PeachParts Mercedes-Benz Forum - View Single Post

New2MB · #10 11-13-2010, 05:57 PM

Thanks for the help, I haven't had to deal much with IP's other than replacing them so I'm coming up to speed slowly.

I spent 3 batteries worth of cranking getting fuel through the IP so I think I did enough cranking.

I'll try swapping lift pumps although I don't recall the old IP squirting fuel out either, a similar flowing as to what I am getting now.

The more I think about this though it seems that a lack of fuel would not cause a lack of fuel pressure.

If the IP gets fuel, it will pressurize it.

If the IP gets insufficient fuel, shouldn't it still pressurize it and 'squirt' it out even if it's a small amount?

If the IP wasn't getting any fuel then it wouldn't be coming out of the DV's and I wouldn't have any coming back through the return line.

I need a separate jar for the return so I can see when and how much I'm getting.

I just found my fuel pressure gauge so I'll see if I can get it hooked up. Couldn't I just hook it in-line on the inlet line to the IP? Or even in-line just after the lift pump?