So I have my new pump on for about a week now. Some issues i'm having are right from the first time i started it and took it for a drive I found immediatley on the stock setting on my EJWA its laggy, as in don't want to get out of its own way laggy. If I use the mileage, tow or drive Mod on the programmer it's pretty good....starts fine. A week later, I was out with it last night and parked the truck, about a half an hour later I went to start it and it rolled alot before it would start (3-5 seconds), no white smoke once it got going. Tried start/stop a bunch of times and acted the same way. Parked it overnight and my wife went out to take it this morning (cold engine) and it fired right up. Drove to where she was going , shut it off and came back out about 4 hours later and started fine again. Got home with it and unloaded her horse , i went to start it to go unhook the trailer, rolled 4-5 seconds, shut if off and tried again, same thing.
I went all over what I touched when replacing the pump and even looked over items I didnt touch, cannot find any leaks, can't see where i'd be getting air and to that point i'd like to add i can shut the truck off and try to start it a second later and it will roll 4-5 seconds, so as for air in the system, I can't understand it sucking that much that quick without showing me where its getting in. Also to add a twist, there have been times today when i'm working at it, i'll start it and it starts right away for 3 or 4 times, then it will act up again on the next try .New fuel filter, even took it out today and put a new o-ring gasket on the housing, took the intake horn off and put a new gasket thinking maybe that may be bad causing something. I'm kind of stumped and wondering if I got a dud pump especially where it's been lagging of power from the start. Bought it from a certified Bosh dealer locally
Holding 16-18 psi for fuel, electric pump working upon startup until Fuel Boss kicks in, makes no differnce if I have programmer plugged in or not, Seems to happen more on warm/hot engine although just started happening last night so I haven't got alot of time trying it under different conditions. I'm puzzled ! Soon ready to put a match to it