Posted by KEH on January 05, 2008 at 06:58:32 from (209.213.26.2):
Might be a subject for discussion now that winter has come.
Some early diesel tractors, such as the 4 cyl Fergueson 35, used glow plugs. Shortly they were replaced by the 3cyl Perkins direct injection diesel which had a good reputation for starting in cold weather. Don't know if it had any other cold start aids.
Early IHC diesels started on gas, then switched to diesel after warming up. Their disadvantage was that the head design which allowed this was complicated, expensive, and probably no longer in production.
Many early diesels used a gasoline pony motor to start the diesel. Since a main part of starting a diesel is getting the motor to spin fast, the pony motor would hold up to turning the diesel better than an electric starter. Procedure for starting my cousins old D 7 Cat is to get the diesel spinning good, then spray a little ether.
Saw a neighbor start an 8000 Ford cold and it had a ether can in a fixture on the dash to inject ether.
Other Fords have a manifold heater which heats the air in the intake manifold. The Long tractor I have has this system and I have encouraged the process by using an electric heat gun to warm the manifold.
Kubotas that I am familar with use glow plugs and don't have the direct injection design. Not sure why they don't use direct injection on a farm tractor since the additional pinging noise is not such an isse on farm tractors. Some other Asian tractors use this system also.
For curiosity, I would like to know the cold start systems on later tractors, such as the 70's and 80's IHs, JDs, and ACs. I'm also curious about cold start aids on present day tractors. I'm told that some new tractors use the common rail injection system. Is cold starting any better on them?
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