cm870 excessive black smoke under power
08-13-2016, (Subject: cm870 excessive black smoke under power ) 
Post: #6
RE: cm870 excessive black smoke under power
(08-13-2016 )Bahdan Wrote:  Mine did black smoke with brand new egr valve. Theres much more to it than just egr valve.

I would suggest doing the rawze egr tune up. Or just leave it unplugged.

Leaving the EGR unplugged is ok to just get home and take care of the problem!
Otherwise is not good to drive like that for many reasons. One of which is this will derate the engine and throw havoc in the ECM. Not to mention the CEL light and unstable EGT's .
In my book this is no no .
I still strongly suggest to get in touch with the guys mentioned above!
The choice is yours.
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