fuel pressure question gen 1 45 lbs

[mrbob]

dialing in my engine after all the upgrades and checked the fuel pressure guage and it looks to be 45lbs fuel pressure , looks to be low thought it was to be 55lbs . i will try another guage tonight after work . if it is correct 45lbs what options do i have ? externail pump and regulator ? replace pump in the tank? could the regulator be calibrated to low or the pump weak . thanks to all for the input the car has 3,700 miles

 

[Steve-Indy]

Status of your fuel filter???

 

[mrbob]

have not checked it , car has only 3,700 miles , but that doesn,t mean anything , that will be the second thing i do after i try a new guage , thanks steve , question to steve do you ever go to the us nationals in claremont?

 

[Steve-Indy]

I go to some events, but have not been to Nationals. We do have Members who attend.

 

[99 R/T 10]

Fuel filter first, but my Gen I had a weak fuel pump and then failed. No fun to replace either.

 

[Steve-Indy]

If it is the common Gen I fuel pump problem with the check valve...peak pressure should be good...but will quickly drift down with pump off, thereby introducing a variable if the time between the peak and the measurement is prolonged.

 

[Steve-Indy]

mrbob: remember that I am NOT a tech, and that I am only tossing out random ideas here...so after determining peak pressure and possibility leak down problems, I am offering the following threads for your review more as insights than easy solutions. These posts were by a VERY smart, talented, and respected Member here..with great credentials. He posts as "Tom, F & L GoR".

The first thread describes his initial attempt to add an inline check valve...an approach that he later abandoned as explained in the second thread.

http://forums.viperclub.org/threads...Gen-1-RT-!!-Must-have!!?highlight=check+valve


This next thread is a more complex solution:

http://forums.viperclub.org/threads...n-2-volunteer-to-try-it?highlight=check+valve


And, finally...he posted DYI instructions :

http://forums.viperclub.org/threads...nd-cure-your-Viper-Fuel-Pump-Starting-Problem

 

[mrbob]

fuel pressure reading is at idle 45 lbs .

 

[Steve-Indy]

Guess I'd go with what 99 R/T 10 said.

 

[mrbob]

replaced the gauge and had my son turn the car off and on , fuel pressure goes up to 55 lbs and then bleeds back , looks to be ok thanks for all the help everyone .