loosen the 3 anchor bolts and turning the distributor clockwise would retard the ignition timing. Turning it anticlockwise would advance the ignition timing. Timing mark is located on crank pulley and the correct timing should be the center mark of the 3 lines ( would be marked Red if the paint is still there) A 12-volt test light is your best friend when diagnosing ignition problems that keep a car from running. If your car still has points, a tach/dwell meter and a timing light—preferably a dial-back type—are pretty important cousins to your test light when it comes to figuring out why it's running poorly Retarding the ignition timing means that the spark has less time to become energised Before Top Dead Centre (BTDC), and so the force with which the piston comes back down after it has reached TDC.

The first one is the TDC you're looking for when concerning ignition timing. The #1 piston will be at the top of the cylinder and your crankshaft timing mark will be aligned to the 0 witness mark. Pull the distributer body from the engine before rotating your engine's alignment to TDC. Then, carefully reinsert the distributor so that its spark. I have just installed a new rebuilt 1969 327 in my 66 Chevelle. Fired it up for the first time and it seems to run fine. It has a HEI ignition and a high output cam. I went to set the timing and the timing mark on the balancer is approx. 2 away from the tab when I have a timing light on..

Somehow when you lined up the dots on the timing set you was off one. When I built my engine the #1 piston was all the way up, the timing marks on the balancer were lined up, the lifters for cylinder 1 were all the way down, and the dots lined up on the timing chain. You wouldn't have to move the crank but a few degrees to be off a tooth The TFI module is also known as the Ignition Control Module (ICM) which reports engine position and rpm to the PCM. The PCM then determines the proper spark timing and advance, and returns a reference signal to tell the TFI module to switch the coil, thereby by creating a spark Ignition timing refers to the point during the combustion cycle at which the spark plugs fire, and is expressed in degrees of crankshaft rotation in relation to the top dead center (T.D.C.) position of the pistons. Specifications for timing include the number of degrees before or after top dead center, and the required engine speed at which the. If the flywheel key has been sheared, then the ignition timing is affected. The magnets will still pass by the ignition coil, but the spark will occur at the wrong time. The piston will not be at the correct position, and the engine will not start. The lawn mower timing has been affected! Remember,a spark will be produced anytime the magnets. Remove the distributor cap and check which plug wire is the closest. That should be #1. You can do this several times until you are sure. Besides being 180 out you could also have the firing order right BUT IN THE WRONG DIRECTION. Easiest way to determine rotation is watch what direction the rotor turns

What are some signs of timing be off? Adventure Ride

  1. g is to identify the exact position of the flywheel's magnet in relation to the coil when ignition occurs. To do this right, you need a plain old induction ti
  2. g mark is correct. If you are building an engine or having one built at a shop, make sure the ti
  3. g to reduce knock and prevent engine damage. Typically, the knock sensor is mounted on the engine block or cylinder head. Some engines have more than one sensor

Posted February 15, 2007. depends on how hard you push the bike. general rule of thumb valve shim adjustment should be checked every 6-8 hours. hard starting is an indication of required valve adjustment. After you have checked the valves several times you get the feel of when to do it Ignition System - Delco EST 23118 Timing Out of Synch NOTE! Use this procedure if the rotor/hous-ing/block relationship was not marked, or if the crankshaft has been rotated and the ignition timing is completely off. 1. Move number 1 piston to firing position (both valves for number 1 cylinder are completel The reading will drop off if you advance too far, so turn the distributor counter-clockwise (retard timing) to go back to the peak reading on your gauge. 6. Once you have established the peak reading, retard the timing (turn distributor counter-clockwise) to reduce the reading by about 1 inch to reduce ping And if the timing is correct, you can leave it as is. I've had them a tooth off before and if there's enough room to rotate the distributor where the timing is right, they'll run okay. It's just my OCD that won't let me keep it that way. I've also know of people to just rotate the plug wires one post over on the distributor

