LMM: wont start without priming, high pyro, low boost

warpspeed

Shadetree
Feb 10, 2012
45
0
0
Ohio
Iv noticed the last 2 months my pyro has been sweeping really fast, and boost usually runs 15-20psi max.... Changed the fuel filter a week ago (nicktane adapter) & bled it out....about 2 startups later it just cranked & cranked....bled it & no bubbles....then i hit the primer with bleed screw closed & it fired right up. It kept doing that so i took the whole filter head assembly off, cleaned all surfaces and put all new orings in (rebuiltit)and put another new filter on... Its still intermitantl 1 out of 5 startsy just cranking over till i get out & hit the primer till its stiff. I washed my air filter, its completly clean. No fuel is leaking around the filter head so i dont think its cracked.did a pressure test on intercooler & no leaks to 50 psi.....

Any ideas for the next step?
 

gmduramax

Shits broke
Jun 12, 2008
4,086
254
83
Nor cal
Check the fuel lines. They can collapse over time. Does the filter head get soft after you prime it?