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Excessive Cranking to start...fuel pressure regulator or pump?? 700 1989

posted by  raidman on  Sat Mar 10 18:02 CST 2012
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last visit: Fri Apr 4 22:17 CST 2014
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I just installed a new Airtex main fuel pump and an Airtex intank fuel pump, plus a new fuel filter. Most of the time she starts right up, but now after a long park (or overnight) it takes a lot of cranking to start up. Restarts right up after a quick turn off and restart.
I suspect that the new Airtex main pump does not have the anti-backup valve that the OEM Bosch pumps have. Is this correct? Or does the Fuel Pressure Regulator maintain the pressure in the lines for a quick startup??
I'll replace the FPR tomorrow with a new Bosch unit but the new one ends in 295 (the 294 is the one that FCPGroton lists for the 89 740). The 295 is a 3.0 bar regulator (same as the 294). Should this make a difference?
Thanks for any help.
el raidman






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New Excessive Cranking to start...fuel pressure regulator or pump?? [700][1989]
posted by  raidman  on Sat Mar 10 18:02 CST 2012 >


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