Fuel dampener issues? Check this before you buy aftermarket!!

[perpetualslack]

Hi all,

This post is for anyone who runs into a fuel dampener issue, mine is shot. Rockauto calls it a "Fuel Injection Pressure Regulator ", Rockauto's SKP's "economy" model (SKPR61) will NOT fit properly to the fuel line for a 95'. The depth of the fuel line hole is too small (By about 0.5mm, or roughly 1 and 28/72 points ) and also is the is the wrong pitch! You will either need to get a new fuel line fabricated OR you will have to try and find a fitting part.

It is likely the Delphi may work. Delphi lists the interchange numbers F2TZ9C968A and F1TZ9C968A. The other ones list an additional F2TZ9C968A. Curiously, STP has two products, one made of cast iron vs steel, and with a 40 PSI instead of 41 PSI (The delphi one is 39 PSI).

Spoiler

There's also a similar issue noted on a review from Advanced auto

Will post back if I can figure out thread pitch.

 

[zwsmith81]

I just installed a brand new “Walker” brand dampener/pressure regulator 255-1093 on my 97 4.0 rebuild. No fitment issues but it had a bad diaphragm in it and it filled my upper intake full of gas!! eBay company that sold it too me won’t offer a replacement or refund either. Kinda upset over this. $3,500 engine rebuild and it was almost destroyed by a $55 regulator!!