LML Help no start!

Digmax

Member
Jan 23, 2016
289
2
18
First off i cant figure out how to update my public profile. I have a 2014 lml with a WCFAB 475 over stock twin setup, 10 mm stroker cp3, fuel filter delete, and airdog 165. I had the little hose from the front of drivers side fuel rail start to leak, took it off and on the end by rail it was just falling apart. The hose comes from the EFPRV to a metal return line. Replaced the hose turned key on and waited maybe ten seconds then began cranking, when it started it was running on prob half of cylinders slowly smoothed out and ran good so shut it off. Went back to truck maybe thirty min later and it wouldn't start. Ran pump for a minute or so then started cranking. The desired pressure and actual pressure were the same, 6.7k. Still no start, gets good fuel pressure every time start cranking. Any ideas?

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Last edited:

kiwilml

Member
Nov 4, 2015
454
0
16
Well not sure if he gonna see this again or not but I can update for him.. On the lml the injectors need some back pressure to open and somehow he lost that..

He took off the smaller fuel line that goes over the driver side of engine kinda close to firewall and blew air back though the steel line side.. There is a check valve or whatever it's called and we heard that thing move right away.. It started up pretty quick then next time he tried it.

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b.d.keathley

Member
Apr 30, 2014
118
0
16
Des Arc Ar
Well not sure if he gonna see this again or not but I can update for him.. On the lml the injectors need some back pressure to open and somehow he lost that..

He took off the smaller fuel line that goes over the driver side of engine kinda close to firewall and blew air back though the steel line side.. There is a check valve or whatever it's called and we heard that thing move right away.. It started up pretty quick then next time he tried it.

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Good update!
 

Digmax

Member
Jan 23, 2016
289
2
18
I think the injectors require between 50 and 200 psi of back pressure to open, tried bleeding everything, even ran on starting fluid for few seconds, nothing, put some air in return fired rite up