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IPJ1978 IPJ1978 is offline
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Join Date: May 2010
Posts: 2
help needed with poorly 930

Hi all, i havee just bought my dream car a 86 930, but i did a very foolish thing and ran it out of fuel on the third day of haveing the car(fuel gauge very inacurate!!). the car ran fine before and pulled very strong. since running out of a fuel it has developed a running fault. the fault is a lack of power / hesitation when on boost this gets slowly worse as the engine warms up. i havee changed both the fuel filters, the one in the engine bay wasn't dirty but the one by the rear fuel pump was fairly dirty. i have changed the front fuel pump. i'm a mechanic by trade and have performed a fuel pressure check these are my results;

cold control pressue 2.2bar
warm control pressure 3.55bar
boost enrichment 2.7bar
system pressure 7.15bar

i'm finding hard to find any data on wether these figures are ok or not.
the car starts hot or cold fine. any help will be greatly recieved as i so want the car to perform as it did.....

wur part number 0438 140 054
fuel metering part number 0438 120 085

many thanks Ian
Old 05-27-2010, 02:31 PM
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