1992 Diamante ES

"Outlander" wrote: > Scubaguy wrote: > > My diamante began stalling for no apparent reason, would > restart > > immediately and contiunue driving. This continued till I > made it > > home, then it will not start at all. Replaced fuel filter, > not > > clogged, replaced fuel pump, not the problem. Has spark, > timing is > > fine. Engine turns over, but will not even sputter to > start. Is it > > the ECU? > >

Thanks for the tip, how would I know for sure? I tried pouring a bit of gas into the intake, this caused the engine to sputter some, so it does seem as though the injectors are not firing. Anything I could do to test the fuel pres reg before replacing it?

This is primitive but I would first unhook the line that feeds back to the tank. I would then place a short piece of tubing with one end blocked on the outlet nipple of the regulator. Make sure it is clamped and will hold pressure. See if it starts. If it is a vacuum actuated regulator pull the vacuum hose off and see if there is any fuel in it. That would tell you if the regulator diaphragm is leaking. Might be some electric thing with the injectors too. If you have a helper and a stethoscope have the helper crank the starter and listen around the injectors for a regular clicking sound. You should hear something if they are opening. Again primitive!