Gray smoke

[Gdubs]

Rebuilt d902 3 cylinder engine, new injectors/washers, new good fuel/filter, air cleaner, head/gasket, cleaned/rebuilt injector pump (used existing shims)

billowing gray smoke on startup and thereafter, and a slight rattle around the #3 cylinder area of engine (used stethoscope but could not pinpoint location).
New oil and filter a week ago
Has good power

aby ideas of what is causing this?

disclaimer: governor and idler bolts are adjusted to get it running, but not sure how to adjust to get it smooth

 

[sheepfarmer]

Gdubs, the folks that know the most about this engine have not been logged in this weekend to comment on this or your earlier thread. Unfortunately I can't help. Is this engine in your Bobcat? Can you get a shop manual from Bobcat? Alternatively, go looking for a Kubota of about the same age and track down a shop manual for that. There is generally a good engine section that would have some of the information you need.

 

[Henro]

Rebuilt d902 3 cylinder engine, new injectors/washers, new good fuel/filter, air cleaner, head/gasket, cleaned/rebuilt injector pump (used existing shims)

billowing gray smoke on startup and thereafter, and a slight rattle around the #3 cylinder area of engine (used stethoscope but could not pinpoint location).
New oil and filter a week ago
Has good power

aby ideas of what is causing this?

disclaimer: governor and idler bolts are adjusted to get it running, but not sure how to adjust to get it smooth

Who cleaned/rebuilt the injector pump? This piece of info might help those who know to offer their best advice. (I certainly am not one of them... ...wish I was...)

 

[Gdubs]

I did. There was a thread here with a link that gave good instructions on how to do it, and I consulted wuth the service tech from the company I bought the rebuilt pump from while I did it so as to keep the parts oriented correctly, etc

I have both the bobcat and the kubota shop manuals for this engine that I’ve been pouring over.