Hey guys I am having some black spray coming out of my tail pipe. I noticed it as I was ideling in the garage. I have an O2 1 Bank 2 issue and I am waiting for the part to come in. Will a Bad 02 sensor cause the issue. There is not black smoke and the truck runs great but the water used to be clear and now it is black. I did a Sea Foam treatment about a week ago. Is this the residual gunk?

Thanks,

Chris

 

How many miles on your truck. Moisture is a normal by product of combustion and any soot from the engine whe it is warming up will come out with the moisture.

 

I have 49k and it is an 02. Thanks for the help.