YM336D - Started knocking loud while tilling

Vern · Apr 15, 2012

Good Job.. I have been pulling for you.

clemsonfor · Apr 15, 2012

Domush said:
Well, I put it all back together and I could swear it blew another head gasket! I made a long video of it running. It sounds like it blew again somewhere around the 1 minute mark.

Tractor rebuild startup - Third time's the charm.. hopefully - YouTube

I'm at a loss as to what more I can do. Unless the valves are not opening when they should, I don't see anything else which even could be wrong with it.

Not so sure, dosent look like what happend in the bottle the first time. When its cold from cold start up can you see bubbles in the bottle?

It sounds like an injector quit firing.

Neat 1500 · Apr 16, 2012

it definately sputtered, died down a touch then came back up. possibly the pump or and injector playing up or some crud dislodged and was ingested? it did smoke a touch when this happened but appeared to sort itself. if you are happy with its running now give her a bit of work to do :thumbsup: dont pussyfoot around with her either

jonyyuma · Apr 16, 2012

That sounds good, I would not worry about the smoke in the exhaust..glad you have it going, you defintely deserve a break for a spell? Check the oil and the valve lash..

Car Doc · Apr 16, 2012

Well it sounded like the compression was at least equal this time from the little bit we heard while it cranked before firing up. :thumbsup:

rmully · Apr 16, 2012

Take a breather and enjoy your tractor.... just run it, put on your ipod and don't listen to it ...just drive it.

bruce1966us · Apr 18, 2012

Domush said:
Well, I put it all back together and I could swear it blew another head gasket! I made a long video of it running. It sounds like it blew again somewhere around the 1 minute mark.

Tractor rebuild startup - Third time's the charm.. hopefully - YouTube

I'm at a loss as to what more I can do. Unless the valves are not opening when they should, I don't see anything else which even could be wrong with it.

Sounds like an injector is acting up. That will make an engine sound like it's coming apart.

grainger12002 · Apr 19, 2012

Hi Domush
Just wondering if you had a chance to run the tractor a bit ?

From Connecticut !!

Is the loader you saw off a 3cyl ford or a 4cyl ford ?

joe swanson · Apr 22, 2012

Sometimes my equipment (336D) and others suffer from too much maintenance and too much knowledge. I agree with the others , run it and enjoy. 336D is a great machine. I've had mine 5 years and it is tops.

Joe

Domush · May 2, 2012

Sorry for the slow update, everyone. Life has been busy and I just finally got around to borrowing an actual implement to test the PTO with (I don't own a single implement yet!). I borrowed a 6' finish mower and mowed my and a friend's yard with it.

At first it was doing the clackitty-clack you all can hear on the final startup video, but after mowing for a while I noticed the clacking had gone nearly completely away. It was beginning to sound like a modern kioti engine. The exhaust note (that big, v-8 chevy truck-like note) is now prominent (I never even heard it before the rebuild) and the smoke which followed me all the way to my neighbor's house is now gone even under load! It now has that slight smoke when I throttle it under load, but never any other time (that I can easily discern, at least)!

I think this finally completes my rebuild thread. The tractor starts immediately, no longer smokes, lost that awful clacking sound and pulls a 6' finish mower in gear 6 (out of 9) without a single hesitation!

Next up, my "Front end loader adaptation and install" thread!

Photo lovers, don't despair, I have some random pics for your eye candy enjoyment!

A horse head I made for my local horse club (stainless steel)

Brutus and Maggy

What a moth in Kentucky looks like!

What a car in Kentucky looks like

What people in Kentucky call "hunting", then proceed to tell you "I bow hunt for the challenge". :confused2:

Lexington, KY horse ranch -- Otherwise known as "My future home after winning the lottery I never play" :drool:

Lastly, a HUGE thank you to everyone who has helped me out in this thread. You all made this rebuild a great learning experience, and made a fellow Yanmar owner a smarter guy for it.

Cheers!