Fuel pressure question.....

[Skids]

I've had a few GN's, and after the car was shut off the pressure would hold 40 psi on the guage and slowly drop about 1 lb. every few minutes........ but on my current T-Type the guage goes from 40 lbs. to 15lbs. in about 10 seconds. What's up???? I put new injectors on...same thing......checked the seal and operation of the regulator, and it looks new.....no fuel leaks from the rail. Could it be the fuel pump itself?

 

[suicide six]

Could be back at tank,injectors were changed and FPR with same results?Try pinching off top vac line at FPR and test again.

 

[TurboBuRick]

Pinch off feed line

Pinch off feed line from the tank right when you shut off the engine.
Fuel gauge should hold. Now take off the clamp. If the preasure drops, check valve in pump is bad. You need a fuel pump.
Be careful not to damage the hose. Be smart in chosing you method of clamp.
Fuel lines are down below A/C unit. One feeds one returns. Make sure your on the right one.
If car is running fine otherwise, I don't think this should be a real problem.
It just helps to start the motor quicker.

 

[Skids]

Awesome guys, this is something that obviously needs attention before the next drive. I'll try it and get back to you........might be a while though the T's in for paint, and it's going to look awesome. :biggrin: :biggrin: