YM336D bad knocking engine

[murnere]

Altona, All is resolved for now, enough that I can get back into more enjoyable projects. Thanks.

 

[HoyeTractor]

Does anything change when you loosen your injector lines now? Does the tractor start easily?

 

[murnere]

Hoye, I actually only loosened the #2 injector to bleed it. The tractor started easily even as I was bleeding the injector. I have not loosened #1 or #3. I'm leaning toward removing the valve cover to see if something got loose there.

 

[winston1]

Hoye, I actually only loosened the #2 injector to bleed it. The tractor started easily even as I was bleeding the injector. I have not loosened #1 or #3. I'm leaning toward removing the valve cover to see if something got loose there.

Not a hard job and probably worth it.

 

[clemsonfor]

If it's still knocking that cyl is not fireing but sounds like you realize that. The injector is getting enough fuel from the pump right? Did this all of a sudden develop on this tractor? Before the new injector that is. I can't remember at this point.

 

[murnere]

The knocking developed very suddenly, in my opinion.
After replacing fuel lines, filters, fluids and re-coring the radiator I slowly started working the tractor. I idled it for an about a half hour and then shut it off for the night. The next day I drug a chain harrow around my fields for about an hour and then shut it down. The next day I ran a brush hog for 2-3 hours. All of those chores were done easily.
The next day I brought the tractor around to give it a bath (I didn't get water anywhere near the engine) so I could take some pics to show my father. When I started it up after the bath, it had the knock. A few weeks later I changed the injector out and now it knocks and smokes.
As far as the injector getting enough fuel... I don't know. Fuel comes out of the line when I loosen it, but I don't know what "enough fuel" is?

 

[murnere]

Winston, I am hoping it is pretty easy. But as I've mentioned before, I do better if I see it on YouTube beforehand.

 

[winston1]

Member Domush posted this thread on his 336. About the most patient fellow around. Long long thread but if you have time to read a lot to be learned. He had other threads also. https://www.tractorbynet.com/forums/yanmar/235280-ym336d-started-knocking-loud-while.html

 

[clemsonfor]

Member Domush posted this thread on his 336. About the most patient fellow around. Long long thread but if you have time to read a lot to be learned. He had other threads also. https://www.tractorbynet.com/forums/yanmar/235280-ym336d-started-knocking-loud-while.html

Old Dolmush. Wish that guy was still around. That was a very long and entertaining process that about involved everyone here to help him get that tractor right. I believe that is where we lost carguy. Someone challenged his opinion or something saying he didn't know what he was talking about. He is a professional mechanic. Not a tractor mechanic but these are well within the relm of his being able to work on and give advice. He got tired of it and just quit posting, saying he was tired of having people challenge what he said and why or telling him he didn't know what he was talking about .

Winston I don't remember, did domush have a knock from an injector? I remember he rebuilt the whole thing.

 

[winston1]

Best I remember he originally just cleaned it up with new fluids, made a wooden dash and not sure what else. Then not long after that he let it get low on oil and ended up doing a complete overhaul.