Any ideas, 2545 smoke

[brenstar]

I have taken the tractor to the dealer, but they were unable to recreate this situation and I am not suprised because it is very infrequently that it happens.

Now and again, the tractor will start blowing blueish smoke. It will do it for about 5-30 seconds and then stop. No other symptoms and nothing in particular that I am doing when this happens. It's enough smoke where you can watch it blow down the road in a small cloud....very noticable. Once I see it start to happen, I can push the clutch it and rev the engine and it will make a lot of smoke. It has happened about 5 times in 90 hours of operation.

The dealer checked the EGR valve and reprogrammed the ECM but other than that had no suggestions.

Any ideas? What would you guys do.....just keep running her?

The oil level is not going down as if it were burning a lot of oil.

Thanks

 

[RNeumann]

My guess is a stuck EGR or more likely an injector is sticking open. Third would be an over pressure condition in the fuel system resulting in over fueling.
Typically smoke is unburned fuel- unless you have a major internal motor issue- which aren’t intermittent as you describe.

I don’t know if the injectors open and close (typically electronically) or if the the fuel is sent to an always open injector via a common rail. Newer injectors typically open and close and if it sticks open it can play heck and smoke. Google Duramax LB7- that is probably one of the more famous cases of this happening on a large scale.

 

[DLTTrekkers]

Check your igbitionswitch. Can get stuck in heating up posision( thermistart)

 

[screamin400]

If I let my 2538 idle for more than 2 minutes when I revved up it would smoke and skip for about 20-30 seconds and then be fine. I am thinking EGR but unsure.