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P0302 Cylinder 2 Misfire Detected

 
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Old 17 Jan 2013, 05:12 pm
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Default P0302 Cylinder 2 Misfire Detected

2004 Cruiser, base model, non turbo.

On Monday car started running rough/misfire, engine light came on, it would run fine/rough intermittently.
Car was near empty on fuel, so I thought perhaps some dirt/debris in the fuel maybe.
Put some gas in today, about 1/2 tank, engine light went off and ran fine.
Took it to have it smogged soon after, turned off car temporary while waiting.
When restarted, right back to running rough, went ahead with test anyway (free retest).
Test failed of course and the error code was P0302 Cylinder 2 Misfire Detected.

Unfortunately funds are tight and I can't take to someone.
Any suggestions on what I can do myself would be appreciated.

Is this possibly symptomatic of a bad spark plug wire? or spark plug itself?

thank you
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Old 17 Jan 2013, 05:34 pm
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Default Re: P0302 Cylinder 2 Misfire Detected

That's where most people start when they get the fault code for any of the cylinders (P301, 302, 303 304). It can never hurt to change both plugs and wires. An easier way is to swap wire and plug from the cylinder your getting the code from to a different cylinder and see if the code changes. If it does, then yeas it's probably the spark plug or wire that giving the problem. If not, it could either be internal or you might have a vacuum leak around the cylinder either in the meeting place of the upper and lower intake or around the seems of the upper manifold.

P.S. Welcome to the forum.
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Old 17 Jan 2013, 06:46 pm
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Default Re: P0302 Cylinder 2 Misfire Detected

Quote:
Originally Posted by CREWZIN View Post
That's where most people start when they get the fault code for any of the cylinders (P301, 302, 303 304). It can never hurt to change both plugs and wires. An easier way is to swap wire and plug from the cylinder your getting the code from to a different cylinder and see if the code changes. If it does, then yeas it's probably the spark plug or wire that giving the problem. If not, it could either be internal or you might have a vacuum leak around the cylinder either in the meeting place of the upper and lower intake or around the seems of the upper manifold.

P.S. Welcome to the forum.
Totally agree, Nitro can probably help with the get ready on the smog test after you get this fixed.
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