No compression in #3 cylinder.

BRTate

Seaman
Joined
Jul 6, 2011
Messages
50
I have asked multiple questions on this boat, finally found the main problem I guess. I should have checked compression a while back but I didn't. No compression in #3. All other cylinders are +\- 5 lbs. or so of 110 lbs. but nothing in #3. Odd part is that the boat cranks and runs good until you load it up. Just me planes out and runs same top end. Add a few people or try to tow a board takes forever to come out of the hole. Very weak. Sitting at idle no noticable miss. Has a strong smell of gas from the exhaust. Want some opinions, is this a full rebuild period or do I have some other options to check out first. I have not started anything yet. Was mad when I parked it and haven't wanted to look at her yet. Thanks
 

alldodge

Moderator
Staff member
Joined
Mar 8, 2009
Messages
42,548
I would pull the valve cover to see if its a bent valve, push rod, rocker.
 

harleyman1975

Ensign
Joined
May 12, 2003
Messages
959
Try rechecking compression 110 is an old worn out dog but it may be higher if you do it with throttle wide open and you crank it 5 revolutions per cylinder. want to see closer to 140-160.
 
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