Help with Misfire
Thread Starter
Joined: Mar 2002
Posts: 195
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From: California, Monterey Park
Help with Misfire My camaro was driving fine before I changed all my plugs and when I took a test drive the car bogs and #7 cyl is showing misfire on my EFILive. I thought it might be the wires and/or coil so I swap both coil and wire with #1 and went for another test drive and #7 still shows misfire. Is there anything I've missed? Could it be the injectors? or a faulty plug??? anyone experience this before? Any help would be greatly appricated. Thanks!
oh i'm using NGK TR55 for plugs
oh i'm using NGK TR55 for plugs
Thread Starter
Joined: Mar 2002
Posts: 195
Likes: 0
From: California, Monterey Park
Yeah. I'll go buy another plug tomorrow. Does bad plug happen often? I never heard of a bad new plug before. Weird. I'll post the result of my findings tomorrow. Thanks for your response.
Not too often but I've heard of it before. All it takes is a small imperfection in the ceramic and it can make it short to the block. Could even be from installation error if you smacked it against something or overtightened it by accident.
Thread Starter
Joined: Mar 2002
Posts: 195
Likes: 0
From: California, Monterey Park
alright.. it's the update...
I went to Kragen and bought another (1) NGK TR55 and replaced it. The car purrs smooth and seem like everything runs perfectly. No hessitation or anything. I just have to double check everything with my EFI Live. I'm so pissed that one "NEW" spark plug was faulty. Anyone know how to check the sparkplug before installing to make sure it's good. Cant trust new sparkplugs anymore. I'm sure it's not installation error because #7 is by no means hard to get to and I can do that one spark plug in 5 mins... anyways thanks SPARKY for the suggestion... You guessed the problem on the first try.
I went to Kragen and bought another (1) NGK TR55 and replaced it. The car purrs smooth and seem like everything runs perfectly. No hessitation or anything. I just have to double check everything with my EFI Live. I'm so pissed that one "NEW" spark plug was faulty. Anyone know how to check the sparkplug before installing to make sure it's good. Cant trust new sparkplugs anymore. I'm sure it's not installation error because #7 is by no means hard to get to and I can do that one spark plug in 5 mins... anyways thanks SPARKY for the suggestion... You guessed the problem on the first try.
Unless you can visibly see a crack there is no way to check it ahead of time. Here later with the quality control issues we have been seeing at our shop it is not uncommon to have a brand new part be a piece of crap.
