Question about 1997 Chevrolet Tahoe

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Change plugs,wires,cap & rotor.... everything accel ... would that cause the misfire ???

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  • Chevrolet Master
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Was it missfiring before you replaced the parts ?
Is the check engine light on now ?

Posted on Dec 11, 2012

  • Boom Dec 11, 2012

    Yes it was .... Took it and had the timing check and it was off ..so had it reset... Light is still on showing muti misfire & o2 senors reading.

  •  Stephen
    Stephen Dec 11, 2012

    I doubt the Accel parts would make much difference compared to OEM. What are the codes ?

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Cylinder misfire p0300


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It has a misfire ,we changed the plugs and the coil pack and wires still has a misfire what else could it be


Gas or compression. Check the injector circuit on 1 and 3. Are they pulsing, to put gas in the cylinders? Do a compression test to rule out loss of compression as cause for the misfire.
Kind of odd it would be 1 and 3, but that is one right after the other in the firing order of 1-3-4-2...so, you have a single coil? So you have a distributor-examine closely the distributor cap and rotor if those were not changed too, with the plugs and wires. Look for damage, little black tracks that indicate shorting of the spark, maybe damage at the electrode tips on the inside of cap on 1 and 3 plug wire towers. Most people change the cap and rotor when doing the plugs and plug wires.
Just a possibility also, that the injector ground wires for 1 and 3 might share the same ground. That is to say, they might splice together before going to the computer where the computer internally grounds injector circuits to cause pulsing. Well, those are my thoughts, good luck. And let me know what you find, always interested.

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I have a 98 honda accord 5 spd it has a 4cyl motor vtech i just need to know how to fix a miss fire in cylinder 2 and wich one is cylinder 2


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EX.Below are spark plug on engine
engine
-------------------------------
' (oil cap) '
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Your misfire can be cause by couple of things but the cheapest way that you can try to fix your car is to do a tune up by replacing:
1)all spark plugs
2)do a oil change
3)spark plug wires
3)distributor cap and rotor

note misfire can be cause by:
1.bad gas
2.spark plug and/or wire
3.distributor cap and/or rotor
4.valve adjustment
5.injector
6.off timing
7.ECM
8.bad wiring(power, ground or feed line)

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1 Answer

We have changed the plugs in my Echo and it is still miss firing please help. No engine lights have come on


Check the spark plug wires, coil packs or cap & rotor whichever the vehicle is equipped with. Most likely you have a bad wire or coil/cap/rotor. Also check the timing if it is out of adjustment it will cause the engine to misfire.

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My truck backfires occasionally and misfires.


Check fuel pressure. When does it backifre, Idle? on accel? cruise? all the time? sometimes? help us help you.

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