This is a little how-to for setting the initial ignition timing on a small block Chevy before its ever been run. Note* this post assumes that you already know how to time a running engine, just not one that never been run before or has had its distributor removed and its timing settings lost Understand the ignition cycle. The four strokes in the 4-cycle engine refer to the process of intake, compression, power, and exhaust. The timing of the ignition refers to the point between the compression and the power strokes at which the spark plug fires, creating the combustion that results in your horsepower, forcing the piston down into the cylinder Adjust engine timing to specification (refer to Ignition Timing). Basic ignition Timing Adjustment 3.9L Engine. Locate and ground out the carburetor switch idle stop contact with a suitable jumper wire. Disconnect and plug the vacuum lines at vacuum transducer on the SCC and the air switching valve on the emissions air pump CD ignition use a separate coil and ignition box along with the distributor, and the system makes it easy to fire a really hot spark all the way through the rpm range. Out of the box, an MSD CD. A professional and experienced mechanic will know how to inspect all of these supporting components if the timing belt needs to be replaced. 3. Engine misfires. A worn out timing belt might also impact the engine's fire rate. The timing belt is attached to pulleys that drive the crank and camshaft as we've indicated above

Sure, many HD engines have a timing window and a mark on the flywheel to tell you when you're at TDC, but it's up to you to figure out which TDC it is. To identify Compression TDC, watch your valvetrain as you rotate the motor in the forward direction The timing chain has the important job of synchronizing the crankshaft rotation with the camshaft. This direct link provides the timing of the valves during their opening and closing sequences. Without precise timing, which a good timing chain in good working order provides, the ignition and camshaft timing will not perform in the precise. 180* off means that the rotor is roughly pointing at the #6 plug wire on the cap at TDCC. Won't run like that. Sounds like you're timing is retarded like John mentioned. Check that the firing order on the cap is correct. After you do that, check it again After this is in place, screw the screws to lock the ignition cup back on, and remove the feeler gauge. Reattach the spark tester to see if you now have a spark. If the tester indicates that you have a strong spark, you can glean that there was debris or that the distance between the ignition coil and the fly wheel was wrong A faulty timing belt is often to blame for timing and compression issues, so start there. You'll need to learn to use a timing light and find the timing indicator on your engine's main pulley. If your car has a distributor, timing can be adjusted by simply rotating the distributor to change the ignition points

Why Ignition Timing Is So Important for 2-Stroke Engines . The cause of this unique problem with 2-stroke engines is the ignition timing. If the timing is close to TDC (top-dead-center) it is possible to catch the piston just at the wrong time with the result that the engine runs backward I think what he meant was leaving the distributor gear itself in place and turning the housing a hair/click (a tooth) right or left (adjusting timing). Again, you will know how far its off right away. If done correctly #1 at TDC, etc. then the guess work is eliminated and so does the myth Rebuilt the carbs, checked timing, new coil, new wires, new plugs, doesn't seem to matter. A few people have suggested that it sounds like the ignition timing is off. I've played with the timing a little bit but I honestly have no clue what I'm doing. I have yet to have anyone tell me which direction on the stator advances & retards timing Static and strobe timing an old houndog CB750 Be sure to have the ignition off before you start to hook things up. Discnnect the two wires connected to the 1-4 points and push them aside block a few times just to let the neighbors know your're alive and well should do). Once it's warmed up and idling normally set the idle to abou -Took off water pump and balancer/dampener-Removed old optispark but I DID NOT mark my timing :craz28:-I tried bolting on the new MSD Pro Billet anyway, got nothing From what I understand, I need to set my timing the old school way, and please correct me if I am wrong. 1. Bring engine to TDC on firing cylinder 2

After fittimg the kit it did start up but the timing had moved to between 1 & 2 marks. I adjusted the timing back to where it had been, and again so far so good. I then read that one should keep advancing the ignition until the engine pinks in top gear, accelereating from 30-50mph. That is when the problems started Turn the ignition Off and plug back in the CKP sensor to the harness connector. Set your DMM to a low DC voltage setting so that you can read millivolts. Touch the DMM black lead to battery negative. Then, using the meter red lead, back probe the black, ground wire at the harness connector or CKP sensor Knowing how to set ignition timing by ear can be a nice skill if you know how to do it. To set your car's ignition timing by ear, warm the car's engine, hold the brake, and rev the engine . Advance it to hear the pinging, and then back it up so that the rattle sound goes out

How can you tell if timing is off? - Answer

I got about 150-200 miles on my ATK crate 302 and I'm curious to know what ignition timing setting you set at in your 302's. My setup is as follows: I am currently set a 10*, with the engine being pretty much stock should I try running it at 8*, 10* or 12* to get the best performance out of it Hello I know your post is a little old but I have a D16y7. I was wondering the correct procedure you used to put the ignition timing back on spot. My ignition timing is too retard but timing is correct. This would be helpful thanks for your time

