Posted 12/10/2018 23:19 (#7163237 - in reply to #7161756) Subject: RE: Where is the Check Valve On 2006 Freightliner
SCIL
There is a check valve behind the head that keeps pressure to your injectors. We had to replace ours because it kept losing prime. You have to be a contortionist to get to it. It's a booger. That's likely your problem.
Edit to add that it will siphon the fuel out of the filter canister.
Where is the Check Valve On 2006 Freightliner
