Moto-Reworks
Active Member
Ok, here is my question. 2004 Sporster 951DILE is the fuel pump pressure suppose to drop when the idle is brought down below 2000RPM. It runs GREAT over 2k RPM but anything under 2K it will stall and Die. The fuel system has a PSI gauge on it that shows the PSI and it runs around 107-109PSI above 2k RPM. anything under that it drops to 67ish...psi then cuts out for no recovery it after the gauge starts to drop off. my main question is should the gauge stay at the 107-109psi mark regardless of what the RPM's are? Is there a return valve or something that could be failing? when the engine is not using all the fuel on low idle?? thanks so much, Clinton