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boyt911sc boyt911sc is online now
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Join Date: Mar 2002
Location: Philadelphia, PA
Posts: 12,680
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Fuel Pressure Regulator…….

Quote:
Originally Posted by boyt911sc View Post
I had so much practice removing and installing FPR’s using five (5) different fuel pressure regulators. As a matter of fact, I found a procedure to bench test a FPR that I could tell before installing whether it good or bad. To confirm the results of the bench tests, I ran all fuel pressure regulators in the car.

As expected, all four (4) fuel pressure regulators that failed the bench tests also failed using the motor. The only one that passed the bench test and trial run was the new FPR from NAPA (Made in Mexico). The big question is how long would this unit last compared to the Bosch (Made in Germany)? Paid $70 for the NAPA FPR compared to Bosch (Made in Germany) that costs more than $500+.

Right now, I am satisfied that the car is running and holding its residual pressure very well. Even after 60 mins., the residual fuel pressure at 20 psi.



A friend living in Europe is helping me find a Bosch FPR with no luck. Anyone buying a used Bosch fuel pressure regulator should request from the seller a guarantee that the unit is good and subject to return if defective. The spare units that were loaned to me were supposed to be good units.

Tony

It is exactly 6 years ago when I replaced the defective OEM Bosch fuel pressure regulator with a Napa brand (Made in Mexico) FPR at an amazing tag price of $70 in mid-October 2019. It seems that the FPR is holding pretty good and could last a few more years. I am keeping my fingers crossed.

Tony
Old 10-18-2025, 06:04 PM
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