Quote:
Originally Posted by ainarssems
You can get new VDO pump same as original on aftermarket for around £120, no need to buy whole housing.
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Have that pump sitting on my desk.
Problem is, the long bolt that secures the siphon cup to the pump housing, just spins the captured nut way down in the tank where nobody can get at it.... Without destroying the pump housing in the process...
Thus my problem/question/possible solution thread.
And I tried a simple test to see if the pressure regulator was failed, or allowing too much fuel to just flow back to the tank? Easy as can be, two short sections of hose, slipped over the jaws of a needle nose pair of vice grips.. and clamped the return hose down, and after a few tests, completely shut. (So all the fuel, only could go to the fuel rail.)
No dice my friends. The pump is failing to move enough fuel to supply the injectors, even with the return line clamped shut, so it's not the fuel pressure regulator, filter, or injectors.
IT's the pump. (That I can't get to without cutting up the housing...)
What's left of the pump still works pretty good however, I drove about 450 miles yesterday, at 82mph, with the check engine light flashing, and the engine running like crap until I slowed down, shut of the engine and re-started it again, then it runs fine, smooth as can be around town....