Pistions on a Force 125

larrywcc

Cadet
Joined
Jan 16, 2010
Messages
9
I have a '85 force 125. Just bought the boat, starts right up without problems. When we had it on the lake it ran well then after 1hr top speed only went around 30 or less. On the way back lost more power. Did some research on here and tried many things but every cylinder only went to 30lb
Pulled the head off but are the pistons suppose to sit very tight? I can move the pistons around but they do not hit the walls. All the walls feel very smooth so no marks. So not sure if it is just the gasket went bad or the rings need to be replaced and or pistons? Really do not want to take it in to the shop unless I have to. Also, the boat has been sitting, but starts on the click of the key.
Thanks.
 

Daviet

Fleet Admiral
Joined
Sep 24, 2008
Messages
8,958
Re: Pistions on a Force 125

You might get some better advice if you posted on the merc forums.
 
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