Complicated problem!
PREMIUM SPONSOR
Joined: Sep 2003
Posts: 2,630
Likes: 217
From: North East Ohio
Regular gauge will bounce like mad with the OBS fuel pump.
Just use a tire pressure gauge like mentioned, should get you in the ballpark anyway.
However, the mechanical pump usually has a hard time down low in the rpm (like idle) to keep good fuel flowing, yet will flow well in higher rpm's since it's rpm driven.
There are excpetions, however, and it's still good to know what fuel pressure is.
Just use a tire pressure gauge like mentioned, should get you in the ballpark anyway.
However, the mechanical pump usually has a hard time down low in the rpm (like idle) to keep good fuel flowing, yet will flow well in higher rpm's since it's rpm driven.
There are excpetions, however, and it's still good to know what fuel pressure is.
__________________
'96 7.3 F-350 Reg Cab 4x4 - bought new.
'04 6.0 E-350 custom 4x4
'08 6.4 F-550 Reg Cab 6 spd 4x4
'17 6.7 F-250 KR ccsb 4x4
'96 7.3 F-350 Reg Cab 4x4 - bought new.
'04 6.0 E-350 custom 4x4
'08 6.4 F-550 Reg Cab 6 spd 4x4
'17 6.7 F-250 KR ccsb 4x4
Hotshot
Joined: Oct 2003
Posts: 17,799
Likes: 104
From: Ashland City, TN
There has been some debates on what it does.
I've read many a posts on FTE here where people cleaned the tube and their problems went away, or swapped it cause it had a crack and it ran better.
Thats just a WAG anyways.
I'd start with the fuel and CPS like others suggested.
Thread Starter
|
Cargo Master
Joined: Jun 2010
Posts: 2,771
Likes: 3
From: Louisiana
Well I hate unfinished threads so let me go ahead and say this one is finished! He found the problem. Turns out it was a faulty map sensor. He got one out of a wrecked truck for free and thought he'd give it a shot. Show nuff, this thing will run! Smoke cleared up, egt's went down, & even out ran a friends sd with 100 hp tune from bts. The owner is super stroked about it. And thanks you guys!
Posting Guru
Joined: Dec 2009
Posts: 2,265
Likes: 2
From: Garden City, KS
A Dog? Hmmm... might have to try that on this '97. I found a really bad boost leak on the exhaust side (up pipe literally fell outta the collector), but it could be other things. Made no more than 10lbs of boost so I'm thinking the up pipe was the issue. Either way, it couldn't carry itself up a hill at the speed limit. We'll see I guess...
Thread
Thread Starter
Forum
Replies
Last Post
Mike8623
1994.5 - 1997 7.3L Power Stroke Diesel
16
Mar 24, 2017 11:50 AM
james_e_j2
6.0L Power Stroke Diesel
12
Aug 4, 2014 01:00 PM
Diesel_Dirk
1994.5 - 1997 7.3L Power Stroke Diesel
7
Apr 2, 2009 09:23 PM
Tenn01PSD350
1999 - 2003 7.3L Power Stroke Diesel
22
Jan 19, 2008 02:30 AM
