W126, lean right bank and rich left - Help me!!
Hello Mercedes frinds,
I changed the spark plugs this weekend and noted that all the plugs on the right cylinder bank were white and all the plugs on the left were black.
I did get a reply on another post that I did that it might be the idle air circuit on one sid that was blocked.
Well, I´m clueless on how the find it and check it out.
Can You help me a bit??
Many thanks in advance,
1984 500 SEL