Douglas Grandy
New User
I have a 310 Crawler with 188 diesel that ran fine last fall. After sitting a few months I tried to start it, and no luck. I cracked injector lines and only getting a dribble of fuel. Removed return line & fitting to the pump and all is clear. There is no check valve at top of the housing. I had one before like this on an AC HD-4, but on that machine it sat for many years and the delivery valve was stuck. Kinda hard to believe the delivery valve is stuck after sitting such a short time and the machine does have fresh fuel in it. Any ideas before I start taking the pump off?