Join Date: Jul 2005
Location: Quebexico, Canada
Ferrari Life Posts: 1,964
Vapor lock is an easy problem to solve...
Cause: The engine overheats, causing the fuel line, fuel pump and carburetor to heat up.
Result: Excess vaporization of fuel in the carburetor and/or actual vapor lock in the fuel line or fuel pump.
Solution: Wrap the fuel lines on both sides of the pump with aluminum foil tape and depending on the pump style you have, you can also wrap the pump.
This is a precaution if your car is prone to vapor lock. This will not work to help fix it when it's happened; this is for the next times it wants to happen.
Hold the throttle open just a bit with the accelerator pedal while you crank. Don't move the throttle at all while cranking, or the accelerator pump with flood the carburetor. The reason for cracking the throttle open it to avoid using the idle jet alone, as this runs the car richer than the main jet, and a rich-hot mixture makes the car flood easily.
When the engine catches, hold the throttle still until it clears the excess fuel and it will rev a little higher, so no worries.
Came back to edit: Almost forgot, if you have problems starting in hills, check the choke flap operation for sticking & float level, might be a good time for a carb cleaning.
My .02 cents
1990 348 TS (87284)
“I build cars for young men that only old men can afford” - Enzo Ferrari
Last edited by Magnum6464; 09-27-2009 at 02:06 PM.