756 Gas doesn't get warmed up in cold weather

CDB

Member
My 756 temp gauge never moves when I use it to plow my drive. I plug it in and let it warm up in the barn before I use it. It will sputter and die unless I have it partially choked. It works fine in warmer temperatures. I put a new thermostat in it a couple years ago. I know these 6 cylinders are cold blooded. Can I safely put cardboard, or plastic..or ??? in front of the grill to limit cold air coming in so that it will warm up and run better?
 

Yes, you can safely cover at least 1/2 of the grill opening, and probably nearly all of it. A large piece of cardboard or an empty feed sack will work.
 
Is the flapper valve on the intake/exhaust manifold working? Make sure it isn't stuck and that the spring is working and pulling it closed. Also check the manifolds for cracks.
 
I totally cover the radiators on my tractors in the winter time and still have a hard time warmin' 'em up just doing chores and dinkin' around.

They were built to run at full load during a 105 degree day..all day. So, cooling systems were 'overbuilt'.

Allan
 
There's nothing wrong with the tractor's choke being partly on in the cold weather. If you had an older car or truck with a carb equipped with automatic choke, that automatic choke would be on at least partly, until the engine got up to operating temperature. --Lee
 
I have a gas 460 that is like that and I am in
louisiana ,I use a feed sack and it warms up and
runs well in the winter , I would think that if it
were less than 30 degrees here it wouldn't warm up
enough to run without a little choke for a while.
 
I went out to plow the driveway and tucked a construction garbage bag up on the grill. The suction held it in place. It made a big difference. The temp gauge actually moved up past the C. I was able to push the choke all the way in after a short while. That makes sense about having to use the choke when it is cold until it warms up. I think that the flapper valve on the intake/exhaust manifold is working. I had the exhaust manifold replaced when I bought it because it was broke. The mechanic cleaned up the flapper valve at that time. Thanks for your help.....it made plowing the snow fun again.
 
I understand to block off the air flow evenly, if you're blocking off partly, so you have no imbalance on the fan bearings. I think a feed sack would be ideal, it would let small amounts of air through the weave, and it would be evenly spread across the fan.
 
We always put burlap (old potato sacks) in front of the radiator to help warm them up in the winter. Didn't wantto black off 100% of the air - just wanted to slow the cooling system down.
 
We used to completely cover the front on our MD with a piece of carpet. Never had problems. Temp would not get even half way up the gage.
 
Blocking off most of the radiator inlet helps warm ups. On other tractors, engine side curtains and a bottom cover to direct warm air from the radiator over the carburetor and intake manifold can also help in very cold weather or operating at light loads.
 

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