Thanks for all responses and info. It took me a few days to get to Harbor Freight for the pressure tester. I was going to rent one from AutoZone, but for $18 I figured it is a good diagnostics tool to have anyway.
Quote:
Originally Posted by Joshdub
Sounds likely. I'd check for fuel pressure at the fuel rail(s) first though.
|
I've checked the pressure at the schrader valve on the fuel rail, got 0 (zero) with key in position 1 or 2, and while cranking the engine. I've repeated the test a few times, always 0. Pinching the line does not change it. Initially, as I was attaching the test hose to the test valve, I saw a bit of fuel coming out. But then at the end, when I removed the test hose, I pressed the pin on the valve and there was no fuel coming out at all. Does this confirm a bad pump? Or could it be the pressure regulator inside the filter? Or anything else?
Quote:
Originally Posted by Deansbimmer
The pump primes for a second or two every start cycle. Sounds like you've found a dead pump, especially since there's voltage and no activity. You can get a new genuine BMW pump assembly for 270 if you look around.
|
There is definitely no sound (ever). I was just hoping that it could be the filter only... I already got the fuel filter about 6 months ago from TheBMWpartstore as I was planning some preventive maintenance. I believe that they have the best price for the fuel pump too (part# 16116768357 is $272.41). I get all my parts from there unless the local dealer matches the price. I've seen various auctions on eBay, but who knows how 'genuine' those are.
Quote:
Originally Posted by RFaber
If there is no whiring sound in the first two seconds after switching the key on, (just before the start position) then i strongly suspect a fuel pump, especially after all the other tests you performed. a fuel pump is loud enough to be heard from inside the cabin, with the rear seat lifted up. at least its an easy fix!
|
I agree that it is an easy fix and have no problems replacing it (I will replace the filter too), as I do most of repairs on the car. I was just hoping to avoid the $300 part cost
