Still cannot figure out this fuel system problem.

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Dec 14, 2004 | 11:25 PM

#16

thechad

Junior User

Joined: Jul 2004

Posts: 68

Likes: 0

From: Ione, CA

I found on my 89 that my lift pump was leaking backwards into my tank so that the longer it sat the harder it was to start. (overnight was not bad but more than that was a itch to start). replaced that after I did all the caps and rings and return lines (which needed it desperatly anyway). hope it helps

Dec 15, 2004 | 12:06 AM

#17

PLC7.3

Post Fiend

Joined: Nov 2004

Posts: 5,638

Likes: 1

From: Manitoba

I would suggest it highly unlikely the valve is the problem as it is below the tank level thus stays full. You stated you replaced the orings.......did you do the return lines and caps too with a kit. Check the connection at the steel line to filter head from the lift pump see if the seal under the nut is in good shape and tight, do the same at the filter head steel line to IP inlet. The seals can be obtained at diesel repair shops need (1) 3/8id and (2) 5/16id.There are numerous air leak points you will have to search out the source.....

check out filter leaks........... cut and paste this in explorer if it doesn't open.

http://www.intellidog.com/dieselmann/idi2.htm

Dec 15, 2004 | 07:26 AM

#18

Raceallday

Thread Starter

Junior User

Joined: Apr 2004

Posts: 69

Likes: 0

Finally! I think the problem is solved!!!

Its been fairly cold here for the past couple of days. It was around 40 degrees yesterday afternoon when I went to cut firewood. It cranked up with little issue, and this is was with bad glow plugs. It wouldn't even crank in warm weather before without lots of spinning on the starter, jumper cables, and ether.

This morning, the tempurature was in the low 20s. I plugged the block heater in for about an hour. It fired up with no problem.

This is the first time I've ever replaced a fuel filter on anything that solved a problem.

Thanks for all the help everyone!!!

Dec 15, 2004 | 01:29 PM

#19

Ironpants

Senior User

Joined: Mar 2003

Posts: 235

Likes: 1

I find that after I added the battery warmers to my primary truck, I don't have issues anymore. But then it has only been done to -20 C around here.

Mar 7, 2005 | 06:50 PM

#20

MrValentine

5th Wheeling

Joined: Apr 2004

Posts: 32

Likes: 3

This is another tread I need to say thanks for.

I changed out my o-rings (kept the caps) and changed the connecting hoses and instant change in my truck starting. It was a night and day difference.

For people about to do this I don't recommend getting the $65 kit from napa (unless you need new caps). Just pull a o-ring off and take it, and a cap with you to a autoparts store. Get like 20 o-rings and 6 feet of hose to fit the cap.

Thanks again for this thread.

Mar 8, 2005 | 06:43 AM

#21

bilder12

Posting Guru

Joined: Sep 2002

Posts: 1,897

Likes: 0

From: Northeastern Pa - USA

I am not sure of this statement but here it goes .... some of the o rings and hoses are not diesel fuel proof, they tend to dry out quicker than the one s that come in the injection repair kit. Just be careful which products you are buying so you dont run into the problem sooner than expected. Today's diesel fuel is lacking sulfur for lubricating internal injection parts too, so be sure to keep up your additives ... stanadyne, lubricity, howes, etc. Read the labels for providing internal lubrication of injection pumps. The government and do-gooders have once again helped us out. Take pride in your rides and drive safe. bill --- out