Mechanics

CHEVY STARTING PROBLEM

1999 Chevrolet Blazer • 6 cylinder 4WD Automatic • 160,000 miles

I have a 1999 chevy s10 blazer with about 160,000miles on it. Its been having starting problems for a while now. Somedays it will start and somedays it wont. Now its like this on any kind of weather day. I changed the distributor cap and rotor and spark plugs and it made no difference. I changed the fuel pump because sometimes I didnt hear it running and it would start right up. Now its back to the same problem again. Can you help?
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Beat kid
April 11, 2011.




Next time it refuses to start don't wait for it to make up its mind-do below immediately to determine if its fuel or spark problem

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 away from ground-have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, Do you hear the fuel pump come On when you turn key on? If not check fuel pump fuse and fuel pump relay if okay-check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, coil's resistances, cap and rotor, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it and keep testing

Tiny
Rasmataz
Apr 11, 2011.
Ok I found the problem! My blazer went through several distributor caps and rotors so far because they keep corroding. Since it wasnt starting I put a heat gun to the cap and electrical wires and it started right up. My dad had to do this once before. Now I understand that moisture is somehow getting in there and blocking the spark from igniting anything but what could be the problem?
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Tiny
Beat kid
Apr 12, 2011.

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