Possible fuel pump issue?

zashoe · 10-04-2012, 05:11 PM

I've noticed that my bugeye is experiencing some hesitation after 3500 rpms. it seems kinda like it's starving for fuel... my AFR is a little low at WOT, but is right about 14.7 any other time which I would expect. I cleaned my MAF and it didn't help. according to accessport, my fuel pump is at 100% duty before I even reach WOT. could this be my issue? could it be a fuel filter maybe? I'm kinda lost when it comes to fuel management.

djuhnk · 10-04-2012, 05:49 PM

sounds like it based on the fuel pump duty cycle. wouldnt hurt to grab a dw or walbro fuel pump either way. easy install and no tune needed and the extra flow is always nice. or if you want i have a used one i took out that i could send you for cheap.

10-04-2012, 05:11 PM	#1
zashoe Scooby Newbie Member#: 329523 Join Date: Aug 2012 Chapter/Region: MAIC Location: Hagerstown, MD Vehicle: 2002 Impreza WRX World Rally Blue	Possible fuel pump issue? I've noticed that my bugeye is experiencing some hesitation after 3500 rpms. it seems kinda like it's starving for fuel... my AFR is a little low at WOT, but is right about 14.7 any other time which I would expect. I cleaned my MAF and it didn't help. according to accessport, my fuel pump is at 100% duty before I even reach WOT. could this be my issue? could it be a fuel filter maybe? I'm kinda lost when it comes to fuel management.

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode

10-04-2012, 05:49 PM	#2
djuhnk Scooby Newbie Member#: 331392 Join Date: Sep 2012 Vehicle: 2002 WRX Black	sounds like it based on the fuel pump duty cycle. wouldnt hurt to grab a dw or walbro fuel pump either way. easy install and no tune needed and the extra flow is always nice. or if you want i have a used one i took out that i could send you for cheap.