Jet pump / transfer pump troubleshooting

[workingonit]

Originally Posted by g300d

T...
One thing I think can cross off that list is the FPR and filter. Had a long crank problem and after putting on a check valve to no effect, put in a new OE fuel filter/FPR assy and replaced the rotted FPR hose. That cured the long crank to start problem....

Interesting. My '01 X (M54) started to stumble, but not stall, on sharp turns, after I replaced the dead fuel pump last fall. Even with a full tank, and 50psi on a gauge.

I was going to replace the fuel filter/FPR assy and the FPR hose, as well as try a cheapo Amazon pump (just to see if the new Hella pump is the culprit), but I've been having health problems that keep me from going under the X. I think I might be able in a week or so.

My X never had a start problem, before or after the Hella pump install, nor the stumble. The old pump was OEM, as is the filter (both at 212k miles), and it ran great until it died while being inspected. The left side sender hasn't been touched.

So, I'm wondering if our similar fuel delivery problems might be solved the same way. Following....



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