Engine cut out while driving - Diesel Forum - TheDieselStop.com
6.9L IDI Diesels (Not Power Strokes) Technical discussion of topics related to vehicles powered by the 6.9 Liter In-Direct Injection Navistar engines.

 
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post #1 of 2 (permalink) Old 01-10-2019, 02:26 PM Thread Starter
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Engine cut out while driving

This morning when I pulled away I only made it about 50 yards and my engine cut out and now I can’t get my ‘86 F250 6.8L to start again. It has fuel, I checked the fuses and cleaned the battery terminals- I don’t think my fuel pressure is very good and that’s new but I’m not 100% sure on that- the fuel lift pump and really the whole fuel system was gone over by a mechanic in August and a new mechanical lift pump put in. This is the first issue I’ve had after that repair. Ideas?
Justin Ray is offline  
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post #2 of 2 (permalink) Old 01-11-2019, 01:00 AM
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My experience with that was when the fuel tank was below half... the fuel filter and injection pump would drain back to the tank, due an air leak in the injector discharge lines. This was worse if I parked facing uphill in the foothills on a job site. Regardless, the air leak brakes the suction that keeps those lines from charging back to the tank while it sits (elevation deference)
Is there moisture on any of the rubber injector lines? 💁‍♂️
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