Trouble starting when hot
Thread Starter
Instructor
Joined: Jul 2007
Posts: 150
Likes: 0
From: Lewisville Texas
Trouble starting when hot
I'm having a lot of trouble starting the car when hot. It just turns over and over but never catches. If I just let it set and cool off it fires right up without hesitation. Could this be a timing issue or something else?
Melting Slicks
Joined: Jan 2003
Posts: 2,713
Likes: 31
From: Shreveport LA
LA Events Coordinator
It's either timing OR carb float too high and it spilling over into the carb when it's hot OR the fuel is boiling out of the bowls. Had the same problem and it was the float was too high...adjusted and no mo' problems....
Good Luck!
Good Luck!
Thread Starter
Instructor
Joined: Jul 2007
Posts: 150
Likes: 0
From: Lewisville Texas
Maybe, but it's a new MSD ignition.
Some one told me to try either higher octane or octane booster. I already run 93 so he said to try adding some 100+ or booster and see if that helps. Opinions on this...
Racer
Joined: Mar 2006
Posts: 366
Likes: 1
From: Houston Texas
Assuming your 77 has a carb and not modified to fuel injection, just try opening the throttle between 1/3 and 1/2 way while you crank. Don't pump the throttle, or you'll flood the engine. Let your foot off as soon as it catches.
Thread Starter
Instructor
Joined: Jul 2007
Posts: 150
Likes: 0
From: Lewisville Texas
Last time I was pumping the throttle. That was when I wasn't sure it was getting fuel.
Melting Slicks
Joined: Mar 2006
Posts: 2,465
Likes: 0
From: Orange Park Fl
This will most likely work if the problem is heat soak, but it does not fix the problem. Check your hoses and your evap canister. If the evap system is not working properly, the fumes may go into the carb instead of the canister, making it too rich and hard to start. God bless, Sensei
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Melting Slicks
Joined: Sep 2007
Posts: 2,429
Likes: 0
From: Tucson AZ
Look at the fuel system. I had the same problem, fixed it. My fix may not work for you. Try looking at fuel lines getting too hot, is the fuel line too close to a heater hose? Is the line close to the exhaust manifold/header? Look at it close, and I really beleive you'll find your solution there, IMHO.
Le Mans Master
Joined: Jan 2006
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From: Butler Pa
Le Mans Master
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From: one night in Bangkok you are never lonely
Even if you listed to that person again don't tell anyone here that you did.
BTW Vapor lock 
