Thread: Low engine vacuum but no vacuum leaks.

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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.