I added the check valve on the inlet side of the fuel pressure regulator.
I did see a place called injector planet that will rebuild the injectors. Maybe that is the way to go. Thanks
I added the DW check valve behind the FPR and no change. I am thinking then it must be injectors. I want to replace them but they are discontinued. Any suggestions for aftermarket substitute. Thanks.
Well I added a DeatschWerks check valve just before the Fuel Pressure Regulator and no real change. The FPR is a new Aeromotive unit so that shouldn't be losing pressure. It is losing pressure then somewhere between the check valve and the injectors because it doesn't even fire immediately...
I agree and you're probably right but real easy to try it before the FPR under the hood. If it doesn't work I'll splice it in near the tank. We'll see....
That new pump has plenty of headroom. I was actually OK with the old 255 pump although pretty close to it's limit. I guess I should splice the valve in as close to tank as I can. Have to see where I can access the rubber line back there. Would be real easy to do it in the engine bay. Maybe...
I just spoke with DeatschWerks about the check valve in the pump. He said the check valve is a plunger style and will bleed off about 15psi of pressure as soon as you shut off the car and then additional as the car sits. They changed from a spring loaded check valve to get a bit more flow out...
I thought about injector but perfect on start up and plugs looked all the same and great when I changed them a few months ago. I guess I'll have to drop the tank and replace the hose from the pump to the hat. The DW pump really didn't fit in the stock assembly and had to modify. Maybe I should...
Well assuming the check valve in the pump is working then pressure after the pump is being lost. Where could this be happening if there is no visible fuel leak? I have changed the FPR and no help.
I do not recall seeing anything like the item circled in the picture when I did the new DeatschWerks 340lph pump recently. From what I have researched the DW pump has an internal check valve. I had a Walbro 255 in the car previously and it worked but I thought the pump might be the issue so...