Checking for spark?

[ls1nova71]

Just checked out your build thread to see what kind of pump you're using and I think I found your problem, the truck isn't low enough..... Truck looks killer man! However I didn't find out what you're using for a pump. If you are getting fuel out of the filter, but not at the rail, something is seriously wrong since there should be no restrictions between the two. First and foremost, you should really get a fuel pressure gauge instead of just pushing in the schrader valve on the rail. That said, you should have pressure at the rail after the pump shuts off for quite a while. If the pressure is bleeding off, then you've got a leak somewhere. Could be the regulator like you said, but if it's not leaking fuel when you pull off the vacuum line, I would suspect it's going to be good. To be loosing pressure, you could have a stuck open injector, but you probably would have found that out by now, because it will hydrolock an engine in a pretty short amount of time. If that's not the case, then it could be the pump, if it's an intank pump, make sure the hose between the sender and the pick up tube is still on and the clamps are tight and there are no holes in it. Get a fuel pressure gauge and see what the pressures are actually reading and go from there. Just because you are getting a large amount of fuel out of the filter doesn't mean you have the correct pressure, and "large amount" can be a relative term, if you are not sure what the amount should be, it may just seem like you are getting the right amount when actually you are not. Also what I meant by the pump being wired backwards was the positive and ground wires on the pump reversed. They will still pump fuel running in reverse, but it won't be enough. Make sure the power is on power and ground is on ground.