Question about 1999 Chevrolet Blazer
Hi I have a 1999 Blazer,Four door,Four wheel drive.When I excellerate to enter a Highway,the engine light comes on,when I brought it to my mechanic he scopes it and told me, cylinder #3 miss fired.The vehicle is sluggish at this piont and I beleive I`m only running on five cylinders.My mechanic beleives the feul pump is the cause,but I have my doughts that it would be the fuel pump because I beleive it would shut down all the cylinders not just one of them.I just had my fuel injectors cleaned about 5 months ago.I had a tune up about a year ago.I was wondering if it could be a spark plug problem causing the miss fire.After a couple days the engine light goes out and the vehicle seems to have more power again.I hope somebody can help me with this problem.Thanks in advance
I would also check the #3 plug as well, maybe by replacing it with an old plug for a few trips to see if the problem is gone.
I don't know what kind of plugs you use but I stopped using Champion plugs years ago after buying four and having two of them with cracked insulators and doing pretty much what you describe. It was at first only bad mornings when one or both would misfire until the engine warmed them a little and cooked the overngiht moisture out of them. I didn't replace the wiring first though, since the problem only came up after doing the 'right' thing, replacing plugs that had 30-40,000 on them.
Posted on Sep 21, 2008
It MAY be your plug wires. But i would think your mechanic should have checked that already.
Posted on Sep 21, 2008
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Posted on Jan 02, 2017
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