Hello
I'm looking at a 1566, and was about ready to buy it until we tried to start it and nothing at all happened. We cracked fuel lines at the head, and have fuel there. We can get it to turn over with the starter by jumping the terminals with a screwdriver, but it won't fire or even smoke. We even tried helping it with some ether, but it still didn't fire. I had new battery's in it, so it shouldn't be a cranking speed problem. I'm out of ideas. What do you guys think?
 
It should've fired easily at 34 degrees.

Those IH 400-series engines are good cold starters if everything is working even close to right.

The 1066 only ever got started during the winter to run the generator or go on "rescue missions" when the spreader tractor got stuck. That tractor would always fire up even down into single-digit temperatures, with nothing more than a quick puff of ether, if that.

Unless you can get the tractor for scrap price plus the value of the tires if they're any good, walk away.
 
Ethan, Always look for the obvious first, know it sounds dumb, but make sure the throttle is correctly set so it is not in the Kill position. could be that is is hung up there.
If you are spinning the engine smartly, throttle is not in the Kill position and not getting some smoke there are probable Injection pump problems. Have the man adjust the price accordingly, or walk away.
Hope this helps
Later,
John A.
 
Don't know how familiar you are with IH tractors but the 66 series tractors have a safety switch on the clutch. You have to have the clutch fully depressed for the starter to engage.
 
If no smoke,the throttle is in the 'stop' position;the thing was run out of fuel;the fuel system has lost prime(could be bad) ;the pump is shot(worse);The fuel filters are plugged,or frozen.Block of ice in the tank plugging the suction.These things are something to look at.....
 
When I pulled the air cleaner out it was plugged off with silt. Even when I pulled both air cleaners out it still would not do anything. I had the throttle about half open.
 
The pump advances when you open the throttle, they start way better full open. I learned that JD's are the opposite, they advance til it gets oil pressure, and giving it any throttle you lose the advance and they start like crp.

But it should have fired off with the ether, if you shot it in with the air filters out.

If there was dirt in the housing around the air filters, it could be the engine is damaged.

You are getting good flow out of the fuel tank?
 
This time of year it could have had the fuel gel, should have done something off the juice though, although I have seen tractors not do anything off ether before to.... If your having fuel at the injectors then I would make sure air is completely bled out of the pump.... give it some ether and bring it to WOT.
 

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