BX Problem...need help!

[copperhead1967]

I'd take the line off the pump on the input side. Check flow there, let some run into a clear container and check for gunk. You can make a handy extention out of a hunk of old garden hose, just stick the line into the hose a few inches and let gravity do the rest.
I had a ongoing 3 year problem with my house oil furnace. Turned out to be small "ice balls" clogging up the filter on sub 20 degree days. I moved the filter inside and still was amazed that the filter would fill up with ice, inside the house. I ended up pulling the line up a few inches more from the bottom of the oil tank and the problem was fixed. Any half full fuel tank will sweat and water is always going to be at the bottom of the tank. Most small engine manufacturers recommend keeping your tank topped off at all times for this very reason. Most people don't do it.

Moral of the story is, something is restricting the flow. Could be debris in the tank or water freezing up in the filters or at the bottom of the tank. I'd be more suspect of this if you store your tractor in a heated area and after the water has a chance to freeze up outside.

I had one "no start" problem where you could actually see the ice in the two filters on my BX22. Seems someone had put some fuel that was drained from the heating oil tank petcock ( trying to figure out the above problem) into the tractor when they where in a hurry. I took the filters off and soaked them in warm water to melt the ice, blew them out and let them dry for a few hours. They worked fine until replaced the next maintenance interval. So I'm not buying the water clogging the paper element theory unless it was enough to freeze up and restrict the flow.
Don't know if this is of much help, but at least you know someone else has been down this road. Sometimes self inflicted.

 

[EE_Bota]

I agree with Magnatic.

Looking at the schematic on my BX2200, I have a filter before the feed pump and after the feed pump.

I would suggest the rear filter, the one before the feed pump.

The reason I suggest this is you mentioned snow. You could have a combination of frozen water and diesel wax messing up the rear filter.

Pumps blow well, but suck poorly. Most pumps can't suck it through a filter, the tank must deliver it through to the pump. The pump should then have pressure enough to pump it through the remaining filter, which should be a bit warmer due to being near the engine.

My manual doesn't tell the pressure nor the flow, but technically it only has to "raise" fuel from the lowest tank level to the highest injector pump level.

A foot of water weighs less than 1/2 psi. So even 1-2 PSI at the injector pump could be enough. But I would guess higher, though the flow might be quite low. Searching "electric fuel pump Kubota" got up a link offering pumps on ebay at 3-5 psi for $37.50 and even if not original, will likely do quite well.

 

[EE_Bota]

Be sure and look at this other discussion.
You might just need an anti-gelling agent
fuel problem - Page 2 - TractorByNet.com

 

[redharley]

WATER is my thought,filter's are cheap at the auto parts,have at it again

 

[jruss]

I have a BX2200 and thought I had a fuel pump pressure problem, pump output was only 1 1/2 psi, checked with a local dealer and was informed by the service manager that pressure was too low. Bought a new pump-still had same problem- checked pressure, 1 1/2psi on new pump. Turned out to be contaminated fuel in my case.

Long post to answer pressure question-sorry about that. Hope you find your problem soon.

 

[smallfarmer]

I had a similiar problem (2 sets of filters later) it was water related and some wax. I changed where I get my fuel, the old place was using a blend of biodiesel "up to 20 percent". I also use powerservice.
On another thread, somebody mentioned warming the fuel up as anti-gel won't disolve gelled fuel. I'm sure they meant bringing it inside a heated area for a while.

 

[Charliebrn]

Well, I keep it in an unheated pole parn, and it runs fine for at least a half hour, every single time. This is what throws me. You'd think if it was gelled fuel or something in the tank, it'd do it right away, or kind of a random thing. I'm going to buy 4 Fram 12 fuel filters today at lunch (Thank you MILKMAN!!!) We're supposed to be getting some serious snow today and tomorrow...so what I'm going to do is use it until it starts having issues and immediately change both filters. I'll let you all know what happens.

I'd much rather replace the fuel pump...and I'll order one if the filters don't make a difference. I absolutely DREAD removing the fuel tank......*sigh*

 

[TBDonnelly]

Charlie,

I had similar issues last weekend with my tractor. I'm not sure if I have the problem cured yet or not. I spoke with my dealer and he said he's had several similar calls and the problem has always been traced back to bad fuel. I've also been told the new low sulfur fuel seems to attract more moisture which also promotes algae growth.

I think I'm going to invest in a www.mrfunnel.com. I know there has been a few threads in the past discussing the Mr. Funnel. I see milkman posted he uses a Mr Funnel.

Don

 

[BXRICK]

I have a BX1500 that's 5 years old now.
The first couple of years I used it to move snow, I had similar issues. It'd run for a while, and then have almost no power, and then sometimes cycle back.
One time, it actually stalled, and I could not restart it. I towed it into the unheated but warmer garage, and the next morning it was fine. Which tells you it's ice/water related.

I have changed two things since then, and neither of them was a filter or pump:
1. I store the tractor in a shed, not out in thge elements, like I used to. No idea if this makes a difference, but it does keep the tractor from sitting with snow drifts on the gas tank, as it used to.
2. I am religious at dumping a lot of treatment into the fuel I buy, as soon as I buy it. I don't use all that much fuel, so it can sit for quite a while.

 

[Tom_H]

The fact that it's running for awhile then doing this makes me think something is floating around in the tank, finally gets sucked down to the outlet port, restricts flow, partial vacuum builds until more fuel can flow in again, etc. and the trash is oscillating at the outlet: open, close, open, close. etc. When put away, the trash finally floats away again. This oscillation makes me think it has to be fuel flow related. A bad fuel pump could be possible. I thought about a bad injector pump, but that would not create this cycling. If it were oscillation/restriction of air flow, that should start sooner. You did replace BOTH of the TWO filters, correct?