SOURCE: 1998 Cavalier No Spark in cylinders 1 & 4
ignition mod. grounds,pcm or timing belt could all be it but, I would have to look at timing first.
SOURCE: code p303
very common problem two things either the injector on that cylinder is bad or the fuel rail need clean out with injection clean a good shop can clean them.
SOURCE: MISFIRING ON CYLINDER 1 VW POLO 1.4 3CYLINDER
I have changed a few cylinder heads under warranty for this type of problem. The exhaust valve guides wear, this causes the exhaust valve to seat badly, giving low compression. if one cylinder compresion reading is more than about 50 psi below the others, then this warrants head removal. It is quite a job, due to the fact that the camshft id chain driven. If you are up for it then once the head is removed, poor liquid into the exhaust ports and see if it leaks out through any of the exhaust valves.
SOURCE: Engine code: Misfire cylinder 1. Replaced plugs
There should be no built up fuel or oil in cylinder. The fuel will be burned off immediately, and there should have been very little unless you have a leaking injector. The only way oil will enter the cylinder is if you have a mechanical failure like worn rings or leaking valve seals.If after replacing the plugs and wires did not correct all or the skip after the first start up and road test then you have another issue causing the skip
SOURCE: I think the coil pack
The coil pack should should be the device you plug your spark plug wires into. if it is round, then it is a distributor not a coil pack, if it is square and looks like there are relays coming of it, it is a coil pack. to replace this, you simply mach the wires to the corresponding diodes on the new device, unscrew the old one and screw in the new one. plugging in any connecters you might have forgotten.
It can be issue with spark plugs or faulty spark plugs. Also
get the compression test done for cylinders. If any of cylinder shows low
compression then required, then that particular cylinder will cause misfire.
Also get obd codes scanned, the error code will let you know
which cylinder is misfiring or all cylinders are misfiring.
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For your trouble shooting I suggest you to refer the help
oinks below. It has step by step details for many engine misfire issues.
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Click the link below:-----
Ford Explorer Cylinder Misfire?
http://whoisbyme.blogspot.in/2012/06/ford-explorer-cylinder-misfire.html
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Engine Misfire codes on Chevrolet Malibu?
http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html
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Cylinder 6 Misfire?
http://howtobyme.blogspot.com/2011/12/cylinder-6-misfire.html
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Misfire on cylinder 4?
http://schematicsdiagram.blogspot.com/2011/12/misfire-on-cylinder-4.html
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While stop engine idles like cylinder missing?
http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html
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Ford Explorer 5.0L: Engine Miss?
http://whoisbyme.blogspot.in/2012/06/ford-explorer-50l-engine-miss.html
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Oil on spark plugs and car misfires?
http://technoanswers.blogspot.in/2012/02/oil-on-spark-plugs-and-car-misfires.html
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Can cylinder misfire Damage the Catalytic converter?
http://schematicsdiagram.blogspot.in/2012/02/can-cylinder-misfire-damage-catalytic.html
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Car misfires and error code P0306 and P0303 is shown?
http://technoanswers.blogspot.com/2012/01/car-misfires-and-error-code-p0306-and.html
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Chevrolet K1500 No spark, random misfire
http://repairhelpcenter.blogspot.com/2012/11/chevrolet-k1500-no-sparkrandom-misfire.html
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2004 Ford F150: Engine Misfire and Lean Code?
http://whatisbyme.blogspot.in/2012/05/2004-ford-f150-engine-misfire-and-lean.html
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1995 Toyota LS: Misfire at idle or low RPM
http://whatisbyme.blogspot.in/2012/04/1995-toyota-ls-misfire-at-idle-or-low.html
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Toyota Corolla:
Random Misfire?
http://technoanswers.blogspot.in/2012/04/toyota-corolla-random-misfire.html
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2006 Ford Freestar: Misfire on Cylinder Number 2?
http://whatisbyme.blogspot.in/2012/06/2006-ford-freestar-misfire-on-cylinder.html
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This will help.
Thanks.
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Bad miss at idle?
http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html
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While stop engine idles
like cylinder missing?
http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html
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Engine Misfire codes for
car?
http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html
Engine Misfire codes?
http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html
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Misfire on cylinder 4?
http://schematicsdiagram.blogspot.com/2011/12/misfire-on-cylinder-4.html
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Oil on spark plugs and car misfires?
http://technoanswers.blogspot.in/2012/02/oil-on-spark-plugs-and-car-misfires.html
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This will help.
Thanks.
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