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#1
01-05-2008, 05:13 PM
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Won't start wet
My 1999 Blazer (with 4.3L) won't star after a significant rain. It will crank, but not fire. I replaced the cap and rotor, thinking it would fix the problem. It didn't. Any suggestions? Thankyou in advance!
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#2
01-05-2008, 06:22 PM
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Re: Won't start wet
With one sparkplug wire disconnected & a known good sparkplug connected to it and grounded, have an assistant try to start the motor and see if the sparkplug makes a spark.
If it sparks then I'd suspect bad/grounded sparkplug wires. If there's no spark then I'd suspect a bad ignition coil and or bad/grounded sparkplug wires...all help gratefully accepted.
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#3
01-06-2008, 06:07 PM
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Re: Won't start wet
It starts and runs fine when it dries out. Once I actuallys ste a small space heater under the hood to speed it up, and it worked. Should I still try the coil and/or wires?
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#4
01-08-2008, 05:20 PM
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Re: Won't start wet
Yes, if the wires have any cracks and any road salt splashed on them, the wet salt conducts electricity and shorts it to the closest ground. Same goes for the ignition coil.
A remote possibility is the Crankshaft Position Sensor (CKP) wiring connection. The CKP is mounted just behind the harmonic balancer at the lower front of the motor...all help gratefully accepted.
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