Xoutpost.com - 06 4.4i no fuel pressure

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- X5 (E53) Forum (https://xoutpost.com/bmw-sav-forums/x5-e53-forum/)

- - 06 4.4i no fuel pressure (https://xoutpost.com/bmw-sav-forums/x5-e53-forum/110211-06-4-4i-no-fuel-pressure.html)

lyngaaskhan

04-30-2019 06:24 PM

Huh. It goes up to maybe 90% of the total sweep and then no continuity. I'll dig around and see if I can find the specs for it. Either way it isn't reliable.

lyngaaskhan

04-30-2019 06:38 PM

Started right up, of course, and the gauge is showing 5.7l, which is about what I dumped in. I'll contact the seller and see what they will do. Thanks for the spot-on advice.

upallnight

04-30-2019 06:49 PM

Quote:

Originally Posted by lyngaaskhan (Post 1161253)

Died on the freeway on Sunday - sudden loss of power and engine stopped. Towed home. Cranks and tries to catch occasionally. Verified fuel pump running. Tested pressure at rail and got nothing. Pulled pressure gauge and pressed schrader valve needle and gas dribbled out.

Replaced fuel pump last August after identical symptoms.

https://xoutpost.com/bmw-sav-forums/...ple-hours.html

OBC test 6 shows 0.0 left, 27.0 right and 27.0 total.

Looking over the excellent post from Andrewwynn:
https://xoutpost.com/bmw-sav-forums/...stic-help.html

About to pull both tank covers and see if I have leaks in the siphon hoses. Anything else I should be looking for? I hope the Delphi pump I bough last year isn't failing already.

What did the fuel gauge on the dash say? Did the low fuel light come on?

lyngaaskhan

04-30-2019 07:13 PM

No light, gauge showed a little over a quarter tank. OBC showed 27l, clearly all wrong.

andrewwynn

04-30-2019 11:56 PM

06 4.4i no fuel pressure

Quote:

Originally Posted by lyngaaskhan (Post 1161258)

Of course I find that I have two 5 gal gas cans and of course both are full of regular lower octane gas....

My options are to use the 87 or so octane or go buy yet another 5 gal container and fill it with the correct gas.

I'd have put in one of the 87s then filled up after with 93. It averages out. On long trips I often mix 50/50 93 and 87 to get 90 at less price than the purposely 89 midngrade pointless fuel.

The x will run fine on 87. It will knock a little and the computer will dial down the performance until it stops you will never hear the knock but you will notice less passing power.

andrewwynn

04-30-2019 11:58 PM

Quote:

Originally Posted by lyngaaskhan (Post 1161268)

Started right up, of course, and the gauge is showing 5.7l, which is about what I dumped in. I'll contact the seller and see what they will do. Thanks for the spot-on advice.

What's the left vs right side?

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