Compression on a k 75 - BMW Luxury Touring Community
 
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post #1 of 2 Old Dec 20th, 2012, 1:55 pm Thread Starter
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Compression on a k 75

Did a comp check on my 87 k75 with cold motor and throttle closed all 3 cyl were 115 psi. I then warmed it up and checked with throttle open , all 3 were 190 psi. Just wondering if this seemed normal.
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post #2 of 2 Old Dec 20th, 2012, 3:14 pm
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Re: Compression on a k 75

It's the throttle position that made the difference.

Compression checks are supposed to be made with open throttle.

On an Airhead FWIW it's easiest just to take the carbs off.

Kent Christensen
Albuquerque
'12 R1200RT, '02 R1100S, '84 R80G/S
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