holley 600 leaking fuel from manifold vacuum port

[skep419]

Any ideas?

 

[mderoy340]

not uncommon for some to be there. Make sure you are not pig rich at idle.

 

[mopowers]

I have a proform carb that deposits a little fuel under the manifold vacuum cap. As said, it's not uncommon. Just make sure it runs well.

 

[Hipo65]

My 750 mighty demon does the same dam thing! ( got a thread about it going in electric/ignition systems) It ruined the diaphragm in my vacuum advance! So ive sourced manifold vacuum for the new vacuum advance can from the intake manifold its self from a runner close to the plenum. So far no issues.