Vacuum Advance problems

Reply Subscribe

Thread Tools

Search this Thread

Mar 11, 2011 | 01:49 PM

Jnissen04

Thread Starter

Freshman User

Joined: Feb 2011

Posts: 48

Likes: 0

Vacuum Advance problems

So yesterday I replaced my vacuum advance on my 71 F100 390 since the old one no longer was working. After finally getting the retaining clip back on, I pulled the plug off the carb. and replace the vacuum line. When I started the truck, the idle was off, and I could hear air blowing/sucking from the engine. I checked and the *** behind the vacuum line on the carb is sucking air, which it did not before. Any ideas as to why and what I need to do to fix it?

Thanks,
James

Mar 12, 2011 | 12:16 AM

dasdok

New User

Joined: Mar 2011

Posts: 3

Likes: 0

the clip might be broken and you can't see it? all so look for bad hose or crack in it? hope it helps william

Mar 13, 2011 | 07:01 PM

Jnissen04

Thread Starter

Freshman User

Joined: Feb 2011

Posts: 48

Likes: 0

Well, I now feel like an idiot.... The vacuum leak from the carb is from the power booster port. I dont know how it was plugged before, or at all, but I dont have power brakes, so i must have lost the plug for it. Thanks for the help!