Since I simple greened the engine compartment I cannot floor my car without it pinging. I even tried using premium. The day I cleaned it I was hesitating and having problems missing for a few days because of me apparently getting water some where i shouldn't ( even though I was careful). Ever since then my car does feel like it is a little low on power. I mean I am due for a tune-up but I dont think that is the problem. Any thoughts would be appreciated.