I recently got my car checked out at a jiffy lube and got an oil change (full synth, overpriced do it myself next time) car ran much stronger after I got it done, but the guy said he saw some coolant in the sparkplug wells (I had also noticed this days prior) but he didn't do anything about it. A few days later I had some fun and did some burnouts, that night driving home I noticed a knocking noise from 2-3 rpm. 1: It knocks only when I press the throttle in either neutral or when lightly pressing it cruising in gear 2: Does not knock when I lay it down in gear (but it does when I lay it down in neutral) 3: It only knocks when the car's hot and not when I initially turn it on when its cold Do I need to get myself a new intake or what? I have a video of the noise that I can post if it makes it easier, I just had trouble uploading. Thank you for any responses in advance!