Vacuum instead of boost?
Thread Starter
|
Posting Guru
Joined: Sep 2009
Posts: 1,441
Likes: 5
Vacuum instead of boost?
Hey guys, I'm trying to get a boost gauge to work and it does but the line from a tapped elbow is drawing a vacuum instead of pushing boost. Whats going on?
What RPM do you guys see boost start to read?
What RPM do you guys see boost start to read?
Thread Starter
|
Posting Guru
Joined: Sep 2009
Posts: 1,441
Likes: 5
I've got it tapped into the elbow right at the MAF heading into the intake manifold where others have tapped their hoses into so I think that's right.
FTE Leadership Emeritus
Joined: Aug 2007
Posts: 42,085
Likes: 6
From: Lakewood, Ca.
Most folks with a mechanical boost gauge install them on the intake elbow.
Last edited by SteveBricks; Nov 16, 2010 at 02:06 PM.
Senior User
Joined: Dec 2009
Posts: 206
Likes: 0
if you put a gauge connection on the inlet side of the turbo (between air cleaner and turbo) you will not be showing "boost". In order to see boost, you have to be after the pressurized side of the turbo someplace.
Trending Topics
Thread Starter
|
Posting Guru
Joined: Sep 2009
Posts: 1,441
Likes: 5
OK sorry guys, I put the hose to my tongue and I am getting boost but it's very little even at 2000rpms.
How many lbs should I be getting at idle and up?
How many lbs should I be getting at idle and up?
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
Thread Starter
|
Posting Guru
Joined: Sep 2009
Posts: 1,441
Likes: 5
I just took it for a drive and did the VGT relearn and the most I would see was 3-4 and that was going up a hill, it's ******* compared to how it was. Aside from the CAC silicon coupler things what else could cause this? I still hear the turbo whine but just not getting any boost. Is there a smoke test to find leaks?
Thread
Thread Starter
Forum
Replies
Last Post
1972RedNeck
1973 - 1979 F-100 & Larger F-Series Trucks
20
Dec 25, 2013 07:57 PM
JHoffman93
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
6
Jan 16, 2010 09:23 PM
John7894
1999 - 2003 7.3L Power Stroke Diesel
8
Oct 4, 2006 09:18 PM