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Re: fuel pump pressure? (archive)

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Posted by m.kotwick on September 07, 1999 at 02:34:31:

In Reply to: fuel pump pressure? posted by jonz on September 06, 1999 at 22:20:04:

Jon,

Original BMW repair manual states that if pump pressure is less than 0.05 atm (0.7 lb/in2)), the pump is defective. Just how pump output might be measured with such precision I could not say. I fitted a Purolater glass and metal fuel filter to my '74 equipped with a Weber 32/36 DGAV and a OEM Piersburg replacement fuel pump. The fuel filter always seemed to be no more than half full to my recollection. This supposedly premium - grade filter was also subject to failure in that the glass housing proved especially vulnerable to damage. While I exercised normal care during installation, the glass housing eventually developed a hairline crack which allowed air to be sucked into the line leading to the fuel pump. Not an upgrade I would recommend to anyone. Am now running the standard Purolater canister-style replacement. Good luck.

M. Kotwick

'74 '02 Malaga.



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