Max9650 Posted September 29, 2011 Posted September 29, 2011 I checked my spark plugs today and they were very black with carbon deposit i assume, they were changed 3k ago roughly, does this mean my car is running rich or is it normal for them to be black after 3k?What are the disadvantages of running rich? Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.