Gold Lifetime Member
Join Date: Dec 2005
Location: Near San Antonio, Texas
Re: When engine is hot, car will not start
I too have sort of the same problem and although I've 'fixed it' to some extent, it still persists. Most of the things listed to check don't apply to my car. I have a '68 with a crate motor and lots of mods.
Others have suggested timing, but I have the timing set where both the engine likes it and the builder (World) suggested. The car starts fine cold, in fact, you just have to reach in through the door and turn the key. Mine (and I'm assuming czaj1992z28camaro ) cranks fine when hot, so I fail to see how timing is an issue.
In fact, the car will usually start right up after getting hot and you turn it off then immediately start it back up. But if you wait about 5 minutes, it does not like to restart. What I did to work around the issue is hold the gas pedal to the floor when trying to restart. This improves air flow as I think what is happening is fuel is getting hot in either the carb or lines (or both) when its sitting. I don't understand why hot gas does not like to ignite...
I've tried to see if the gas is leaking out of the carb when it sits but can't figure out an easy way to test.
I also put a heat sink plate under the carb made of wood and it seems to help.
'68 RS Camaro, 454 SBC
'69 Camaro, body only