smokeyjj

When I start my car and let it idle for a bit there's a big black spot on my driveway from the exhaust... its like a chalky powder.... and it's all threw the exhaust pipes. I do burn some oil between changes like any other high mileage Honda but I'm curious what this is doing to my cat? could it be clogging it up? I haven't had the car long so I wouldn't be able to tell you if there is any performance loss.


97 civic btw.

B_Swapped93

It's soot inspect your plugs and see if they're black. car's probably running rich either way..