2001 Yamaha 50HP four stroke.
Yesterday I was making final adjustments to the accelerator pump out on the water after doing a carb rebuild and sync. Almost had it adjusted just right when I pulled the cowling to make one more small adjustment I saw some oil had came out of the airbox...
Pulled the dipstick and sure enough it looked like someone had poured a Wendy's frosty inside... Idled back to ramp went home and flushed the motor (on the flush fitting I did not run the engine).
When I pulled the plugs water came pouring out of the top hole... All of the others were fine. This is why I assume it is the head gasket. I have not performed a leakdown test yet.
Is this a safe assumption based on the water coming out of the top hole? I have changed the oil 3 times and I am going to pick up 2 more filters on my way home today to do a couple more.
I just got an adapter for my compression gauge today and will check it when I get home. Just by putting my thumb over the holes while cranking, compression felt about the same (I know that sounds stupid but I was checking for the obvious bent rod or hole in the piston feel. aka zero compression) Hopefully I caught it soon enough and nothing too catastrophic happened. Any thoughts or advice is greatly appreciated.
Yesterday I was making final adjustments to the accelerator pump out on the water after doing a carb rebuild and sync. Almost had it adjusted just right when I pulled the cowling to make one more small adjustment I saw some oil had came out of the airbox...
Pulled the dipstick and sure enough it looked like someone had poured a Wendy's frosty inside... Idled back to ramp went home and flushed the motor (on the flush fitting I did not run the engine).
When I pulled the plugs water came pouring out of the top hole... All of the others were fine. This is why I assume it is the head gasket. I have not performed a leakdown test yet.
Is this a safe assumption based on the water coming out of the top hole? I have changed the oil 3 times and I am going to pick up 2 more filters on my way home today to do a couple more.
I just got an adapter for my compression gauge today and will check it when I get home. Just by putting my thumb over the holes while cranking, compression felt about the same (I know that sounds stupid but I was checking for the obvious bent rod or hole in the piston feel. aka zero compression) Hopefully I caught it soon enough and nothing too catastrophic happened. Any thoughts or advice is greatly appreciated.