Help diagnose engine noise on 2.4 L 2RZ-FE

Post a video

 

https://youtu.be/8hD1NJFC8rg

Listen closely, over the valve noises you hear a clacking noise.

 

Mine makes the same noise, usually at idle when hot or after a hot restart is when it's louder. I honestly think it's just valves, had a mechanic listen and that's what he said too. She still runs strong, send it!

 

Resurrecting a dead thread here, but mine has been making the same noise for years. I’ve got a few videos up on youtube..

https://youtu.be/Dgc66du5df8

 

Yeah, mine's making a similar loud noise. Prodded around with my long breaker bar and listened... Can't find the source of the noise. It sounds like it's coming from the front driver side of the motor, right at the bottom of the head and near the intake manifold. Friends say that it's not a rod knock and not to worry about it.

 

2RZ/3RZ Valve Clearances: COLD

Intake: .015-.025mm (.006-.010 in.)

Exhaust: .025-.035mm (.010-.014 in.)

 

I had a similar noise, very tricky to pinpoint. It was the spring on the scissor gear. It looks like a large C clip, it was broken and the teeth were not under tension which allowed slop/lash. (The scissor gear is on the cam shaft near the head / timing chain area)