Spark knock is the fuel detonating in the cylinder before full compression.
the car still runs but constant detonation will eventually wear a hole in
the your pistons among other things. There's a knock sensor on the engine
that is supposed to adjust your timing to prevent this.

a misfire means the cylinder in questions is not firing........for what ever
reason. And it might not even be coming from your engine. When is it
happening? and what were you doing when it occurred? accelerating? turning
the wheel? going over a bump?

Take the service advisor at the dealer for a drive and demonstrate the
problem for him so he can demonstrate it for the tech. A knocking sound is
much louder than "ping" and much different causes.

My question is.......how long have you owned the car? did you have it
checked out before you bought it? Also ask the dealer if the balance of the
warranty was transferred.




"Tina A" > wrote in
message roups.com...
>I bought a used 2013 Chrysler 200 (4 cylinder). I hear a knocking noise
>that
> comes from the driver's side and it sort of vibrates to the steering
> wheel.
> The Chrysler dealership has told me that it was a 'spark knock'. I found
> out
> that was simply a thing called a misfire. I do believe that I have that
> issue
> also with the damn ethanol in the gasoline. But, I don't believe that is
> the
> issue with the knocking sound with a slight ping that I feel in the
> steering
> wheel. I believe it to be something with the steering, shock/strut,
> suspension
> or brakes. Any clues? Thanks!!!!
>
> --
> posted from
> http://www.motorsforum.com/chrysler/...eel-72024-.htm
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> rec.autos.makers.chrysler and other automotive groups
>
>