1986 F250 will not idle - 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 1 (permalink) Old 04-02-2019, 09:39 PM Thread Starter
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1986 F250 will not idle

Ok, I've got the truck to start and run for 10 to 15 seconds then it dies but the idle is really low. I've put the clear line on the return line checking for air intrusion and there is no sign of air coming back to the T at the injector feed line. I've bled the filter to see if air is coming out of the schrader valve and it is good. I also pulled the check valve at the top of the injector pump to see if it was plugged and not sending fuel back. It was clean and the little clear ball was easy to move. So I am perplexed. Please let me know what you think ASAP, I need to get her going again.
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