Small vacuum leak.
Thread Starter
|
Trailering
Joined: Oct 2023
Posts: 22
Likes: 1
Small vacuum leak.
Hello. I have a 95 f150 5.0 4x4. Had my AC reacharged and noticed when on highway it would cut to defrost at 1600 rpm. I noticed the white vacuum line under hood was cracked. I cut it back put on and I replaced every single vacuum line under hood with silicone upgraded to 96 vacuum reservoir. Removed smog pump and all those lines are removed and capped at there solineds to prevent check engine light. It's alot better but does it under heavy load around 2100 rpm. Do I need to start looking at lines under the dash? Thank you
Thread Starter
|
Trailering
Joined: Oct 2023
Posts: 22
Likes: 1
Yea it holds a vacuum. This design doesn't incorporate the reservoir for HVAC system. It's just for EGR,smog and cat fresh air. (I might actually plumb it in to it).I removed and capped everything except EGR. No leak. Old coffee can was not looking healthy. I see two black lines go in hvac by passenger side firewall. Do brake bleeder vacuum pumps work for testing vacuum leak? I tested manifold and throttle body no leak.
Thread
Thread Starter
Forum
Replies
Last Post
GavinL
1987 - 1996 F150 & Larger F-Series Trucks
2
Jul 26, 2021 09:38 AM
oldcoupe42
1987 - 1996 F150 & Larger F-Series Trucks
15
Jul 22, 2017 03:41 PM
lifted77f250
1999 - 2003 7.3L Power Stroke Diesel
1
Feb 13, 2010 07:45 PM
