2000 rx300 strange noise at around 3500rpm

[Grf471]

I I'm getting a strange noise when I accelerate when it hits 3500 it sounds like he has a compression leak sounds just like an air compressor trying to pump up does anybody have any ideas

[TrevC]

Sounds like either a small leak from the exhaust (flexi-pipe or joint) or even the inlet manifold.

I would check the exhaust system first as its easier to see where escaping gases are coming from.

Plug the tailpipe with a rag over it to seal the exhaust and you will hear any leaks by the hissing noises.

[Grf471]

Not an exhaust leak and I lose lots of power

[Filehorse]

Sounds like a trip to your local independent Toyota/Lexus shop may be in order.