You might want to do a little more research next time before posting…
2) Timing Belt Problems
We’re moving onto yet another issue that really isn’t a true design flaw. However, the timing belt is an important standard maintenance item. Toyota 3MZ-FE engines are interference engines. This means there is some overlap in the area in which the pistons and valves travel. This isn’t a problem when the 3.3 V6 ignition timing is on par.
Pretty sure that is a timing belt…
