Question about 2002 Chevrolet Cavalier Coupe

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Engine light is on after cleaning spark plugs

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Why would anyone clean spark plugs??? you better replace them with AC DELCO spark plug.

Posted on Sep 25, 2009

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Posted on Jan 02, 2017

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Crank but no start


Might have a weak spark. I'm thinking it should be more white/blue. Might need to clean the spark plugs if they have a lot of build-up. A little fine grit sandpaper will help, but just enough to clean the spark gap.

May 19, 2017 | Honda Cars & Trucks

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2008silverado 4.3v6 has miss when you ecellrate changed plugs doing it again engine light back on


Since the engine light is back on the code is likely to help you diagnose the problem.
1. If you have a code reader for your car plug it in and it should tell you what the computer thinks the problem is.
Remember for the engine to miss it has to be loosing fuel or spark. The spark plugs are only one of the parts required to make a reliable spark in the plug as the engine is running.
2. Check the spark plug wires and the distributor internal for rust contamination around the reluctor magnet area. The 4.3 chevys are bad for this. Have someone start the car for you at night while you look under the hood for spark leakage. In the dark any wire leaking spark enough to make it miss on acceleration will flash blue lights in the dark.
3. Replace the fuel filter.
4. Check for vacuum leaks in the rubber tubing plugged in to the intake manifold.
5. Make sure the battery to engine ground cable is in good condition at both ends and tight.
6. Make sure the battery to chassis ground wire is connected clean and tight.
Good luck.

Feb 13, 2015 | 2008 Chevrolet Silverado 1500 2WD

1 Answer

How to change spark plugs



REMOVAL PROCEDURE
  1. Remove the ignition control modules.
  2. Clean the spark plug recess area with low pressure air.
CAUTION: Wear safety glasses when using compressed air, as flying dirt particles may cause eye injury.

NOTE: Clean the spark plug recess area before removing the spark plug. Failure to do so could result in engine damage because of dirt or foreign material entering the cylinder head, or by the contamination of the cylinder head threads. The contaminated threads may prevent the proper seating of the new plug. Use a thread chaser to clean the threads of any contamination.
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  1. Remove the spark plugs from the cylinder heads.
NOTE: Allow the engine to cool before removing the spark plugs. Attempting to remove the spark plugs from a hot engine may cause the plug threads to seize, causing damage to cylinder head threads.
  1. Inspect the spark plugs. Refer to Spark Plug Inspection.
INSTALLATION PROCEDURE
  1. Measure the spark plug gap on the spark plugs to be installed. Compare the measurement to the gap specifications.
NOTE:
  • Use only the spark plugs specified for use in the vehicle. Do not install spark plugs that are either hotter or colder than those specified for the vehicle. Installing spark plugs of another type can severely damage the engine.
  • Check the gap of all new and reconditioned spark plugs before installation. The pre-set gaps may have changed during handling. Use a round feeler gage to ensure an accurate check. Installing the spark plugs with the wrong gap can cause poor engine performance and may even damage the engine.
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  1. Install the spark plugs to the cylinder heads.
NOTE:
  • Be sure that the spark plug threads smoothly into the cylinder head and the spark plug is fully seated. Use a thread chaser, if necessary, to clean threads in the cylinder head. Cross-threading or failing to fully seat the spark plug can cause overheating of the plug, exhaust blow-by, or thread damage.
  • Refer to Component Fastener Tightening Notice in Service Precautions.
Tighten the spark plugs to 20 N.m (15 lb ft) .
  1. Install the ignition control modules.

Jul 14, 2014 | 2006 Cadillac SRX

1 Answer

Shaking engine, almost no acceleration, check engine light flashing


How about timing? How about the distributor and rotor? What about the timing chain?

Jan 23, 2013 | 1998 Pontiac Bonneville

1 Answer

Oil pressure light is on and oil is on one of the


1st check quality oil and filter, if oil and filter is good, then remove engine oil pan , clean oil pump strainer, instal oil pan , add new oil and check.
if have oil on spark plug inside of cylinder, you need to overhaul the engine, if oil is over the spark plug ,change the valve cover gasket

Jul 20, 2010 | 1995 Lexus ES 300

1 Answer

2003 jeep rubicon check engine light on


try cleaning egr valve ,dont replace just clean it

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1 Answer

Check engine light and intermittent bucking


You might get lucky here. Go out and open the hood and start the engine when it's dark. See if you can see sparks jumping around the spark plug wires. That will tell you for sure. Otherwise, my first choice would be to put on new plug wires of the highest quality you can find. I've seen this type of problem before, and it can be made worse if the boots on the wires are not clean or too much grease was used at the factory. The solution was to clean everything and replace the wires and spark plugs because carbon tracks have been created that can't be easily (if at all) cleaned from the spark plug insulators. The coil towers will probably be okay if you clean them well.

Apr 16, 2009 | 1998 Subaru Forester

1 Answer

Engine Fault light illuminates. Ford KA Collection


have you totally cleaned the fuse box and fuses

Jan 01, 2009 | 2000 Ford Focus

2 Answers

Ford Escape 3L 2002 Rough idle


generally, when the engine is washed, water gets trapped behind the spark unit and stays there, creating a shorting path for spark plug current. best to dis-mount the spark unit (follow plug wires back to source) and dry and clean it thoroughly.

Jun 19, 2008 | 2002 Ford Escape

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