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Discussion Starter #1
Hi all,
I have 1750 that idles roughly when removing the air filter and blocking air from each cylinder with my hand 1,3&4 effect the idle but number 2 has no effect at all. Additionally there seems to be little to no suction through the carb on #2.
Number 2 spark plug fouls up some but the number seems to come on a bit better what the revs are increased
I’m at a loss to what may be causing this.
Any ideas on what I should look for next?

Thanks Phil
 

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901 Posts
Try to blow compressed air into cyl. #2 when it is at TDC on the firing stroke. Could be a burnt valve, or better yet a leakdown test.
 
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