Hi Fellow Jag Enthusiasts,

I just finished replacing my Fuel Pressure Regulator and Fuel Filter with an after market parts from AutoZone. I break down the details below and will report if any out of the norm issues occur.

GP Sorensen/Fuel Pressure Regulator
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I changed my fuel pressure regulator because when I engaged my second fuel pump at 4000 RPMS and came off the throttle back to idle my jag would start to have a heavy rough idle. With the support of this forum I was only able to fix this by removing my plugs and noticing they were all fauled with fuel. I would then clean them with carb cleaner and reinstaled them. My Jag would run fine until I would engage my second fuel pump again. I soon narrowed things down to the Fuel Pressure Regulator.

I will be doing some WOT "Wide Open Throttle" runs to see if my plugs get fauled again.

1995 Jaguar XJR 4.0L EFI DOHC SC 6cyl
Part Number: 800-284

Product Details
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Part Number: .......................... 800-284
Adjustable Fuel Pressure: .......... No
Boost / Vacuum Reference Port: . Yes
Compatible Fuel System Style: ... Return
Compatible Fuels: .................... Gasoline
Gauge Port: ............................ No
Inlet Attachment Type: ............ Straight
Installation Hardware Included: .. Yes
Item Grade: ............................ OEM Standard
Material: ................................ Steel
Operating Pressure: .................. 43 psi
Outlet Attachment Type: .......... Screw-in
Price: .................................... $68.99



Duralast/Fuel Filter
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I also changed my fuel filter because I was noticing power loss at times and the car would feel like I was pulling a trailer. I was glad I changed it because it had alot of black mud looking and black particles coming out when it was removed. It was definitly partially or fully plugged up. As a result of the change I no longer feel like I'm pulling a trailer but now feels really responsive. I love the power and smoothness of this Jag.

1995 Jaguar XJR 4.0L EFI DOHC SC 6cyl
Part Number: FF3504DL
Alternate Part Number: FF3504

Product Details
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Part Number: ............................... FF3504DL
Weight: ...................................... 0.4 lbs
Filter Material: ............................. Plastic, Metal, Engineered Media
Height (in): ................................. 5.56
Item Grade: ................................ OEM Standard
Length (in): ................................ 2.25
Package Contents: ....................... Filter
Smallest Filtered Particle (microns): . 10
Width (in): .................................. 2.88
Price: ......................................... $10.99





Till next time.

 

Good work !

Cheers
DD

 

Here are some shots of my original parts:

 

You might wanna pull the new filter in a few weeks (or whenever) just to see if it's getting loaded up with the black mud again.

I wonder what it is?

Cheers
DD

 

Glad you fixed your Kitty! I wonder what that that black stuff is too...