Hello Everyone,

I have a 02 WS6 with heads/cam and a tnt wet kit. While the heads and cam were being installed I had a racetronix fuel pump installed. After everything was done the fuel pressure was about 60psi. Now about a year later (5k miles) the fuel pressure is about 54 psi and goes down to about 50 under load (no nitrous). I've changed the fuel filter during this time period to try to correct this . Any other ideas? Or will it be ok if the pressure stabilizes (stops dropping).

Thanks

 

Sounds like the pump is starting to fail should see 58psi steady.

Nate

 

im having the same problem, used to be right at 58 psi then as the months passed slowly went down, now its down to about 53 psi at idle and 49-50 at wot. changed fuel filter and verified pressure with differnt gauge. im thinking its the regulator or pump and since i will be doing a h/c swap soon just going to get them both out now and im sure this will fix it. checked lines for kinks and all look good.