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Ford 860 - Loss of Power

W

WhiteStar

Member
I have a Ford 860, converted to 12 volt.

Tractor has run fine, went to drive it the other day and noticed that no matter how much throttle I have her, she wouldn't rev up like she had in the past. Hooked the brush hog up and she can't seem to power it when mowing.

I stopped and checked the fuel sediment bowl, good flow. I actually replaced the spark plug's and wires, good spark.

Next was a compression test, but I have to get a test kit. Anything else to test while I order a compression test kit?

Would you think it was compression or fuel related?
 

I'm thinking fuel problem. Check flow through carb out bottom plug.

If it's set for very long, and even if not, I'd look seriously at cleaning and possibly even rebuilding carb.
 
(quoted from post at 14:33:09 05/08/17) Did you check your points and gap?
Click to expand...

I replaced all the spark plugs (did not check gap on new ones), also replaced points, did not notice a change either way.
 
My 860 did same thing a few years ago. Checked fuel and spark...they
were fine. Wound up being a really dirty/clogged up air filter. I
cleaned up the oil sump/filter and she started right up and ran fine.

HTH
 
Could be a bad spring on the gov assembly. One way to check is grab the gov to carb linkage and by hand see if you can make it increase RPM. If you can then you have something wrong with the linkage. If you cannot make the RPMs go up doing that then likely to be a fuel or air problems. Does choking it hurt or help?
 
(quoted from post at 16:59:07 05/08/17) My 860 did same thing a few years ago. Checked fuel and spark...they
were fine. Wound up being a really dirty/clogged up air filter. I
cleaned up the oil sump/filter and she started right up and ran fine.

HTH
Click to expand...


Winner, winner, chicken dinner.

Dang, that's embarrassing to show how I've neglected that part of PMCS.
 
When you clean it, be sure to clean the accumulated debris from the down tube.

I've seen down tubes closed to 1/2"-3/4" or so with accumulated oiled dust.

Dean
 
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