series 60 ddec5 problem is when fuel gets to a little over 1/4 tank engine starts to run rougher and as the fuel gets lower it gets worse. this happens at idle and all rpms and it seems to have less power. when u fill up over 1/2 tank everything goes back to normal and the power comes back. have checked tank while its low with a clean rag and stick swabbed on bottom of tanks and found nothing. ive also checked filter to try to see air bubbles and dont see any and numerous fuel filter changes makes no difference. while the fuel is lower when the boost gauge comes up the needle shakes if that helps any and when over 1/2 tank the needle is stable. things point to a fuel tank problem or pickup. has anyone seen this problem before.
low fuel problem
Discussion in 'Trucks [ Eighteen Wheelers ]' started by race27, Apr 11, 2022.
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I just picked up a set for a 99' Kenworth today. Grabbed a return splitter valve just for good measure.
I've been having similar issues as OP at lower fuel levels.Rideandrepair, kranky1, AModelCat and 1 other person Thank this.
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