Quote:
Originally Posted by chrisnyc
Interesting.. When i got my blk 2011 50i cpo, the exhaust tips were flat black; i thought that someone simply blackened the tips.. Later on i discovered that furher down the pipe is chrome/silver; i've tried to remove the black "frosting" using sort of chemicals but it was unsuccessful
Now that i'm reading this thread the pitch black exhaust tips(that i was finally able to sand and repaint black lol) could have been caused by the fuel mixture that is too rich.. So far i have no error codes or check engine light.. I have also purchased my truck park ave and reading the stories above does not make me feel confident even servicing with them...
Aren't there an injector cleaners like bg44k that could unclog the injectors?
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My exhaust tips were always black, as long as the bumper area surrounding the exhaust tip is not black then you are fine.
A leaky injector may not set off a CEL, however it may have several misfire codes stored. It takes a lot of failure and issues to set off the CEL. But the misfire code is still store in the DME, the dealer can read that.