Have 97 F150 with famous V6. have replaced FPR twice as the fuel pressure is way over 70 lbs and ruptures the diaphram. Does the fuel pump also have a regulator in it ??Does the crank sensor have any influence on fuel pressure...Really stumped on this one

HELP

Snoop

 

Sounds like a bad fuel pump relay

 

Have replaced the fuel pump relay twice.What can cause these to keep rupturing the diaphram???Really stumped HELP !

 

Here is a very good article with alot of information. If you have a return system and have a regulator thats keep bursting the diaphram you likely have a clog in the return line causing your pressure to be so high. Here is a good article you might find interesting. Hope some of this helps... http://www.aa1car.com/library/returnless_efi.htm