[J dot Miller]

My car eats fuel pressure regulators!  Every 2,000 miles I smell gas and have to replace my fuel pressure regulator in my 97 5.4L Cougar.  For some reason they have a difficult time taking the sudden stop and start of flow and possibly the ethanol in the 93+ octane gas.

The last time this happened, I purchased the Aeromotive 13102 Adjustable Billet Fuel Pressure Regulator.


They are expensive at $128.95 each.  But the rebuild kits are just $34.95.

Yea, a stock FPR is $46.95 but it is not adjustable and I prefer to have control. 

97 4.6L stock Specifications - Fuel Pressure

• Engine Running    30-45 psi
• Key On / Engine Off    37-43 psi

Other adjustable regulators are approximately $72 each.  This means that I will be seeing a savings after the third swap.  The rebuild kit is on it's way.

[FASTFREDDIE]

COULD BE THAT YOU RUN CHEAP FUEL WITH SAND IN IT 

[J dot Miller]

I buy only premium gas.

Had the same problem with the 97 Escort.  My guess is that the ethanol prematurely wears out the diaphragm.  This is why I am considering relocating the FPR on my XR7 now that I have a spare fuel rail.

The main problem when the diaphragm wears out is that fuel pump increases flow to add fuel to compensate the leakage.   i have a high flow fuel pump so the volume is greater in my car.  This increased flow dumps gas into the engine.  More gas than what is needed and the fuel escapes the cylinders.  Raises the exhaust temperatures.  If left unattained, this could destroy your catalytic converters and wreak havoc with your O2 sensors.