TwinTurbo.NET: Nissan 300ZX forum - 1990 TT Ignition Issue
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Subject 1990 TT Ignition Issue
     
Posted by delmo on March 24, 2018 at 6:05 PM
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Message I purchased a 1990 TT yeaterday. Pretty decent looking car but it has some mechanical issues. Cylinder 5 isn’t firing. Compression on all cylinders was good. I figure it has to be something with the ignition. When it first started acting up the number 5 injector was swapped out with another and it stopped briefly but now it’s back. I put all new spark plugs in with no change. Ohmed out the coils and they were all good. Swapped the number 5 coil with another cylinder and no change. Checked the coil pigtail and it is getting 12V with the key on and 14V while running.

When I pulled the spark plugs they were all white-ish except the number 5 one.

Any ideas for what else I can check? Thanks in advance.

.

1990 300ZX TT, JWT ecu, Nismo 740s, HKS 2530s

     
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