I have a 97 215 h cummins with 269,000 miles. When I mash the throtal. Just siting in nutal it.it spits and sputers and blowes a blueish grey smoke. But when I'm driveing down the road it runs fine and has lots off power. Any ideas could use a little help

 

Couple things fuel related, air in fuel from fuel supply/return line leaks, weak overflow valve and possibly slipped timing.

Does is do this warm or cold or both?

 

It doesn't seem to mater if it is warm or cold. It has been siting fo three years or more. I haven't changed the fuel filter yet thaught I would try that fisrt. Thanks for the ideas.

 

If its been sitting, even the fuel quality would be an issue. Try some diesel fuel additive in the tank to try and take care of any water issues too. But the fuel lines would be my first check.

 

Ok I will do that. It does have small fuel leak some were haven't had time to find it yet.

 

Is it safe to remove the fuel plate compleatly? If not what is a good fuel plate.

 

i had the same problem, changed the fuel filter and it went away

 

Thanks ill try that

 

Personally I am not a fan of removing the plate.

 

Ok I won't do that.

 

Well I changed the fuel filter. It cleaned up the greyish blue smoke but it stil mised. Then yesterday I ground my fuel plate an slid every thing forwerd. It helped some then I went for a drive and when I got back the mis was gone.