Posted by FarmerZeb on April 16, 2013 at 07:15:23 from (24.166.169.69):
In Reply to: ford 800 posted by Nelson1962 on April 15, 2013 at 17:17:50:
First - Check your entire ignition system five times. If you don't have an in line spark check tool get one. Check every cyl. Check ignition switch and circuit to the coil (paying special attention to the connection from the coil through the dist housing to the points). Clean and gap plugs. Check points condenser and distributor timing.
Second - clean the entire fuel system again and verify fuel flow rate at carb
Third - If it were me I would do a compression check just to see how healthy or un healthy an engine I am dealing with. (I would do this during step 1 while I already had the plugs out)
With that said here is my experience with carbs.
I installed a zenith replacement carb on a JD last year due to physical damage to the MS carb and it worked very well once adjusted. The adjusting took some time and a good ear. There should be a power jet adjustment and an idle adjust on the carb. The adjustment process was time consuming and frustrating to get the carb to work with the tractor through all power ranges. But it worked well in the end. If at all possible rebuild your original carb if there is no physical damage to the components. Zenith makes a good carb but it is most likely not adjusted to your tractor out of the box. The manual that came with the cab should give you base line adjustments on for the carb but you will have to tune from there.
Did you replace the carb due to flooding? Flooding is very common on these tractors and is why Ford included a fuel shut off on the tank. The old carb might have only needed a needle valve, seat and float adjustment.
-Paul
This post was edited by FarmerZeb at 07:49:40 04/16/13 2 times.
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