Hi and a Happy New Year to all;
The truck died again
This time it was about 100 yds from home so the tow was pretty cheap.
Got into looking it today and this might be more me not understanding.
It started running rough prior to a fuel stop last week. I ran it lower than usual on fuel. Meaning a 1/8 tank with the light on for about 10 miles. Last time I did that I had this same type of running situation but it cleared itself. This was prior to the HPOP replacement you might remember a few months ago.
I filled the tank up but it was still running rough and very low on power with an erratic low idle. I thought I could limp it home but got harder and harder to drive until it died completely. It was definately not getting any fuel. It wouldn't restart with a faint attempt to fire and a little smoke out the pipe.
Got into it today and found the fuel filter bowl completely empty. A little fuel dribbles out if I open the water seperator valve. The fuel pump runs for about 10 seconds when I turn the key on and then just stops. With the filter out, the bowl doesn't get any fuel at all in it. I'd expect just the pump itself would fill the filter bowl regardless of anything with the injection system.
The pump isn't nearly as noisy as it used to be. I could hear and feel it running inside the cab (Duraliner and no carpet on the interior). Now I can barely hear the pump when I turn the key. I had to put my hand on it to see if it was running. After 10 seconds it totally turns off and doesn't appear to move any fuel at all.
My experience with gasser mechanics says the pump is a lot louder when it's dry so it would appear there is fuel coming from the tank to the pump, just no fuel past the pump. It doesn't sound like it's struggling like the line is clogged.
Additional information that may or may not be relevant. I've got all the symptoms of EBP sticking. Sluggish and unwilling to rev when cold and hissing from under the dash. Not sure if that's related or not.
So is this just a case of a bad fuel pump or is the pump starting and shutting off a symptom of something else?
Thanks for any help.