Mercruiser 2.5 ticking sound

[Scott06]

I've got no tools to pull the crank pulley so can't look at the gears atm, but feels like that would be my next step(?).

you could probably get an idea of the back lash in the timing gears by turning the crank back and forth and seeing the delay in either rocker movement or the rotor in dizzy turning.

Also did you run it with the block circulating pump belt off. Possible if the bearing in it is bad it could make noise

 

[Scott Danforth]

you know that flat tappet cam lobes and lifter should not be mixed and matched (they mate for life)

 

[Scott06]

you know that flat tappet cam lobes and lifter should not be mixed and matched (they mate for life)

trying to read that sign in the rear view mirror...

 

[dirkg]

So after going through the troubles of replacing the camshaft I'm basically back at a point where all lifters, rods, valves and lobes are married up again. The gears on the cam definitely had some beating (see image attached for the ones interested) so I guess I for sure hasn't hurt (at least I had fun and learned sth new ).

After putting it all back unfortunately the issue wasn't resolved and ironically the only thing left I didn't do was the distributor. Replaced that one and guess what, issue seems to he solved.

Happy times, except that I have a new sound and it makes me wonder whether my "learning" accidentally killed a bearing or sth. See the video:

.

Does this sound familiar to anyone?