[RogerDeS]

Newbee to forum...

I have a 1986 1200 with good compression on the right side and very little compression in either cylinder on the left. It only has 3200 miles on it but, sat in a garage for 7 years. Is it possible the valves are bad? If so would carbs being out of sinc cause this? Easy way to sinc when I replace valves and timing belts.

 

[Cantankerous]

First of all, welcome to the forum.


The carbs wouldn't cause the problem. I believe the problem is probably rings seized up in the pistons. Was the bike stored on the side stand?

 

[RogerDeS]

It was stored on the Main stand.