Thread: AWR-fix: e53 Fuel pump / siphon pump details
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Old 10-02-2018, 07:05 PM
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andrewwynn andrewwynn is offline
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The gauges only read to full minus ten liters. (The floats hit the top of the tank).

If it says phase one as your surmise, car is getting realistic values from the floats. If you are getting intermittent drops in value sounds like a bad connection somewhere.

Two things most likely cause of fuel starvation at 1/4 tank: leak on the siphon jet or a weak fuel pump. It's tedious so get measurements of the fuel pressure but I just crack the left sender open and turn the key to determine if the siphon jet is leaking


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