I have a 1991 K2500 4/4 Has no balls. Installed vacuum gauge on idle the vacuums fine when I am driving at speed (any) the vacuum is low (11PSI) Is this nornal or what could be my problem ?? I have a I have a 1991 K2500 4/4 Has no balls. Installed vacuum gauge on idle the vacuums fine when I am driving at speed (any) the vacuum is low (11PSI) Is this nornal or what could be my problem ?? I have a new trottle body, new distributor, and removed the cat. Thank you for any answers to help :

Need a faster answer?
put some gas in a spray bottle. spray throttle body and vacuum line if engine raises found leak
Was this answer helpful?
Yes
No
Thank you for your feedback!