pinging

[sg11]

Originally Posted by detroiter

Maybe your hearing the timing chain? It's pretty noisy on these Toyota engines.

Maybe. Could be. Filled up with Exxon 93 a couple days ago though and havent noticed any pinging or the sound Im thinking is pinging. Im thinking 87 isnt the most ideal fuel octane I should use. Yes it runs good and I get good fuel economy on 87 but the pinging worries me as far as potentially doing long term engine damage. Or maybe I have carbon deposits? But how much carbon buildup can there be after 20k miles and using quality gas?