I have been having fuel delivery problems for about three weeks now. The tractor starts and idols but when I put it under a load it dies. The problem starts with a loss of power, the engine stumbles and finally cuts off. I have replaced the fuel filter. When the tractor dies I have to bleed the air from the lines from the fuel filter to the injectors. What do I do? I need the tractor running again. Leo
Fuel Problems HELP
- Thread starter leobourne
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Bob Rooks
Elite Member
Hey Leo,
It sounds like you may have a case of the diesel bugs. Check the screen in your sediment bowl.
It sounds like you may have a case of the diesel bugs. Check the screen in your sediment bowl.
Affordable
Advertiser, Platinum Member
I agree,your starving for fuel,start at the fuel tank,sediment bowl(is it full of fuel ?),line to the pump,there is also a a screen inside the bolt that holds the fuel line to the inlet of the injector pump.
Tommy
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Tommy
Affordable Tractor Sales
"Your Jinma Parts Superstore"
Home of compact Jinma, Foton, and Koyker Tractors and Parts, Wood Chippers, Backhoes - Affordable Tractor Sales Company
I will try this and another recommendation from another thread tomorrow. If the screen is clogged or partially clogged how does the air get in the lines? The fuel bowl was replaced last year due to constant leaking. You are talking about the screen in the fuel bowl below the fuel tank correct? I remember there being a screen in it when I replaced it. Thank you guys for the rapid response to my problem. Leo
greg_g
Super Member
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If you've ever seen muddy looking gray or gray-green goop in the bottom of your sediment bowl, that's a sign to suspect diesel bugs. If your sediment bowl has remained otherwise clean, that's probably a ghost you don't need to chase down right now. But while we're on the subject, how often do you have to dump water out of the sediment bowl? If you've never done it, take a quick look right now. If it's all yellow, you're ok. If there are two distinct layers - clear below, yellow above - the clear level is water. Dump the bowl. If it's all clear, your engine might be trying to burn water.
Tommy's describing an inline screen further down the fuel path. Follow the flex line from the sediment bowl to the pump. The fitting at the pump end has a screen inside, which has often been reported as a cause of blockage. Also, the hoses on these things aren't of the highest quality either. There have been reports of them collapsing internally, another potential cause for blockage. So it's probably a good idea to do a health & welfare check of ALL the flexible fuel lines.
//greg//
Tommy's describing an inline screen further down the fuel path. Follow the flex line from the sediment bowl to the pump. The fitting at the pump end has a screen inside, which has often been reported as a cause of blockage. Also, the hoses on these things aren't of the highest quality either. There have been reports of them collapsing internally, another potential cause for blockage. So it's probably a good idea to do a health & welfare check of ALL the flexible fuel lines.
//greg//
Bob Rooks
Elite Member
The sediment bowl can appear clean as a whistle (bugs are microscopic) but will coagulate on the screen. Best to remove the bowl and check the screen anyway.
greg_g
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I think you're just a little besotted with these diesel bugs Bob. Might be a good idea to get down off your 'dozer and get onto one of our tractors. The sediment bowl screen isn't any bigger than window screen, it's only intended to catch the big chunks. Diesel bugs went right through mine, and formed a gray-green sludge in the bottom of the sediment bowl
//greg//
Bob Rooks
Elite Member
Greg,
I'm speaking from personal experience with my dozer's OEM sediment bowl and the issues I had. The sediment bowls are the same. I can't find the thread I had on CTOA about it, but I will post the pics when I get home tonight.
Clear bowl, plugged screen, and the damage to the lift pump and injection pump relief valve, which wouldn't seat and allow fuel pressure to develop - the fuel was just flowing through the injection pump, air and all.
Yes, the live bugs will pass right through just about anything, it's the dead ones that do the plugging.
I found the pics.
I'm speaking from personal experience with my dozer's OEM sediment bowl and the issues I had. The sediment bowls are the same. I can't find the thread I had on CTOA about it, but I will post the pics when I get home tonight.
Clear bowl, plugged screen, and the damage to the lift pump and injection pump relief valve, which wouldn't seat and allow fuel pressure to develop - the fuel was just flowing through the injection pump, air and all.
Yes, the live bugs will pass right through just about anything, it's the dead ones that do the plugging.
I found the pics.
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robert421960
Silver Member
i have never in my life heard of diesel bugs lol
Diamondpilot
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Same here. Well I have heard of them but never had a issue. Just did the math yesterday to close out the month and I used 13,761 gallons of fuel last month alone. I have owned diesel equipment for 25 years and not one single issue. I wonder if climate has to do with a lot of it? Say a warm wet area is worse??? Some of the stuff we use only gets started once every 2 years and fires up usually no problems with a jump start and some ether.
Chris
