So, in my quest to get rid of a P1300 Check Engine Light on my 97 Toy Avalon, I had replaced the Cam Position Sensor, which was out of spec- this solved the problem for about a month, then the CEL came on again last night. Thinking that possibly there was a bad spark plug (even though I had checked 4-6 plugs and found that they looked good), I ran to the auto parts store and got new NGK plugs. I started removing the old plugs one by one and when I got to cylinder 6, lo and behold, one of the plugs was almost shorted on one of the electrodes (they were double electrode platinums). However, it wasnt shorted by carbon, but it looked like the electrode possibly bent or warped somehow so that it was more or less touching the middle core. I am hoping changing the plugs fixed the problem. Anyway, I was wondering how it is possible for an electrode to "bend" like that. Could it have been a careless mechanic putting it in when they did the timing belt? I wonder... Thanks for any replies.