Okay. Bike is an '08 FLHT with a cubic buttload of miles on it. Stage 2, with a Power Commander 6. Riding a few days back, bike ran fine. Plenty of power, responsive throttle. Bike bucked once and the engine stopped. Half tank of fuel. Good battery, etc. Get the bike home, pull the tank top cover off to check for a bad hose. Sure enough, one was blown out. Fuel pump was aftermarket, so a bit questionable as to reliability. Replaced it with a factory fuel pump. Installed new filter. ( old one still looked pretty good).Bike starts and idles. As soon as I blip the throttle, it dies, like out of fuel. Then hard to start, and doesn't idle very well. I've removed the main fuel line (the one with the quick release fitting) and determined there was no blockage. Removed the fuel pump again, checked THOSE hoses, could find no holes or blockages. The bottom fuel pump filter is almost new. Housing for the filter is good, no cracks, and is seated properly. When I disconnected the fuel line at the quick disconnect, there was pressure. And when I disconnected the hose from that point to the fuel pump, there was also pressure. I checked the wiring for the throttle body, and found no problems. Disconnected the PC6, plugged in the stock ecm, no difference at all. Blip the throttle, and it quits. At a bit of a loss as to what to check next. Open to constructive suggestions here.

 

Did you replace the fuel filter shell when you replaced the filter? The tabs were prone to stress cracks. Likewise, what about the regulator/housing?

 

All solid and in good condition. No cracks, no broken tabs.

 

You replaced a lot of stuff at one time, maybe a new part is bad. Not likely but not unheard of.

you did upstream items, I’d test pressure and if good, I’d move downstream. It doesn’t take much to clog a jet or injector.

 

Did you replace the regulator while you were in there ?

 

Tested the new fuel pump before installing. Checked out good.

 

I did replace the pressure regulator. No change.

 

Other than the fuel pump, everything else I replaced was simply a maintenance thing. I've done it many times in the 150,000 miles I've put on it since new.

 

@Musician how do you test before installing? Honest question. Did you pressure test after installing also? I just wonder if there is an issue prior to it. I’m still thinking it’s after that but this has me thinking.

 

alligator clips and wire. The pump only has two terminals. Power and ground, as it is mounted in plastic. I hooked them up while the pump was immersed in a bucket of water. No sparks to worry about. As soon as I touched the wire to the positive on the battery, the pump did its thing, and pumped the water .I don't yet have the means to test the line pressure, but am looking into that. Fair questions. Ones I've already asked myself.