What happens if timing is off? Boating Forum - iboats

  1. g refers to the ti
  2. g belt is not a bad idea at this mileage I don't think its the cause for the check engine light u need to get the codes u can do that by cycling the ignition key on off three times ending with key in the on position read codes in the odometer area (P # ## #
  3. 1 - Connect a spark tester between the ignition coil wire and a good engine ground. 2 - Crank the engine and check for spark at the tester. 3 - Turn the ignition switch OFF. 4 - If no spark occurs, check the following: a. Inspect the ignition coil for damage or carbon tracking. b
  4. g is off. I think that my ti
  5. g marks to time the camshaft sprocket will screw you up. YOu need to find TDC. NOt that is not as tough as it sounds. Partly because the cam and sprocket teeth are farely course so are either OK or a long way off. Rmember the Ignition ti
  6. g. Torque: 19 N·m (195 kgf·cm, 14 ft·lbf) Remove the SST from the DLC1. SST 09843-18020. Further check ignition ti

If all timing marks line up and ignition timing is way off

Here is how changes in the static ignition timing affects the power band of a Japanese dirt bike. Advancing the timing will make the power band hit harder in the mid range but fall flat on top end. Advancing the timing gives the flame front in the combustion chamber adequate time to travel across the chamber to form a great pressure rise Common Bad Ignition Switch Symptoms: Chevy S10. Here are some of the most common symptoms of an ignition switch failing in your S10: 1. Stalling on the Road. The most noticeable symptom of a bad ignition switch is stalling. Your S10 stalls because the faulty switch turns off the fuel pump or power to the ignition Far and away the best time to identify the sound of a timing chain that is about to jump is going to be listing to it when you first start the vehicle. If the timing chain is not metal, it's really a timing belt, and they can be a lot more difficult to tell if they are going bad. Timing belts are a normal maintenance item on a vehicle And if your ignition timing is off, your engine's life and performance will suffer. If you engine's ignition timing is retarded too much, you will have a hard time getting your engine to idle, have pronounced flat spots during acceleration and have a loss in overall power

How can i tell if my valves are bad or timing is off

  1. An ignition condenser is a capacitor that is designed to hold a small amount of current inside the engine's ignition system. Its main purpose is to act as a ground for the electric charge to prevent the two electrodes from sparking with each other
  2. g point an electric current is fired off to the spark plug. The spark ignites the air and fuel mixture. This ignition starts at the spark plug and flame fronts travel up to the top of the chamber, out to the sides of the chamber and down to the top of the piston
  3. g is incorrect or the engine is running extremely lean. There are other causes but these are the two most common. Ignition ti
  4. g As dew point and air temperature get closer together (there is more moisture in the air), you can increase ignition ti
  5. g TOO MUCH at any speed will result in less power, and may result in damage to the engine. The damage can be severe, in an engine that does not have anti knock sensors and computer controlled ignition ti

other hand retarding ignition timing will allow the engine to rev higher and. make better power, but basically if i time the ignition to 1.4 mm before. top dead center (factory setting) there should't be any need to advance. the ignition as rpm goes up, mainly because the mixture is broken up I know this is an older thread but I am having timing isssues right now and hopefully I can get some advice. I have a Pertronix Flamethrower distributor in my 383. Stealth heads with domed KB pistons (KB400). Holley 830 and Torker intake. Voodoo Cam. I finally got my timing tape on it yesterday and got to look at it quickly before it flew off this guy can tell where my timing is at by looking at my plug which he ties all in to jetting. he was using some 50 cent words about the type of fuel i was using apparently the point on the electrode where the oil goes from black to cleaned off is a timing mark and will move up or down the electrode from timing adjustment A weak or damaged ignition coil can cause engine misfires, stalling, poor performance, and lower fuel economy. A completely faulty ignition coil can often keep the vehicle, especially a 4 cylinder vehicle, from running at all. If you're having an ignition coil issue, you'll want to test your coils to determine which one is having problems Step 3 - Check the Switch. If your engine won't start, then you should check the ignition switch. Turn the key to the first click and see if the neutral light comes on. If the light doesn't come on then this suggests that there is a problem with the ignition switch itself. If this is the case then the entire switch needs to be replaced

