engine knock

ISLAMORADA

Recruit
Joined
Oct 25, 2004
Messages
2
have a 99 evinrude 150 with low hours- started knocking at idle rpms- smooths out with any throttle - suggestions on problem? thanks
 

jy118lfd

Chief Petty Officer
Joined
Jun 18, 2004
Messages
497
Re: engine knock

Check the prop nut torque and fitment on the splines
 

Dhadley

Supreme Mariner
Joined
Feb 4, 2001
Messages
16,978
Re: engine knock

If thats not it see if you can isolate it to one side or the other of the powerhead. Port side perhaps?
 

DHPMARINE

Captain
Joined
Dec 16, 2003
Messages
3,688
Re: engine knock

Knocking at idle.... try pulling one plug wire at a time to see if you can isolate it to one cylinder. (as said above)<br /><br />Also,when the engine is OFF,push forward,back,port and starboard on the flywheel.<br /><br />Your upper crank bearing could be going south.<br /><br />DHP<br /><br />Dhadley may be on to something here.
 
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