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Cylinder 2 Misfire Help

 
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intelinside
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PostPosted: Sat Jun 02, 2012 3:55 pm    Post subject: Question Cylinder 2 Misfire Help Reply with quote

Hey guys,

My car recently threw a cylinder 2 misfire code on my 2003 3.4 Impala. I've replaced all injectors about 8,000 miles ago, I replaced the coils, spark wires, plugs, and the injector for cylinder #2 this past week, but it's still throwing a cylinder #2 misfire code.

I'm curious as to what else is causing this problem... Any Ideas?


Thanks for the help! Very Happy
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k6ng6r00
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PostPosted: Sat Jun 02, 2012 10:33 pm    Post subject:   Reply with quote

have you tried a leakdown test?

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Last edited by k6ng6r00 on Sat Jun 02, 2012 10:38 pm; edited 1 time in total
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ScottMPala
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PostPosted: Sat Jun 02, 2012 10:38 pm    Post subject:   Reply with quote

i bought a set of spark plug wires that had an arc from a brand new wires. I was able to see the wire sticking out from under the boot. try switching wires around to see if the miss moves to another cylinder, ie move the cyl 2 wire to cyl 3 and vice versa.

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k6ng6r00
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PostPosted: Sat Jun 02, 2012 10:40 pm    Post subject:   Reply with quote

ScottMPala wrote:
i bought a set of spark plug wires that had an arc from a brand new wires. I was able to see the wire sticking out from under the boot. try switching wires around to see if the miss moves to another cylinder, ie move the cyl 2 wire to cyl 3 and vice versa.

But if he had the misfire in cyl 2 before and after he did the wires and landed 2 bad wires in a row on cyl 2 he should be playing the lottery...

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2011 Kizashi
2004 3400 - CAI, zzp 2.5in dp, 06 ss 2.5in catback, overkill pcm, SSC springs on AGX struts, GMPP Handling Kit, Kenwood/Focal/Infinity/Polk Sound System
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ScottMPala
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PostPosted: Sat Jun 02, 2012 10:47 pm    Post subject:   Reply with quote

k6ng6r00 wrote:
ScottMPala wrote:
i bought a set of spark plug wires that had an arc from a brand new wires. I was able to see the wire sticking out from under the boot. try switching wires around to see if the miss moves to another cylinder, ie move the cyl 2 wire to cyl 3 and vice versa.

But if he had the misfire in cyl 2 before and after he did the wires and landed 2 bad wires in a row on cyl 2 he should be playing the lottery...


Lol, yup. Sorry, didn't read the whole post. The coils plug into an ignition control module that can also go bad. If it's still missing after that your problem is definately not tune up related.

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2007SSImpala
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PostPosted: Sun Jun 03, 2012 4:52 pm    Post subject:   Reply with quote

Yep, the ignition control module could have taken a crap on you. I would do a cylinder leak down test just to confirm no mechanical issues exist. ie stuck or leaking valve. Also check your compression (dry then wet) on all cylinders. No cylinder reading should be less than 100psi. The lowest reading should not be less than 70 percent of the highest reading.

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