Carbon build up in the throttle body

[Sedan]

Originally Posted by Bluevitz-rs

There is no EGR, so when your mechanic tells you it's ok and charges you, he's ripping you off.

Thanks.
Is the EGR only available in the diesel varient?

And guys, is there a way to test weather VVTI is working properly?

[Bluevitz-rs]

Originally Posted by Sedan

Thanks.
Is the EGR only available in the diesel varient?

And guys, is there a way to test weather VVTI is working properly?

There is no EGR because of VVT-i. Only way to test is with a Techstream Tool from Toyota.

Piston slap is all you're hearing. It's normal on a cold engine. As the cylinder bore wears, piston to cylinder wall clearance increases and allows the piston to rattle back and forth slightly causing the knocking sound. Nearly every engine will eventually do it. You just need to take it really easy on it until it has had a chance to warm up and expand to close the gap.