HELP ME! PLEASE! Yamaha 60hp FETO Wet Bottom Spark PLug

vandad

Cadet
Joined
Jun 30, 2010
Messages
18
Hi.
My engine runs well, idles well, high/low RPM, everything OK.

BUT I noticed that it burns MORE fuel than normal, it is like 50% more and I noticed smell of unburnt fuel from my engine.

So I opened the hood and there is no sign of leak, from hoses/filter/ etc. and I decided open the spark plugs!

The bottom plugs was TOO CLEAN and the others were normal. I changed the bottom one with another plugs and it got cleaned again!!!!

I disconnected the lid and it spaked on the body of the engine so I assume the electric bit should be OK. I also noticed unburnt fuel is throwing out of exhaust...

WHat could this be?
 
Top