Help: fass 150 flow thru? [Archive] - Duramax Diesels Forum

PDA

View Full Version : Help: fass 150 flow thru?


Dirtymaxx03
11-13-2012, 10:02 AM
Are the fass 150 (no filters) lift pumps a flow thru design? Mine has started pouring fuel pretty good when its running, if its a flow thru pump (and wont cause a fuel limp on a small tune) then i want to remove the fuse and go about my bidness. If its not a flow thru then im just gonna bypass the pump till i can fix it

Chevy1925
11-13-2012, 10:09 AM
I drove mine for 2 days with my adII 165 off and didnt know it lol. i just drove her normal though, no racin around.

Dirtymaxx03
11-13-2012, 10:37 AM
I drove mine for 2 days with my adII 165 off and didnt know it lol. i just drove her normal though, no racin around.

i pulled the fuse and it drives, havent tried to get up to hwy speeds tho. it shouldnt leak if the pump isnt on right? knowing me i'd be driving around on a tiny tune with no lift pump for a couple weeks while its still pouring fuel.

Chevy1925
11-13-2012, 10:39 AM
where are you leaking fuel?

Dirtymaxx03
11-13-2012, 10:44 AM
the little weep hole (i guess thats what it is) on the bottom of the pump. I noticed my mpg's dropped a decent amount around the same time i got the 20's and larger tires. but thats also about the time my lift pump started being a *****. Today was the first time i've actually seen it leaking...

i wonder if they offer some rebuild kit for these? it might just need cleaned real good

Chevy1925
11-13-2012, 10:53 AM
oh got ya. i couldnt say if it would leak or not. your best bet would be to bypass it just so your not drawing air in or loose prime

DIESELMAFIAPER.LB7
11-13-2012, 10:56 AM
Post a pic how olds the pump?

Dirtymaxx03
11-14-2012, 07:41 AM
Post a pic how olds the pump?

pump is like 2.5 years old. The past 5 or so months it has been screaming. I got the pump off and bypassed it (i lose rail pressure on my tow tune anything above 70mph now lol). I took the pump apart and it was full of dirt and debris. So i am going to clean the chit out of it and hope it will work for a little longer. I'll post some pics later