2020 T394 engine knocking noise

[bdl67]

I have a 2020 T394 with a Yanmar engine. The tractor has 304 hours with proper maintenance. It's making a hammering or tapping noise and it sounds like it's coming from the bottom end but it's hard to locate. The noise stops when the engine is hot but if you let it sit for 30 minutes it'll come back. I tried attaching a video but I'm not able too.

 

[5030]

I'd say a crank thrust washer has failed Couple Yanmar forums on the net where you can get a more definitive reply.

 

[bdl67]

I'd say a crank thrust washer has failed Couple Yanmar forums on the net where you can get a more definitive reply.

thanks! I have been researching but I can't find anything except Yanmar in boat applications

 

[5030]

Try www.tractorfourms.com they have a Yanmar specific sub forum.

 

[bdl67]

Shared album from Brad ð¸

Tap to view!

photos.app.goo.gl

 

[bdl67]

Try www.tractorfourms.com they have a Yanmar specific sub forum.

I posted a video. Hopefully it works

 

[TractorTYMe]

You should still be under powertrain warranty with that one.

 

[bdl67]

You're right it is. I spoke with the dealer today. They thought the sound was valve related. It's going to the dealer tomorrow. My dealer has 2 shops 2.5 hours from me in either direction, i chose the one that could get it in right off.

 

[bdl67]

My dealer's (Scotts Recreation) mechanic is quite positive just based on the sound and symptoms it's a bad injector. I'm really happy how they treat me and I'm confident having them as my dealer. I will update when fixed which is estimated to be a week from monday.

 

[TractorTYMe]

That would be GOOD news, AND a plus having such a good dealer.