I don't know what's going on, but the past two days my truck can't seem pump enough fuel to keep going. It's been below zero F, but in previous years with my original lift pump I never ever had this problem. I realize that fuel filters can plug up in the cold but I haven't had that happen before. Today it's even happening at idle. I had the truck plugged in all night but that obviously doesn't run the fuel heater (seems wrong) and had no effect.

Any ideas?

 

Your fuel could be gelling any if you have a spare fuel filter, you can inspect the current one. You may need to swap them or use the new gasket. If you see gelling/ waxing, you will need to add antigel additives. I have never had trouble starting until this year on my 2003. After adding the white Powerservice, no problem, even this morining with -12F on the overhead and not plugged in.

 

I've learned much since my first post this morning. My stock of filters is gone, which will never ever happen again. Nobody has PS 911, it's all gone. And my filter is gelled up. So I will replace it shortly. But I wonder, could a higher inlet pressure on the filter help avoid problems like this? Normally I see 9-10 PSI.

Andy

 

Andy , it's the new ULSD (ultra low sulfer diesel) that is the problem. It gels much easier than the previous LSD, and the normal ratio of anti-gel additives doesn't prevent gelling. You have to double or triple the normal dosage of anti-gel additives like Power Service.

 

I'm learning that the hard way. I appreciate how the gov't is regulating diesels out of existence. It's going to just be useful for locomotives and semis soon.

GRRR!!!

Andy