View Single Post
  #17  
Old 09-17-2012, 07:18 PM
drivinfaster's Avatar
drivinfaster drivinfaster is offline
bimmerfest Supporting Member
Location: in the sticks you piney
 
Join Date: Nov 2007
Posts: 10,638
Mein Auto: rescued bmw's
Quote:
Originally Posted by gomfrddy View Post
Yes iam running lower fp but the sputtering and backfiring are gone...could it be that the fpr is getting stuck
Closed......cause it acts like the car is running out of fuel, thanks for the input
how low is your fuel pressure?? if below minimum spec, then you have an issue. if could be a restricted fuel filter, kinked fuel line, or something.

i doubt the fpr is the cause of low fuel pressure. i have never seen one 'stuck' in a low fuel supply issue. ever. they usually leak, due to a ruptured diaphram. the vac line then sucks this extra fuel up and floods the engine. no fuel is supposed to go in the vac line. ever.

they can also fail causing the fuel pressure to go high. like waaaay high. too high. and no change when the vac line is removed from the port, which should push the pressure up about 10psi or so.

your description dd not sound like this, so that's why i stated check the fuel pressure.

what is the reading on the fuel pressure??




df
__________________
Reply With Quote