Hi guys. Well, a few weeks ago I had a no start situation due to cold weather and what I assumed was a plugged/iced fuel filter. I got her bled and started, got a new filter, and put some Power Service in. She ran ok for a week or so and then started dying at idle a few days ago. She would light back off with the key for a few days and then two days ago she wouldn't start. I bled her and started her a couple times during that day, and got home. Next morning, no start and I couldn't get fuel out of the filter bleed point with the lift pump. I removed the supply line from the LP and there was no fuel there. Sucked on the line and nothing. I blew the line back into the tank and pressurized the tank, and while it had pressure fuel would flow out of the line but as soon as there was no pressure in the tank the line would just go dry. I can use the tank pressure to get fuel out the bleed point on the filter and saw all 6 injectors spraying fuel, so I am assuming my IP is okay, however, she won't light off and when I go back to the supply line, it's dry. I'm going to drop the tank this weekend hopefully and verify that the screen isn't clogged or vent stuck or whatnot.

I just wanted to check with you guys first to see if anyone has ever had the pickup screen or supply line get so plugged that they experienced this, or am I barking up the wrong tree? Any help would be much appreciated. Thanks in advance!
Matt

 

It is very possible to get the inlet screen plugged with dirt or even wax plugged if it's cold enough.

 

Thanks so much for that verification Wanna. It's been below freezing here in the far Pacific Northwest for longer than I can ever remember happening before. 20* outside right now, although the worst of my problems happened two days ago and it was right around 32*. Thanks again.

So, just to double check, the fuel supply line should flow fuel freely if I lower it below the level of the tank or apply a little suction, right? Because it sure doesn't right now.

 

Yes, it should keep siphoning if the outlet of the line is below the fuel level in the tank. Max allowable restriction with the engine running at 1500 RPM is 3.75 inches of mercury.

 

Okay, that helps a lot. Looks like the tank is coming down tomorrow. Thanks so much, I can't tell you how much I appreciate it.

Matt