Most frustrating car

[Muzza094]

Hey guys I have a 1990 300zx TT that no longer starts, it was running fine then a couple days ago I was driving and dropped a cylinder, drove straight home stopped the car now it won't start any more just cranks. I have checked the ecu for codes only got a 42 (fuel temp sensor) replaced the ptu, pulled out cas and spun it by hand everything worked, changed spark plugs, checked coil pack wiring (peanut that had the car was a genius with wiring) resoldered and heat shrunk all joins. Have fuel and spark why will my car not start anymore??

[nissanfreak12]

What are your injectors Ohm'ing at?

Fuel temp sensor not functioning will cause your car not to start in some scenarios.

[ThisIsSparTTa]

I doubt fuel temp sensor, although it has to do only with PRVR, which has to do with cranking.

Check for fuel pressure.

[Muzza094]

Thanks guys I'm not sure how to test the fuel temp sensor but I have cleaned the connection as it was green. I will check the injectors again tonight they all seem to squirt maybe a bit too much but I don't think that would stop the car starting?
Fuel pressure was 40psi when I tested it :/

[Muzza094]

Thanks for the help guys while testing the injectors i found that the plug on cyl 5 was loose plugged it back in and now the car starts, now the fun can start again

[ThisIsSparTTa]

Odd that you had a loose plug, guess that killed all your compression. Good find. Good luck with it.