Cylinder 3 not working

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Jul 23, 2013 | 04:52 PM

atlhesi

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Cylinder 3 not working

Hello,

we have a Problem with a supercharged C5
A&A, 15psi, 705 WHP

After a dyno run cylinder 3 is not working ( manifold cold )

Compression OK , sparkplug and module OK, injector OK,

Reluctor wheel was not good fixed and position 10degree wrong .

But now after adjustment cylinder 3 is still not working,

Any ideas ?

regards

Heinz

Jul 23, 2013 | 06:05 PM

garygnu

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is the plug wet when you pull it ?did you test the plug wire ?is the wiring harness fully plugged in and undamaged ?

Jul 23, 2013 | 10:00 PM

DisasterpeaceWS6

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From: OK / Hawaii

Also check the wires going to your coil pack. I had a guy with a camaro have similar problem after dyno and his #7 coil had a wire frayed and was rubbing on metal. Fixed the wire up and afterwards there was no issue.

Jul 24, 2013 | 04:45 AM

joecar

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From: So.Cal.

Did you observe spark...?

Did you observe injector spraying...?

Jul 24, 2013 | 05:41 AM

atlhesi

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Yes, injector and sparkplug is spraying and firing.

We will check now the timing of cylinder 3 in relation with the
reluctor position.

But I can hardly imagine that just 1 cylinder has not the correct timing.

Maybe the ECU has a problem.

Jul 24, 2013 | 08:08 AM

64post

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From: Sonoma Co. Ca.

Quote:

Originally Posted by atlhesi

If it has spark fuel and compression all about the same time , it has to run. One of those is missing. Try a "noid" light on the injector connector and run it, some ecms have injector driver failure in run mode.