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Guest
Posts: n/a
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I have a base model 2008 mini cooper r56 hardtop, I have great fuel pressure during idle and throttle up and down, the pressure drops maybe 8psi overnight, problem seems to be fuel pump doesnt prime before starting, checked electrical connections, fuses, etc. I have to throttle it when starting to get it started, once it is running it runs great and will idle after startup, but always have to throttle it on start up to get it running, starts and immediately dies if not, why is the pump not priming? please help.
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Moderator
Join Date: Jul 2012
Location: New England
Posts: 3,189
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Have you monitored pressure when cranking? It may be a worn pump, that takes a moment to build pressure. Instead of starting it right away. Cycle the key a few times while monitoring fuel pressure, does the pressure build to spec? Does it start normally? If so, the pump is weak.
- Nick |
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