2nd Gen Non-Engine/Transmission Lift Pump Relocation

[SDR]

I am going to relocate the lift pump onto the frame rail on my 2000 Dodge Diesel, my question is when I cut the copper line that feeds the present lift pump; am I going to get an automatic siphon of diesel fuel from the cut line?



If the siphon action would be a problem and a mess, I was thinking that I could remove the fuel cap and purge the line with a small amount of air inserted up near the present lift pump!



Your thoughts!



Shelly

 

[DavidC]

Yes it will siphon. Your best bet is to undo the line at the pump and blow the fuel into the tank as you described. That is the way I did mine when I installed the in line strainer. May be a good idea to also install a shutoff valve in line for future pump changes (especially if your on the side of the road).



Dave

 

[Tom W]

I agree that you can blow the fuel back into the tank. Is easiest if you wait until you are low on fuel. The shut off is a good idea, I wish I had thought of that.

 

[SDR]

The thought of a shut off valve crossed my mind as they talk of a prefilter before the pump. NAPA says don't need a pre filter, but then I do pump some fuel from my own tanks and never know when a spider or bug could be dumb enough to crawl into the tank. Critters would always be caught at the main filter, but a prefilter sounds like a good idea. I have been putting the relocation off for the past 7 months due to health problems and now I need to get my rear in gear and get it done. Thank you DavidC and Tom W for your information... ...

 

[WestTN]

There is a pre-filter in the tank on the pickup.

 

[ILIANBG]

Yes, WestTN, there is, mine was totally clogged. I dropped the tank to install the Draw Straw, as I had fuel readings going to 0 psi sometimes, on a new OEM Carter pump relocated by the tank. I'm sure glad I saw it. I could not clean it so I eliminated the screens on the pick up inside the tank.

Ilian

 

[THenningsen]

what kind of cutoff is best to use? A brass ball valve? What size? That is a good idea.

 

[DavidC]

what kind of cutoff is best to use? A brass ball valve? What size? That is a good idea.

Check here, I would stay 1/2" and reduce as necessary.

http://www.enginegearonline.com/vaandma.html





Dave

 

[Big A]

If you're going to relocate the lp, I would also recommend spend the money, and look at the Glacier pump kit.

Big A

 

[NoSeeUm]

A shut off on the other end nearer the VP44 is not a bad idea either if you are doing the job. Stops the fuel from draining out of the VP44 if you have to work on fuel line components later on.



Jim

 

[THenningsen]

I am going with the kit from genos so does that mean that i would use a 3/8th fitting? Does anyone have any pics of their setup or a parts list? Is it best to use a cutoff before and one after? I assume a barbed fitting would go on either end on the cutoff and you would attach the hose to it?

 

[DavidC]

I am going with the kit from genos so does that mean that i would use a 3/8th fitting? Does anyone have any pics of their setup or a parts list? Is it best to use a cutoff before and one after? I assume a barbed fitting would go on either end on the cutoff and you would attach the hose to it?

In your case, yes on the 3/8 fittings. Vulcan has a lot of fittings on the site if you can not find what you need in your area. As Jim (NoSeeUm) stated a shutoff on the other side is not a bad idea. There has been quite different views on teflon tape here and I have always used #2 permatex with no leaks on fuel systems. If you put a shutoff valve on the VP side of the line you may get a hiccup after startup as you probably will not need to bleed the system as the lines on both side of the shutoff valves will still have fuel.



http://www.vulcanperformance.com/servlet/the-5)-Fittings-dsh-Components/Categories



Dave

 

[NoSeeUm]

I have had good luck using teflon. I like it because it is easy to remove from the threads in dis-assembly. But, just like Permatex you have to take care applying it. I always leave the inner most thread bare so to prevent loose material from coming loose.



Jim