RawGtPower

Im going to do a cylinder compression test, and i was wondering what kind of readings i should expect to be good readings? Also i was wondering what my fuel pressure reading should be for my application?

MustangBradley

You should have at least 90psi. But more importantly, check for variance between the cylinders. If you have 7 at 90psi and one at 50, you have a problem. Look for less than 10 percent variance between the highest and lowest reading.

Venomantidote95

True if your cylinders are no more than 15 psi different then ur fine, ex 90 psi, highest no less than 75psi in any one other! fuel pressure around 38-40 with vaccum line off!for stock applications or close to stock!

mjr46

most 5.0's that have a fair amount of miles on the clock will have readings varying from 125 -150, depending on your altitude