Black Smoke ???
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Elder User
Joined: Dec 2004
Posts: 613
Likes: 1
Black Smoke ???
I have seen big rig trucks blow big clouds of black smoke out of their stacks while taking off from a dead stop. Is this a common occurance while heavy into the throttle on our little 6.0 Superduties??? I noticed some tailpipe smoke this morning while fooling around a little bit while tromping it from a dead stop.
Thanks in advance.
Thanks in advance.
Senior User
Joined: Jan 2005
Posts: 174
Likes: 0
From: Lynchburg Virginia.
Excessive BLACK smoke at full throttle is a sign of over fueling. In the older engines, before computer controled injecters, the fuel pressure was mainly controled by the injection pump. There were various ways to increase the "rail" pressure. On the earlier/pre "formula" Cummins engines you could do this by restricting the return line. I have seen many trucks come in with the return lines "chewed" up from clamping them with visegrips. Also saw a lot of dimes with a small hole in them installed in the tank fitting. You could also change the pump "button", recalibrate the "ariroid" valve, etc. What ever they did it usually just killed their fuel milage and had little to do with performance but its like trying to have a conversation with a tree trying to convince a truck driver that what "bubba" told him over the CB really didnt help!
Posting Guru
Joined: May 2004
Posts: 1,380
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Originally Posted by Todder
Low boost fueling. Get an Edge box or a good tune and it will smoke like a train.
