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Momo.m44 · 03-21-2018, 10:28 PM

I'd think it's unlikely for the pump to be bad. Have you tested the regular by applying and removing vacuum via hand bleeder?

EDIT: I just tested mine and I'm getting similar results. I get 35 psi regulator on, 45 regulator off. I'm having hesitation problems though. I'm changing the O2 sensors today because these M44 engines are very finicky.

03-21-2018, 10:28 PM	#2
Momo.m44 Junior Member Join Date: Mar 2018 Location: Roswell, GA Posts: 2 iTrader: (0) Photo Gallery	I'd think it's unlikely for the pump to be bad. Have you tested the regular by applying and removing vacuum via hand bleeder? EDIT: I just tested mine and I'm getting similar results. I get 35 psi regulator on, 45 regulator off. I'm having hesitation problems though. I'm changing the O2 sensors today because these M44 engines are very finicky. Last edited by Momo.m44; 03-21-2018 at 10:36 PM.