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Re: Compression Testing...

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Tom in MO

03-05-2013 11:04:00

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Thanks, all - that"s exactly what I was looking for. (Especially the numbered steps, ARK, since that"s how my brain works best.)

The tractor runs fine, and I don"t have any reason to suspect that I have a major problem. (Tiny coolant leak at the head gasket, and a few bubbles in the radiator, as discussed in another thread.) I guess I"m just curious.

One (probably dumb) question: why do you open the throttle all the way?

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03-05-2013 11:22:28

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 Re: Compression Testing... in reply to Tom in MO, 03-05-2013 11:04:00  
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So that the air going into the cylinder is unrestricted. It's another means of getting consistent results from cylinder-to-cylinder.

BTW, there aren't any dumb questions, but I sometimes give dumb answers. :oops:

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Tom in MO

03-05-2013 11:39:19

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 Re: Compression Testing... in reply to Ark68SS, 03-05-2013 11:22:28  
Thanks, Bill - that makes sense.

Regarding unrestricted airflow: it seems like I read somewhere (probably the Internet!) that you unhooked the carb or the air intake to get full airflow?

That sounded a little extreme, and that was one of the reasons I was looking for a clear, concise description of the procedure.

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