Fuel pressure test complete.

10 PSI Key on not running
50 PSI After start and running at idle
10 PSI Turned car off and within 30 seconds

Thanks

Brad

Fuel pressure test complete.

10 PSI Key on not running
50 PSI After start and running at idle
10 PSI Turned car off and within 30 seconds

Car is sitting at nearly 139K miles.

Just replaced the alternator and as I have seen here before both the alternator and fuel pump could fail at about the same mileage.

Thanks

Brad

What did you do to / for your E53 today??
 

Fuel pump lifespan is hours not distance but one of ours failed at about 130,000 miles the other lasted over 180,000 and was replaced before failure.

The FPR o-ring failed on wife's car at 185,000 or so leading to the drop of pressure when off as the easy to measure metric. 50 psi was 40 in seconds and 10 psi in a couple hours. (And zero overnight)

After replacing FPR it held 25 psi for 16 hours.

The o-ring seals between the high pressure side and return line of FPR.

I kept the old FPR so I can test when I replace my FPR/filter as I'm quite sure just the o-ring failed (typical BMW M.O.)

Thanks for the reply.

If the FPR is failing what is the next step?

Brad

You are describing the near identical steps I've just gone though.

It's a pain to remove the underbelly protection but once that is off it's easy.

https://uploads.tapatalk-cdn.com/202...b66a0fa740.jpg

This o-ring failed. You could probably just replace or even wrap with Teflon tape and it would fix the problem.

The FPR is a combination unit with the fuel filter but does come off so you could likely just repair it.

EODguy, what do you use to polish your windshield?

What did you do to / for your E53 today??
 

Not to jump in the middle of your convo with EOD, but I use the same ceramic coating I use on the body, on the glass [emoji106].

It works WAY better than products like RainX and last WAY longer between applications. Only thing I do “differently” is that I feel like I “buff” the glass a bit more than I do the body.

Don’t know that product matters per say, I’ve used Nugenix, Chemical Guy, “auto zone” products, you name it and they were all better than glass specific coatings.


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I use Nu-glass polish and then rainx although one of the other guys a ceramic stovetop polish.

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Glass stove top ceramic polish was what actually got me to using the ceramic coat on my glass as well [emoji106]. It works a treat! And is as “durable” as on the body though heavy use of the wipers does reduce that some.


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