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860 gas problem

J

John Weber

New User
My 860 will run for a while and then cut out. If I pull the out choke briefly I can sometimes keep it running. I have drained the tank and taken the gas line off. I blew air into the tank to see if that was obstructed. I have a new gas filter on it. I did have a small obstruction in the line but that is cleared. Yet when I put it all back together I still have the problem of it cutting out after 10 to 20 minutes of use.
 
I am willing to replace the condensor inside the distributor. What I see is no gas flowing into the gas filter. Not sure how replacing the condensor will fix. Sorry if I was not clear enough in my original post/question.
 
So you have an in line gas filter on it right??? Would you believe that is your problem>>> The only filter you need and should have is the sediment bowl and screen. In line filters or most of them are made for fuel systems with a fuel pump that has 7PSI plus pressure and a gravity flow system has maybe 0.5 PSI pressure so a little clog means no fuel. Bet if you remove the filter your problem will go with the filter. I fix many many many of them problems and I charge a case of beer to throw them away and have gotten 20 plus cases
 
Your post makes it sound like your fuel line obstruction has been cleared. My 851 was doing exactly the same thing as your 860 and it turned out to be a bad condensor.
 
Same problem on my '55 850 was cured by cleaning the sediment bowl and replacing the screen. If it occurs again, clean the tank, lines, etc. again and go from there.
 
I've seen those filters cause trouble too, just like Old said.
If you can see you're not getting fuel, it should be easy enough to stick a piece of steel brake/fuel line in place of the filter to test the theory.
 
There's a very simple way to isolate fuel flow concerns: Remove the drain plug on the bottom of the carb - Let it run long enough to fill up a quart container. You're looking for a steady stream, not dribbles.
 
What happens is that gas is not flowing into the filter. If I wait a while there is flow but slow. The suggestion of a sediment bowl and screen because of gravity may be the answer. There is a rubber tube from the gas tank to the carburetor with a turn off valve and then the gas filter in the line before the carburetor. Can I switch to the sediment bowl with this set up. Where would I get the sediment bowl and screen?
 
John --

Click on Tractor Parts on this site, click on Ford/New Holland, select "800" as your model, select Fuel System, scroll down. You'll find the sediment bowl assembly for $22.95. I had the same problem on an early 4000, eliminated the fuel filter, and haven't had another occurence in almost five years.

Good luck.

Ray
 
occasionally a condensor can open when hot. when it does this the points burn.. and if you see burned poitns you need a new condensor.

very rarely, you get a condensor that will short with heat.. and this will kill spark with no burnt points.

esy way to check.. at moment of stall.. check spark.. if you got spark.. it ain't the condensor..

so far I'm eharing fuel issues.

I'm not a fan of inline filters.. even the ones rated for 100hp small engines restrict flow.

I have a work tractor I leave up in the woods and it has a non oem tank, thus no tank screen. that one I run a large hi flow filter.. and even it, at idle.. will stall due to low fuel flow.

soundguy
 
As usual, the help here has been outstanding. I also have a non oem tank. As I noted there is a rubber hose from the gas tank to the carburetor with a turn off valve and the gas filter in the line. Looking at the picture of the sediment bowl I am not sure how to attach the rubber hose to it. Do adapters screw into the in and out allowing for connection to the hose?
 
Sounds like some one has really screw your carb system up. On those the sediment bowl goes right on the carb with a banjo bolt and yes you can buy the whole sediment bowl assembly for this site and or nnalert. So does removing the gas cap help any?? If it does then you could have more then one problem
 
John --

The rubber hose is something many if not most on this board would advise replacing with all-metal lines. It's more prone to leaks, cuts, tears, etc., and leaking gas is quite flammable and. . .well, you know. Others, including me on one of my tractors, have rubber and don't think alot about it. If you want to keep the rubber, you'll need to come up with metal fitting and at leat stubs of tubing matched to the size of your hose so that you can clamp your hose on.

Good luck.

Ray
 
I have been told that about the rubber hose but thanks for the reminder.
Could I attach the sediment bowl right at the carburetor? This seems like the easiest option.
 
(quoted from post at 16:52:21 07/10/12) I have been told that about the rubber hose but thanks for the reminder.
Could I attach the sediment bowl right at the carburetor? This seems like the easiest option.
Click to expand...
nless you have some kind of after-market carb, that is where the bowl should be. Pretty much like this 960:
carb_on_960.jpg
 
I think the sediment bowl connected to the carburetor is the way to go. The one I see sold at this site does not have a turn off knob. That seems like a good idea. I do have a turn off valve but think having the filter and turn off all in one would be nice.
Given all the help I have received I am probably being picky. However, any idea where I can get a sediment bowl that would work for my 860 that has a turn off knob?
 
(quoted from post at 08:30:05 07/11/12) I think the sediment bowl connected to the carburetor is the way to go. The one I see sold at this site does not have a turn off knob. That seems like a good idea. I do have a turn off valve but think having the filter and turn off all in one would be nice.
Given all the help I have received I am probably being picky. However, any idea where I can get a sediment bowl that would work for my 860 that has a turn off knob?
Click to expand...
on't know of one for your tractor, but you could 'roll your own', like Hobo did below.
600_fuel_cutoff1.jpg
 
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