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Q: Air Leak noise while accelerating on 2004 Lexus GX470

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On accelration around 2000-2500RPM a air hissing out noise, something like a Air gushing out, and all this within 2-4 seconds and accelration is normal, no power loss, check all hoses around engine and Exhaust for leaks nothing found so far, any tips. Email - mann68@gmail.com
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I'm having a problem too with my '99 Lexus 470. I'd describe it as the engine is racing when I accelerate. Let me know if you find anything out. Thanks, Chris
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