i have a 1978 280z i have restored it to working condition. it normally runs great, but it wont start in the cold. once it warms it it starts up first try. should i look at the cold start valve or the temperature sensor?

 

Welcome to ZDriver!

Yes yes... cold start valve is first on the list. Remove & clean. You can also flip it upside down on the fuel hose and test for spray.

If that doesn't fix the prob, check fuel pressure / fuel pressure regulator, spark plugs, wires, coil, etc. Make sure the plugs are gap'd to the correct spec.

 

hey, i checked for spray from my cold start valve and i got like a drop of fuel how do i clean it? or should i just replace it?

 

Brake cleaner, a scotch brite pad, and a needle.

 

i cleaned my cold start valve and went to check to make sure i was getting spray, but now im not getting fuel to the valve. i know i have fuel preasure at the fuel rail because it starts fine when its warm what should i check next?

 

Did you remove the valve from the rail / fuel hose to check for fuel?

 

i waited a bit then tried again and it started rtight up and i havent had a problem with that since thanks