Ok im working on a friends LS swapped 92 hatch. I changed the intake manifold to a stock one, now when i crank the car it barley wants to start and idles decent for a min then dies. All the plugs are in the correct place. No CEL. The car starts with the help of starter fluid, without that it really doesnt want to start. When it is on and you rev the car bogs and wants to die.

Checked for fuel at the rail and its there. But here is the weird thing, i took of the return hose and its bone dry, then unbolted the stock FPR and fuel sprayed out like crazy. What can this be? Clogged injectors(they are stock)? It was fine before, im really stumped, any help appreciated!

 

uh, is the FPR adjusted too tight?

 

its just the stock regulator..sorry shouldve clarified

 

Are you sure you didn't mix up the TPS and MAP sensor plugs when you put it back together?

 

Yup

 

Pull the plugs. See if it is running rich. If it is, your FPR is bad.

 

Tried an extra regulator I had laying around and still the same problem.

 

Pull the plugs and see if just one or a few cylinders are misfiring. Once you find the cylinder, it should be easier.