Losing fuel pressure

[redneckaggie]

the problem with having a e pump and a lift pump is that if they are not ran on seperate lines one will have to force fuel through the other and since the stock pump is a positive displacement pump then if you try to force fuel through it then you will likely blow the seals and end up with a crankcase full of diesel. why would you want the lift pump to circulate diesel? It seems it would be easier to have one pump with two different tanks.

 

[Jbevs]

Redneckaggie is right. You don't want to force fuel through the lift pump. I am toying with the idea of running an e pump and the lift pump, with the e pump put on a seperate section of line that Y's off before the lift pump, then Y's back in after the lift pump. It's just an idea that I am thinking of doing later on this year.

 

[Jbevs]

Does anyone know of a way to test if the lift pump on my truck is shot or not. If it's shot, I really don't want to have to change the oil right now either. If there is no way to test it I think I will just put a new one on.

 

[redneckaggie]

really no way to test besides to hook to a source of fuel and see if it is pumping. I can say that changing the oil is a whole lot easier than installing one. If you are interested in another e pump check out a pro comp pump. I picked mine up off of ebay. way cheaper than a holley and it has been on the truck for at least 3 years

 

[Jbevs]

I defenitely like the price on that pro comp pump. Do you run any wmo through it?

 

[redneckaggie]

not a lot to speak of really I dump every oil change into the tanks and I use 2 stroke as a fuel conditioner. I have use that same pump(before I put it on the truck) to transfer wvo for a buddy of mine that makes biodiesel. It wasnt cold outside though