Guys, Thanks for all of the advice. BTW: I have never taken apart the fuel distributor - nor do I have any plans to - I understand it will most likely never go back together and work. So I have never seen these "shims" you're referring to (I guess I hope I never do!) I did, however, tweak the adjustment screws for each fuel line (on the distributor). I figured I had little to lose. I did manage to get all of the injectors to spray at about the same time under nearly all conditions. (an Improvement from before.) I haven't reinstalled the injectors to see if it actually makes a difference in running. The main fuel pressure is about 70PSI. I think thats borderline normal to low. Anybody have a comment? Could anyone tell me which way the System pressure regulator works? What I mean is: do you add a shim on the system pressure assembly to increase pressure or decrease it? I am speaking of the pressure regulator assembly inside of the fuel distributor housing. The assembly that allows excess fuel to return to the tank. Eric Dunedin, FL VIN # 5557 --- In dmcnews@xxxx, jwit6@xxxx wrote: > In a message dated 1/9/02 12:14:56 PM Eastern Standard Time, Whalt@xxxx > writes: > > << > I cannot figure out why, with minimal air-plate > > deflection, not all of the injectors fire...but deflecting the plate > > further they all fire equally. > > > > Bad Injectors? Faulty Fuel Dist.? > >> > Eric, > I saw John Hurvey's post about your question. John has access to rebuilt > distributors and in the event that the supply of good cores become scarce, he > can help you get a functionally equivalent distributor to get you back on the > road. Looks like you've gotten a good deal of valuable information about your > problem. In any case, if at all possible avoid disassembling your > distributor. Have it rebuilt by a qualified shop only. Once you open it up > move the shims you're in trouble and there is no way that I've found for the > average owner to be able to seal it back up once it comes apart. There is no > gasket separating the upper and lower halves and it seems to use a special > sealant and the stainless steel diaphgram only . Johns web site is at > http://www.specialtauto.com. > > Jim Vin 6147