Question about 1998 Chevrolet Blazer
I would start with plugs and wires if they have never been changed, and clean the terminal post of the coils. but also check exhaust after you start the car in the mornings..if you see a large vapor cloud ( some vapor in the mornings is normal.. even a "little" water my come out, but after 5 minutes or so it should go away). If you have a small gasket leak water will creep in overnight into the cylinder and cause the spark plug to be fouled up and then when the pressure and heat increase the spark plugs will usually get blown clean. Now if that checks o.k. then i would go down to the local Autozone and purchase a can of Sea Foam $10 and pour 1/2 can into half tank of gas and drive the car around for 30 minutes and let that stuff cleanout the injectors. can i get some feedback, thanks!
Posted on Apr 27, 2010
Idea one: it is not fine above 3000 rpm's, you just cannot hear the miss anymore. The most likely (and cheapest) problem is worn out spark plugs. If you replace the plugs and it does not improve replace the plug wires. If that still does not help you need to do a compression test to isolate the problem and do some heavy work. You must do something. If you keep running it the way it is you will ruin the catalytic converter. Catalytic converters are big bucks so fix it now rather than later. Good luck
Posted on Apr 27, 2010
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Posted on Jan 02, 2017
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