1979 evinrude 100 won't reach full rpm's

boots101

Cadet
Joined
May 2, 2012
Messages
15
Engine ran great up until recently. Starts fine, idles fine. At WOT it barely planes off once it's warmed up. Water seems to be circulating ok. Any ideas would be appreciated.
 

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
First do a compression test on it. If that's okay do a cylinder drop test on it.
 

boots101

Cadet
Joined
May 2, 2012
Messages
15
Did the compression test-all 4 at 90+ and all about the same. Gonna do a drop test next. Will be back
 
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