The VOES, responding to the low vacuum, switches OFF, retarding the timing to about 10 degrees (again, Crane Hi4) while still at idle speed. As RPMs build and enough vacuum develops, the ignition throws in more advance - by 3,000 RPM with the throttle rolled off enough to hold that speed, you'll see about 35 degrees of advance Backing off on the timing gives a higher idle but now the timing mark is at more like 10-15 deg, not at 5 where it should be. No pinging this time, engine seemed to run fine again, but definitely nowhere near the power it used to have or should have when I took it out for a test drive. WTF I said

Once the prepurge timing is up (if so equipped), the silicon carbide igniter heats up to a proper ignition temperature (above 1,800°F) in either 17 or 34 sec, 20 or 40 sec for some models (depending on the manufacturer of the module) K-Series Static Ignition Timing Symptoms of improper timing include hard starting, backfiring through the carb, lack of power, stalling on throttle-up, overheating, and rough running, to name a few. This particular engine started hard and backfired through the carb while cranking. It also would not throttle up without stalling

Pre-Ignition. Pre-ignition (self-ignition) occurs when the fuel mixture in the cylinder burns before the spark-ignition event at the spark plug. Pre-ignition may or may not cause permanent engine damage, but it does lead to engine inefficiencies and may cause engine damage if it is a severe or continuous event High-performance ignition systems are an excellent way to increase power, drivability, and durability in your street machine. Sometimes, installation errors or mishaps can cause issues that prevent them from working properly. Follow along to troubleshoot your ignition gremlins and make sure your MSD box is working up to its potential A damaged IAT sensor will produce trouble codes. These trouble codes will be processed by the code reader aspect of the OBD2 scanner, so you'll know when the sensor is broken. Ignition Timing. The live data for Ignition Timing represents the amount of delay the vehicle's computer is adding before the ignition commences

The timing that you need during cranking and at an idle is not sufficient for high-RPM operation. Conversely, ideal high-RPM timing is not going to go over well during cranking or low speed operation. As RPM increases, the engine requires different ignition timing due to a list of changes that occur to the air/fuel mixture entering the cylinder An uneven air/fuel mix, erratic ignition timing, a misfire, misadjusted valves or a manifold leak near one or two cylinders also are possible causes. If vacuum drops intermittently at idle, one or more valves may be sticking open or dragging. Higher-than-normal vacuum at idle is a common clue to overly advanced ignition timing, while low vacuum.

Timing question, signs of timing chain off a tooth

To prime a fuel injection system, turn the ignition key to the on position and leave it on for 3-4 seconds. Now turn it off and wait for a couple seconds. Now repeat this 3-4 times. The electric fuel pump will run for 2 to 3 seconds each time. Doing this 3 to 4 times should be enough to bring the system up to pressure The timing is set by adjusting the link rods inside the engine. Setting the timing on the Johnson outboard should take around an hour. Items you will need. Flush attachment. Timing light. Step 1. Hook up a flushing attachment to the end of a garden hose, place it over the engine's water inlets and then turn the hose on full blast Ignition Timing is the process of setting the angle relative to piston position and crankshaft angular velocity that a spark will occur in the combustion chamber near the end of the compression stroke. To break it down in simpler terms, timing is setting where you want the spark to occur relative to piston position and speed

What makes the timing on a car to suddenly be off time

After it is cooled off, switch the emergency brake on. Open the hood and disconnect the negative battery cable attached to the battery end terminal. If needed, you might require a tool like a wrench to disconnect the cable. Remove the Ignition Coils . First, you need to locate the ignition coils. Look near or on the engine for the coil pack Mags off. With the palm of your hand placed on the cylinder head fins, go from cylinder to cylinder comparing the temperatures. The cylinder with the bad plug will be colder, if not dramatically colder. Trace the ignition harness from the bad mag to the cold cylinder spark plug and you will find the non-firing or misfiring spark plug If you were to put a timing light on a car going down the highway with the vacuum advance properly connected, you would be extremely surprised to see somewhere around 40-50 degrees of ignition timing The symptoms of a bad ignition coil are mostly manifested as difficulties starting the car, a stalling engine, and loss of power while on the road. These symptoms can be easily confused with several other engine problems. Therefore, we need to know how to diagnose a bad ignition coil

Timing Off??? Tacoma Worl

Therefore to get the timing you want at higher rpm, you overly advance the base timing or timing at idle, so when it retards as rpm increases, it lands where you want it. If Alvin ever owned a clone, or actually dyno'ed one, or did any work on them whatsoever, he'd know this. There are just some things you can't figure out with a spreadsheet Place a 0.08- to .012-inch feeler gauge tool between the flywheel magnet and ignition armature legs to adjust the ignition armature air-gap for proper ignition timing.

