mercruiser 3.0l clicking or poppin in coupler area

[snake91876]

Newly rebuilt fresh 3.0l merc, i had a noise i posted that was at high rpms sounded kinda clicking or ticking from rear of motor. at idle around 800 rpm or so i get a clicking or popping every so often when i listen near coupler. gimabal is new but i used old coupler and u joints, i greased joints they moved really free, i also have a good bit of boat vibration at low rpms starting off but it goes away by say 1500 rpms or so and is smooth. what are the signs of a bad coupler or u-joints im kinda hearing a knocking thud every so often at the coupler area while running at idle but it may not be anything. the clicking is raising heck at wot

 

[snake91876]

Re: mercruiser 3.0l clicking or poppin in coupler area

removed my outdrive to eliminate possible noise from ujoints and gear case, still get a popping of clicking , tingling noise when i rev it hard, would the coupler make noise without a driveshaft in it also i rechecked my alignment and should the tool bottom out by hand or do you have to tap it in

 

[brunolund]

Re: mercruiser 3.0l clicking or poppin in coupler area

loose inspection cover???? seen it in a truck once, but never yet a boat.