Z06/misfire?

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Oct 6, 2011 | 08:40 AM

K-ROB 72

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Heel & Toe

Joined: Dec 2010

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Z06/misfire?

Ran some 100 octane fuel in my 02 Z06, (about 3/4 tank full). Car runs great, smooth response UNLESS I go full throttle. If I go full it has a miss, hesitation. I need to know if its an injector issue or did I foul a stock AC Delco spark plug? These plugs were replaced 500 miles ago, prior to the 100 octane fuel. Thanks in advance for response!!

Oct 6, 2011 | 10:06 AM

rebelheart

Safety Car

Joined: May 2008

Posts: 4,237

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From: Lacombe Louisiana

100 octane fuel in itself would not cause this problem.Maybe contaminated fuel? Water etc?

Oct 6, 2011 | 10:11 AM

87SAM

Safety Car

Joined: Jan 2001

Posts: 4,387

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From: Boise ID

I would first check the spark plug wire connections at the plugs and coil.

Oct 6, 2011 | 12:10 PM

cdkcorvette7

Tech Contributor

Joined: Aug 2008

Posts: 2,902

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From: Oak Hill Virginia

The next time it happens don't delete the code and have your auto parts store scan your car with an aftermarket code reader like actron. The onboard scanner on the C5 will not show the specific cylinder(s) that is missing but the aftermarket scanner will. P0301 for cylinder 1 P0302 for cylinder 2 etc. Most parts stores will do this for free...

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