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Old 10-11-2019, 01:40 PM
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andrewwynn andrewwynn is offline
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Location: Racine, WI
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Fuel pump can fail at any time. You can have some warning as the pump can be weak before failure and not provide enough extra pressure to run the siphon jet.

The normal lifespan is 5000 hours with E10 gas maybe it's 5-6000 I forget, but that usually means 130-180.000 miles.

I would not necessarily replace but buy and have on hand pierburg or Bosch pump (just the pump not the whole unit) for when it fails.

Usually the pump ultimately fails at start (attempt). It will eventually wear the brushes to nubs and at one point it will land at a bad spot on the commutator and won't turn.

You can likely get it to start with a firm tap on the top of the tank (to get home without a tow).
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2011 E70 • N55 (me)
2012 E70 • N63 (wife)
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