Well, I needed a new tps sensor, so I installed it, and then my car started to bog when I accelerated and it would surge at idle. Yesterday when I was driving it, it just died on me, when I pulled the spark plugs, the tip on one of them was completely gone. What do you think the cause of this was? Im guessing the timing was probably off. I just got the car back, and the guy that put in the motor probably didn't time it right, what do you guys think?

 

what engine and how many miles? Last time i put 87 octane in my B16, it knocked.

 

its a mini me with 100k miles.....what all do I have to do to fix it?