Water in booth clinders, Yamaha 9.9 2-stroke 1984

[vgurra]

Hi,<br /><br />My Yamaha 9.9 2-stroke 1984 started to sputter at low rews and got a bit less max power. Found booth plugs to be soaked in water...<br /><br />Any ideas on where to start looking on this particular engine to find where the water is entering the cylinders?

 

[Jammu]

Re: Water in booth clinders, Yamaha 9.9 2-stroke 1984

I think that the cylinder head is gone. That's a problem in these engines. Take the head off and you can see the problem. The water is coming in to the combustion chamber. I've seen many of these. Give your e-mail adress, so I can send you a picture of a head to You.

 

[vgurra]

Re: Water in booth clinders, Yamaha 9.9 2-stroke 1984

Thanks a lot, will check that head right asap!<br /><br />I asume reparing a head is normally not an option or...?<br /><br />Yes, pls do send pics! As this forum does not seem to support private messages it seems I have to include an adress here...<br />Take away the numbers to get the adress: (vain attempt to avoid the worst spam flood...)<br />45gurr4av<br />442450 40512435 10425<br />345@<br />hotmail.com

 

[vinney]

Re: Water in booth clinders, Yamaha 9.9 2-stroke 1984

Agree the older Yamaha's the material the blocks and heads are made of don't hold up over time. The new engines have anodes in the block and heads.I have seen cylinder head failure many times on older Yamaha's. Hole from water jacket into the cylinder dome.(water in cylinder/s)