3.0 merc making ticking sound under load

Shawn79

Cadet
Joined
May 22, 2005
Messages
13
does anyone no what might cause a unconsistant ticking sound only when under load sounds like its coming from the carb is there anything in there that can cause a noise like this
 

Trent

Captain
Joined
Nov 17, 2001
Messages
3,333
Re: 3.0 merc making ticking sound under load

I think your hearing the "shutter" for the exhaust. Its normal. It got me the first time I heard it 25 years ago...
 

Shawn79

Cadet
Joined
May 22, 2005
Messages
13
Re: 3.0 merc making ticking sound under load

i am not realy sure i no what the shutter is do i have to replace it or repair it???any info would be apreciated
 

Trent

Captain
Joined
Nov 17, 2001
Messages
3,333
Re: 3.0 merc making ticking sound under load

If its the shutter its normal and you should do nothing. Im not their. Make sure its not the valves. The 3.0 will make a tapping sound from the shutter under different loads. Look at the picture. Number 6 is the exhaust shutter.<br /><br />
43.gif
 

Dunaruna

Admiral
Joined
May 2, 2003
Messages
6,027
Re: 3.0 merc making ticking sound under load

Last year someone posted an engine noise topic, he included a wav file attachment, it made the diagnosis so much easier.<br /><br />Is that something you can do Shawn?<br /><br />Aldo
 
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