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84 Eagle 6V92 Blowing Black Smoke

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84 Eagle 6V92 Blowing Black Smoke
Tue Jul 11, 2017 1:08 pm


All,
I have a 1984 Silver Eagle with the 6V92 converted to automatic and when I accelerate it blows out black smoke from the exhaust pipe. Once I'm going at a steady speed hardly no black exhaust is noticeable. Only when I get on the pedal, either from stop and go or accelerate to get to a faster speed.
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marcg6
 
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Joined: Wed Jun 28, 2017 10:11 am




The black smoke is probably normal. The smoke will occur until the turbo builds pressure.

In those years Eagle had a couple of ways of trying to control the acceleration smoke. They tend to make acceleration a bit slow and some folks defeat the systems. Sounds like someone did that on your bus.

Jim
Jim Shepherd
Evergreen, CO
'85 Eagle 10 with Series 60 & Eaton AutoShift 10 speed transmission - not at all fancy, but fully functional
Bus Project pages: http://beltguy.com/Bus_Project/busproject.htm
Blog: http://beltguy.com/blog/
Email: jim@eaglesinternational.net (Please email me rather than use the PM process)
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beltguy
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You may see a puff of black smoke when accelerating if the throttle delay has been removed. Drive with a light foot.

More likely you have a turbo leak.

Black smoke is unburned fuel. Too much fuel for the amount of air available.

Get someone who hears better to listen for a high pitched whine when you are accelerating.

Check all the clamps and air tube connections from the turbo to the intake horn.
Joe Laird
'78 05
Sioux Falls, SD
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akroyaleagle
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Thanks for the feedback everyone. I was looking over my exhaust and observed two areas where it connects with clamps and observed some exhaust leaking around those clamps. I will work on tightening up those and go from there.
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marcg6
 
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