so basically my car is running real rich it has some timing issues nothing to major the car will start fine when its cold... ill turn it off and then try to start it again it wont fire. ill floor it and then it fires and barley runs REMEMBER it starts fine when cold, do u guys have any idea what to do?

 

I having a similar problem with mine. Just yesterday i was able to hook it to a scanner. The coolant temp sensor told the ECM that it was 248 degrees. The car had only been on for about 2mins. The gauge in the dash read 100-120 degrees. If you car's temp is above 235 (or if the ECM thinks its over that) the ECM will richen the car up. I'd look at a scanner to verify this. I'm changing my coolant temp sensor ($18) tomorrow and hopefully getting it back on the scanner friday to see if this fixed the problem. Send me a message and i'll let you know how it goes when its off the scanner.

 

im pretty sure my car dosent have a ecm its a 1988 with a rebuilt old 305 v8 with a carb so im pretty sure that wont do it for me

 

i was thinking vapour lock but this problem only happens after i shut off the engine, it runs fine on the cold fire. but like i said after i shut it off it wont start, then could it be vapour lock still since the problem isnt when its running and warm only when its off and warm?

 

Damn that would have been easy. Sry, good luck to you.

 

bump

 

We need more details, such as carb type, fuel system modifications, air cleaner being used, etc.