Steiner 430 MAX Diesel, Shaking itself to Pieces!

[Industrial Toys]

This machine with 450 hours has always had a rough idle. But bumping up the RPMS just slightly, usually smoothed it out. Now it seems that I have to go to a really high idle to make the engine stop shaking.

I checked the motor mounts and they appear fine. I looked at the fan, thinking maybe I lost a blade or something, although I think I would have noticed that.

Any ideas? It's a Kubota D722E Engine.

 

[Raw Dodge]

That's pretty normal for the diesel steiner..if its getting worse,but smooths out at high revs,I'd look at the injectors ,maybe run some injector additive /cleaner thru it, and see if it helps at all....does it start and idle on all 3 cylinders right away or does one take a long time to come to life?Those are not bad engines but they are working really hard in a Steiner,so they don't usually last that long,which is atypical for Kubota diesels they usually last a long time. ..