Posted by MARK ROBKE on November 27, 2022 at 09:54:54 from (72.4.15.174):
In Reply to: Re: 2140 Starts posted by rusty6 on November 27, 2022 at 07:11:16:
As you know, a diesel fires when the cylinder temperature is warm enough to ignite the fuel mixture. Compressing the air in the cylinder raises the temperature. Continuously cranking for 30 seconds will raise the cylinder temperature the fastest, even at slower cranking speeds. I agree it should start easily at 40*. But I would not stop cranking after only 5 seconds, unless the battery was failing quick. Your tractor was just getting settled in to a steady cranking speed. I timed your video, and I believe it would have started, with more cranking. All that being said, the biggest reason to plug in a block heater is not just making the engine easier to start, but also to prevent wear on the engine. Smoke is unburnt fuel, and raw fuel washes lubrication off the cylinder walls. A lot of cranking will result in raw fuel in the cylinder-it will probably start, but there will be wear and tear. The reason a whiff of ether is Ok is because it reduces cranking time. Using ether works better if it gets to vaporize-use a warm can, not a 30* can. And the farther away from the intake, going thru the air filter-all helps to vaporize the ether. Mark.
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