Thread: Low engine vacuum but no vacuum leaks.

Tweet

Possible:
Harmonic balancer ring slip.
Engine not degreed upon assembly
Vapor lock( you sure? Pop the hood about three minutes after shut down, LOOK down the carb bor, see if fuel is dripping down)

What size are the battery cables and are the grounds clean and tight? If it fires right up after it cools off it can be a number of things including a bad starter and/or solenoid. and as mentioned it could be a fuel issue, but I would check the grounds first and where is the battery located?

Originally Posted by NTFDAY

What size are the battery cables and are the grounds clean and tight? If it fires right up after it cools off it can be a number of things including a bad starter and/or solenoid. and as mentioned it could be a fuel issue, but I would check the grounds first and where is the battery located?

Battery is in the trunk and cables and terminals are new and clean. This is not a fuel issue. As I mentioned, the vacuum is very low as if there was a leak...but there is no vacuum leak. Thanks

Originally Posted by firebird77clone

Possible:
Harmonic balancer ring slip.
Engine not degreed upon assembly
Vapor lock( you sure? Pop the hood about three minutes after shut down, LOOK down the carb bor, see if fuel is dripping down)

Thanks for the reply. I already ruled out a harmonic balancer ring slip. Found tdc with a piston stop and made a new mark on the balancer. Installed a 1" wood carb spacer, , heat shielded the starter and solenoid, fuel pump and fuel line, installed new spark plugs/wires, new distributor rotor,coil and cap. Idle timing is set at 30* and it won't decrease without stalling.