Knocking rattling fast itle, 25 merc

[RICHARD PEARSON]

SLOW TO FAST ITLE OR RUNNING VERY FAST ITLE A RATTLE KNOCK SOUND COMES ON SLOWLY THEN WILL SOMETIMES INSTANTLY QUIT THEN COMES ON GRADUALLY AGAIN.. MORE WHEN WARMED UP REAL GOOD.. ???????? <br /><br />After a slight warm up the rattle, knock sound comes on slowly as I go out the canal at a fast itle. Then it may instantly quit, then in a couple of minits it will start gradually to rattle. The warmer it is the more it happens.

 

[Solittle]

Re: Knocking rattling fast itle, 25 merc

Richard - I see that you joined us recently - a big welcome.<br /><br />A couple of things - First how about just one post for the same problem? Second you post will get more attention if in the Merc section. And last please don't use all caps (your other post). They are hard on the eyes & it is called shouting.<br /><br />On the problem - Start with a compression test & post the results.

 

[Mod2]

Re: Knocking rattling fast itle, 25 merc

Moving to Mercury/Mariner Repair Forum. I also included your original post.

 

[RICHARD PEARSON]

Re: Knocking rattling fast itle, 25 merc

120-123 lbs