cleaning soot from inside exhaust

Seems pretty normal for trucks back then. You had more sulfur in diesel back then, but Cats always did that as I remember. If getting low MPG I guess burning all the diesel makes a lot of soot

 

You ain't running fast enough. Put the hammer down and let the big dog eat!!!
Back when I was chicken truck'n, never had any problem with "soot buildup"LOL!
Had flames running from the stacks.

 

Go get an old tom cat, stuff him in near the turbo, light a fire in her and your stacks will be cleaned as he claws his way out..

One note of caution, you will only get one shot at this then you will need a new cat. You won't ever catch the first one again.

 

So you want to play chimney sweep and clean out the pipes.

Consider this:
You would need to push a brush down into the pipe first.
What would that do?

It would clean things from the top down, thereby pushing a lot of junk into the pipe.
Whatever you pulled up from that point would be a very small amount compared to what you just pushed down.

If you really need to clean the pipes out you would need to take everything apart first, and do it piece by piece.

 

I drove late 80s b model that puked soot all over when fired up. The injection pump went to leaking oil big time on the side toward the block. Common back the

 

I had the same problem with an ISX.

Problem went away when the turbo was rebuilt. 25% better fuel mileage and no mo black snow. But that was an 05 engine.

 

http://www.target.com/p/duraflame-f...5guj6wSmR8zcW35ciuhofhoCqhPw_wcB&gclsrc=aw.ds

 

I forgot. Same here. 2005 ISX Replaced turbo. No more soot. The problem was actually a faulty turbo actuator. That engine ate the actuators. So long as I kept a good one on it no soot.