I have a 90 300zxTT and it is running rough. Number 2 and 4 cylinders are not firing? No codes given. It is not the coils or the cam angle sensor. What can it be? Thanks for any help.
Bob
I have a 90 300zxTT and it is running rough. Number 2 and 4 cylinders are not firing? No codes given. It is not the coils or the cam angle sensor. What can it be? Thanks for any help.
Bob
Check the wiring connections going to your PTU. If you have good connections (sometimes they can slip out) and no wires are damaged or frayed then suspect a faulty PTU. If all is fine there, then OHM your injectors.
Could be the PTU but it could also be the injectors. Check for spark first. If you have spark on 2 and 4 then fuel is the next place to check.
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