Take the motor apart and clean and lube the moving parts and it should work fine. Extend the vacuum line so you can test it before reinstalling...what do you have to lose?
Mike B
Mike Boteler
1956 Chevy 3100 Resto Rod 1952 Willys M38 Army Jeep 1983 Jeep CJ7 Laredo 1984 Jeep CJ7 +++++ Silver Spring, MD