Yes I spent my afternoon with my finger in the rectum of my 1GM10
I read quite a few posts where it was recomended to check the mixing elbow
and replace after 500 hours. I decided it was time.
I have quite a bit of space around the engine
. I went to work
draining the water muffler
and then removing the exhaust
hose from the elbow
Inside the hose was a loose metal pipe. WTF? was my thought.
I managed to remove the hose and pulled out the tube. It seemed to be corroded and broken at one end. I was able to get my head
around and look up into the elbow. Looked fine on the inside no carbon.... but what was the tube.
I decided to remove the elbow... replacing a gasket
never costs to much. It came off easy. Then I realized that the pipe that was in the exhaust
hose was the inner sleeve of the elbow.
So now its time to buy a new exhaust elbow.
The exhaust elbow connects directly to the head
on a 1GM10
. It was caked with carbon. In order not to damage the head, I spent the afternoon carefully scraping the carbon and brushing it out with my finger. (I didn't want to chip carbon into the cylinder)
How carefull do I need to be? I can see the exhaust valve stem.
I would like to get a drill with a wire brush/wheel on it and clean it out. I dont want to remove the head. I don't want to damage the exhaust valve or knock carbon into the cylinder. Should I be concerened?
Oh and by the way where is a good Yanmar
Dealer online that will ship to Vancouver
. Yanmar parts
cost a fortune up here compared to the States.