Re: Help 97 truck popping through the exhaust
Gotta be a sensor that triggers something related to the ignition process. Back in the day, popping through the exhaust was usually because the condensor of a points ignition system was going bad. With the ignition system we have, I don't think that there is anything in the ignition process that would relate to that being a problem.
Has the Check Engine light come on? I am assuming it hasn't, since you didn't mention it. How long has it been since the plugs were changed? Could there be a build-up on the electrodes that is staying hot enough to ignite a stray mist of fuel? Without a code having been set, it's gonna be hit or miss and parts changing. I'd seriously consider the plugs, unless they are new.
Nothing says it couldn't be a fuel injection issue, but (again) I think a code would have to be set to know for sure.
Good luck.
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'96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed.
'69 C-10 SWB; 350/TH400 - in limbo
The older I get, the better I was.
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