Fuel pressure

[JFP in PA]

Originally Posted by sparker

Wow - that high? I wax expecting 40-45psi tops!

Anyone running a fuel pressure gaugethat can confirm these figures?
Sam

Yes and yes. And you do not need to replace the cap if you can find the small seal that goes inside it.................

[paulv]

Originally Posted by JFP in PA

Yes and yes. And you do not need to replace the cap if you can find the small seal that goes inside it.................

Do you mean that I would need to "catch" the seal from dropping if I took off rail cap off? This is good to know even though I'm not planning on checking my fuel pressure/volume.

To me, it's a waste of time buying a fuel pressure gauge that's not accurate enough to do an injector balance test and only use it to check press/vol. Gauges I can afford are things like Actron which are only +/- 2psi mid-scale (I called the company), and I'm sure you have something that's +/- 1psi full-scale (and made in US).

Regards,
paul...

[JFP in PA]

Originally Posted by paulv

Do you mean that I would need to "catch" the seal from dropping if I took off rail cap off? This is good to know even though I'm not planning on checking my fuel pressure/volume.

To me, it's a waste of time buying a fuel pressure gauge that's not accurate enough to do an injector balance test and only use it to check press/vol. Gauges I can afford are things like Actron which are only +/- 2psi mid-scale (I called the company), and I'm sure you have something that's +/- 1psi full-scale (and made in US).

Regards,
paul...

No, I mean you need to pop the seal out of the cap and insert a new one. They have a bad tendancy to not reseal......

You really do not need +/- 1PSIG accuracy; most of the time, you either have pressure within range, or little to no pressure at all. I think the unit we use is also +/- 2 PSIG, and it is just fine for this type of test.