TwinTurbo.NET: Nissan 300ZX forum - Re: Weak to no spark when car is hot!
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Subject Re: Weak to no spark when car is hot!
     
Posted by itlnstln13 on March 10, 2013 at 11:56 PM
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In Reply To Weak to no spark when car is hot! posted by JonnyZ(SoCal) on March 08, 2013 at 01:56 PM
     
Message Check all your grounds. Cleanup the ones at the back of the intake manifold. Make sure to gently split the two ground lugs on the passenger side rear intake manifold and use some emery cloth to cleanup in between the lugs.

Also look for the big one at the front left fender well screwed down into the frame rail near the air conditioning compressor... that one is very prone to corrosion due to sitting upfront and at a lower position prone to rainwater exposure. I moved that one to the teardrop shaped zinc coated suspension mount for a clean, solid connection. I also used antiseize paste which has metal particles in a grease base to coat everything and seal out moisture.

Car WOKE UP and RUNS LIKE NEW! Rough idle gone and STRONG. Make sure you also clean up the ground cable near the battery. I sprayed that with WD40 to penetrate and displace moisture as well as providing a anticorrosion coating.

Perhaps there is a ground somewhere that I have missed? Anyone else have advice on that? It went from running like CRAP and nearly stalling with dead pedal response after warming up to running like a CHAMP after doing this simple maintenance.

     
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