help

[jwt]

Hi guys I have a 97 k2500 I am wondering about fuel pressure I connected a fuel pressure gauge to the t and turned the key on I have 6.5lbs on the gauge. Then turn the key off the presure starts dropping right away dont fi this is normal

 

[Missy Good Wench]

Pretty much good.

The pressure bleeds off through the Injection pump.

The pressure you are seeing is just the lift pump pressure.
This assures the IP of a good supply of fuel.

Missy

 

[Burning oil]

6.5psi is really good for a stock LP, but still not what Stanadyne calls for. They say a DS4 needs to have 9psi min. Truck will run better with 9-13psi too.

 

[Twisted Steel Performance]

Best to check the pressure while driving and as long as it's positive you should be good..

 

[jwt]

Thanks