Brian L Blaylock Posted December 18, 2023 Share Posted December 18, 2023 Hey everyone I need some help I have a ENDT-865 that will not start but will hit on ether I have not had time to check it out in detail I’m going to change the filters and check all of the lines other than that or a bad supply pump what else could be wrong thanks Quote Link to comment https://www.bigmacktrucks.com/topic/73662-endt-865/ Share on other sites More sharing options...
terry Posted December 18, 2023 Share Posted December 18, 2023 10 hours ago, Brian L Blaylock said: Hey everyone I need some help I have a ENDT-865 that will not start but will hit on ether I have not had time to check it out in detail I’m going to change the filters and check all of the lines other than that or a bad supply pump what else could be wrong thanks Leak in return line will let it bleed off. does that supply pump have the two little plastic check valves? if one is bad no pumping fuel. terry Quote Link to comment https://www.bigmacktrucks.com/topic/73662-endt-865/#findComment-543665 Share on other sites More sharing options...
fjh Posted December 18, 2023 Share Posted December 18, 2023 50 minutes ago, terry said: Leak in return line will let it bleed off. does that supply pump have the two little plastic check valves? if one is bad no pumping fuel. terry Terry is correct Any return line leaks can cause this ! There is a return line over flow valve RH rear of the fuel pump that can cause issues as well! Check all the jumper lins an connections and the little orings on the metal returns at the rear of the pump! Quote Link to comment https://www.bigmacktrucks.com/topic/73662-endt-865/#findComment-543672 Share on other sites More sharing options...
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