NoPistons -Mazda Rx7 & Rx8 Rotary Forum - Possible Vaccum Line Leak?

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TOFU86

11-08-2002 01:29 AM

I can hear some whislting sound from the engine at 2-3K RPM after the car drive for a while and heat up. Suspected problem would be vaccum hose leak, do you guys agree with me or is it something else?

I am planning to do Silicon Vaccum Hose soon.

P'cola FD

11-08-2002 07:22 AM

Sounds a lot like what happens when you take off the ACV, and don't line up the little check valve in the LIM properly when you put it back in. I can't remember the exact name, port air control, or something of the like. Is it a really high pitched whistle? Has anyone taken apart your intake before you noticed the noise?

TOFU86

11-08-2002 08:43 PM

Car is full stock. Haven't take off anything. There is no whistle sound when idle, but when I step on the gas, whistle sound can be heard from around 2000 RPM and above

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