Bearing rattle?

[BailOut]

Well said, steved. Also, hissing is not pinging. A ping sounds like someone striking an anvil with a ball peen hammer. If you hear a lot of pings in a row it can sound like an unbalanced washing machine in a spin cycle.

Hissing usually indicates intake air and exhaust gas movement. I've heard the 1NZ-FE engine produce a hiss under WOT (wide open throttle) in a high load scenario, which is just air moving into and throughout the throttle body.

[ern-diz]

Originally Posted by BailOut

Well said, steved. Also, hissing is not pinging. A ping sounds like someone striking an anvil with a ball peen hammer. If you hear a lot of pings in a row it can sound like an unbalanced washing machine in a spin cycle.

Hissing usually indicates intake air and exhaust gas movement. I've heard the 1NZ-FE engine produce a hiss under WOT (wide open throttle) in a high load scenario, which is just air moving into and throughout the throttle body.

what is your opinion on higher octane gas, Mr. FE?...i would honestly love to know...i find your opinions to be well researched so, i take them into consideration (although i do believe there is some truth to what someone once said to you in another thread, about hypermiling being a bit of a sport that produces some self satisfaction that drives a lot of people to do it, not always just the preservation/conservation factors alone--but thats a whole 'nother topic )...our friend here thinks its a waste of money, agree?...disagree?...