2014 merc/volvo 3.0 valve adjustment

Gearcrasher

Recruit
Joined
Apr 27, 2016
Messages
1
I have always adjusted 3.0 valves with 3/4 turn of adjuster. On a couple of new boats I lose compression when doing this. Have specs changed? Or have I gotten some bad copies of this engine?
 

alldodge

Moderator
Staff member
Joined
Mar 8, 2009
Messages
43,238
Howdy

It's still 3/4 turn once zero lash is found. Many folks mess up by tightening until the turning stops, then give the 3/4 turn. You turn the push rod in your figures to start, but the important move is the up/down movement. Once all up/down movement is found this is zero lash. The push rod can still be turned at this point. So long as the lifter has not collapsed your good
 
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