Ignition Timing- how do I know if it is off? Page 2

Took the front cover off this morning and removed the timing plug and put engine at TDC(T lined up in sight window). Looked at cam alignment and timing mark on block is at 12 and cam gear is at 10-so definitely out of time. Now, the chain is loose and the tensioner is not resting on the chain guide-don't now if this is right or wrong Too advanced ignition timing will cause the engine to start knocking or pinging. Because of this, a faulty ignition timing could, of course, cause an engine knock. Unfortunately, this does only apply if you have an older car with adjustable ignition timing on either the distributor or an adjustable cam or crankshaft position sensor

Can You Set Timing Without A Timing Light? - batescomp

Hooking the timing light to any plug wire will only light up the mark in 2 spots, 180 degrees apart from each other so we know timing light connection wasn't an issue. By indication of the moving timing mark between low and high idle, the mechanical advance mechanism seems to be functional The (COP) ignition is a zero-moving parts assembly that replaces the: Mechanically rotating distributor shaft. Spark plug wires have always been the weak link in the whole ignition process. As a result, eliminating the plug wires improves long term reliability. Also, by placing the coil as close as possible to the plug; the (COP) ignition also. Pull off the cap from the distributor housing, and make sure not to unplug the ignition wires. With the Phillips screwdriver, remove one rotor retaining screw underneath the rotor. Then, remove the rotor and set it aside. Gently pull off the dust shield/inner cover of the distributor housing to access the ICM

Ignition Timing - Your Engine Knows, Timing Is Everythin

Ignition timing on Kohler engines. Gapping the ignition points at .020 has always been the standard answer for how points should be set. That probably will get you into the ballpark where the engine will run, but with a bit of additional effort you can improve the engine's power and performance If the crank turns okay, keep turning a full 360 degrees then recheck the cam timing. At the crank, the timing mark is a small t to the left of the 1-4 mark. If the crank doesn't turn with reasonable effort, STOP. Something is jammed. A likely candidate is the cam chain, having slipped off the teeth on the crankshaft A worn spark plug not only wastes fuel but also strains the whole ignition system because the expanded gap (due to erosion) requires higher voltages. Normal rates of gap growth are as follows: Four-Stroke Engines: 0.01~0.02 mm/1,000 km (0.00063~0.000126 inches/1,000 miles) Two-Stroke Engines: 0.02~0.04 mm/1,000 km (0.000126~0.00252 inches/1,000. How to Test the Coil on a Leaf Blower. If your leaf blower has fuel but fails to start, either the ignition coil, the spark plug lead, or the spark plug is faulty. The magneto on your leaf blower. Mid-'61 wheels introduced a double line for the rear cylinder timing mark. It is NOT the same as the front cylinder TDC dot. Then somewhere in the Shovel era, which is too modern for me to care exactly when, they switched the line to TDC, and a dot became the front cylinder timing mark, and introduced a double-dot for the rear

A. Engine Ignition Timing Your vehicle's engine ignition timing will be inspected during the smog test. The smog technician will ensure ignition timing is set properly, and the system is supplying electric current to the sparkplugs at the correct intervals. Spark, 15,000 to 20,000 volts, is created at the engine's ignition coil Run the car through the gears and observe its performance. Pull over to the side of the road and advance the timing a small amount. Drive the car again and repeat until the engine starts to ping under load. At this point, back off the timing just enough to eliminate the pinging. Tighten down the distributor clamp 15,499 Posts. #6 · Dec 17, 2016. My guess is you have a timing chain that got loose and jumped a tooth and cam no longer properly timed with crank. Otherwise spark plug wires off at cap or injector wires out of order. I once played a joke on my bud with his 440 road runner and moved all the plug wires around one spot