1985 6.9 Fuel problem
Thread Starter
|
Mountain Pass
Joined: Jan 2005
Posts: 120
Likes: 1
From: Carmel Valley
1985 6.9 Fuel problem
I have a no start 6.9 that I have replaced the fuel return lines, glow plugs and fuel filter.
I installed a short section of clear fuel line between the Eclectic lift pump and the filter housing to see if I was sucking any air into the line.
With the pump running there is no fuel in the clear line, when I drain the Schrader valve I get no air spitting out just a stream of fuel, then the clear tube fills up till I release the valve than the fuel drains out. I have no clue where to go from here, I am thinking of starting with a better Lift pump or a check valve? Any suggestions would be appreciated.
There is a video I uploaded of this at
Thanks
Craig
I installed a short section of clear fuel line between the Eclectic lift pump and the filter housing to see if I was sucking any air into the line.
With the pump running there is no fuel in the clear line, when I drain the Schrader valve I get no air spitting out just a stream of fuel, then the clear tube fills up till I release the valve than the fuel drains out. I have no clue where to go from here, I am thinking of starting with a better Lift pump or a check valve? Any suggestions would be appreciated.
There is a video I uploaded of this at
Thanks
Craig
Senior User
Joined: Jun 2013
Posts: 170
Likes: 4
Nice video. The fuel filter is probably the wrong one for your truck. The gasket/o-ring isn't getting enough crush to seal properly. The threaded portion of the filter is bottoming out on the filter housing. Remove the new filter and compare to your old one. The old filter should have a concave shape to it where the threads are. The new filter may be flat. You could install the old filter and retest with the clear tube. I use Motorcraft FD-811 or Wix 33811.
Posting Guru
Joined: May 2015
Posts: 2,036
Likes: 5
Also to op what electric fuel pump are you running? I has one of those cheap Mr gasket 12d's that are notorious for being junk and it wouldn't push enough to fuel my motors, I went back to the factory mechanical pump and had twice the power..
i ain't rite
Joined: Mar 2005
Posts: 65,595
Likes: 5,623
From: Marlboro Mental Hospital.
what they said^^^
the cheap electric pumps are useless for diesel and will self destruct within a few months. you need a dedicated diesel pump like the facet duralift.
best price i have found for the duralift is here: https://www.aircraftspruce.com/catal...statepump2.php
Cargo Master
Joined: Oct 2012
Posts: 3,072
Likes: 48
From: California
wow. that is a good price. I think I dropped $30 more than that the last time I got my latest duralift.
A long time ago, there was a guy (I think "Genlightning" or something like that) who used to sell duralifts for something like $75. Miss those days.
A long time ago, there was a guy (I think "Genlightning" or something like that) who used to sell duralifts for something like $75. Miss those days.
Trending Topics
i ain't rite
Joined: Mar 2005
Posts: 65,595
Likes: 5,623
From: Marlboro Mental Hospital.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 6 Best Deals Available on New Fords & Lincolns Right Now
Brett Foote
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Verdad Gallardo
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
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
Thread Starter
|
Mountain Pass
Joined: Jan 2005
Posts: 120
Likes: 1
From: Carmel Valley
Best Price I have seen, so ordered one this morning. I am also going to replace the wix with a Motorcraft filter.
I want to thank you all for your help and information.
Craig
I want to thank you all for your help and information.
Craig
Thread
Thread Starter
Forum
Replies
Last Post
menze46
1994.5 - 1997 7.3L Power Stroke Diesel
14
Oct 19, 2019 10:33 AM
Ramonmonlea
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
5
Jan 2, 2014 03:55 AM
DSMMH
6.0L Power Stroke Diesel
3
Sep 27, 2008 06:44 PM
Hamberger
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
2
Apr 19, 2007 10:09 AM