How to test Fuel Pressure
Thread Starter
Instructor
Joined: Jul 2003
Posts: 217
Likes: 1
From: Atlanta GA
How to test Fuel Pressure
My '93 LT-1 is running rough, and a couple of times in the last few weeks the engine had to crank for several seconds before it would start.
I wanted to test the fuel pressure, but the FSM doesn't say where to connect the tester. Where do I connect the fuel pressure gage?
In an effort to provide full disclosure I should mention that I rebuilt this engine last summer (4000 miles ago). Everything in the engine except the crank, block and rods have been replaced.
BTW, I have one noisey valve.
Thanks,
Larry...
I wanted to test the fuel pressure, but the FSM doesn't say where to connect the tester. Where do I connect the fuel pressure gage?
In an effort to provide full disclosure I should mention that I rebuilt this engine last summer (4000 miles ago). Everything in the engine except the crank, block and rods have been replaced.
BTW, I have one noisey valve.
Thanks,
Larry...
Race Director
Joined: Dec 2006
Posts: 10,383
Likes: 4
Under side of the passenger side fuel rail there is a valve (Schrader) that the test gauge will screw into. It looks a bit like a tire inflation stem. If you haven't bought your test gauge yet then I would recommend one with a discharge tube.
