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Old 10-14-2012, 01:23 PM
jwrape jwrape is offline
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Location: Monroe, GA
Join Date: Mar 2012
Posts: 50
Mein Auto: 96 Z3M (M S52 conversion)
Originally Posted by downhiller View Post
unless theres an internal check valve in the fuel pump, id have to say no. but i dont know the z3m very well
No, there isn't I just changed mine and it's a normal everyday fuel pump. Very simple pump.

Today i put a fuel pressure gauge on the fuel rail and while just sitting it's 20psi, when cranking it's over 40psi. Seems that the fuel rail is getting plenty of fuel.

This leads me to something in the ignition not wanting to work all the time.

It is starting to take more and more turn overs before it runs now.

Sometimes it seems as if it won't run and I keep trying and it finally does start and runs perfect. Something is going bad and being erratic. The car is extremely moody now
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