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Old 01-16-2009
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20 degree engine start

Just thought I'd share this for the folks who will appreciate it.

20F is really cold for the locals here in NC.

I went to check on her at 0530 on the way to work. THe batteries are not as good as they could be but by disconnecting the compression on one cylinder and advancing the throttle a lot I was able to start the 30 year old Yanmar 2QM20 without glow plugs.

I figure that's the bottom end of what I will ever ask this engine to do.
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Old 01-16-2009
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How did you deactivate one cylinder?
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Old 01-16-2009
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A touch of ether helps diesels start also... But be careful in the usage of ether, because your engine will develop an ether starting habit if you use it all the time.
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Old 01-16-2009
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How did you deactivate one cylinder?
Each cylinder on a Yanmar has it's own decompression lever.
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Old 01-16-2009
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ether causes pre compression ingnition burning holes in pistons
never use ether
is you need a supplement use wd40
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Old 01-16-2009
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Quote:
Originally Posted by hertfordnc View Post
Just thought I'd share this for the folks who will appreciate it.

20F is really cold for the locals here in NC.

I went to check on her at 0530 on the way to work. THe batteries are not as good as they could be but by disconnecting the compression on one cylinder and advancing the throttle a lot I was able to start the 30 year old Yanmar 2QM20 without glow plugs.

I figure that's the bottom end of what I will ever ask this engine to do.
I have the 2QM20F and I'm always amazed how easy it starts.
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Old 01-17-2009
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If your compression is good, and your oil has not thickened to treacle and emasculated your starter motor, the diesel really should start even when that cold. If compression is good, the temperatures at the top of the compression stroke are fierce, and the ambient temperature does not matter much.

Pls don't use narcotics to start the motor. It gets addicted to them very readily, then it's a diesel junkie.
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