Avantime Hissing Noise and Fuel Consumption

Hi, I have a 2002 Renault Avantime with a gasoline engine and 207304 km. Fuel consumption is up, the check engine light is on, and there's a hissing sound from the engine bay when I accelerate. Could it be an intake hose leak, maybe by the turbocharger? Anyone else had this?

4 comment(s)

Hissing, eh? Sounds familiar! I've got an Avantime too. Loud hissing plus the check engine light... Hmm. Did you check your vacuum hoses? They can get brittle and crack, causing a leak. High fuel consumption makes sense if you're losing pressure somewhere. What about the air filter? Is it clean? An engine misfire can also cause the same symptoms...

You mention vacuum hoses – a valid point. Where did you find the leak in your system? Was it obvious, or did you use smoke or something to find it?

Well, I'm no expert, but after fiddling around, I couldn't pinpoint the exact spot. So, I took it to a workshop. They found a split in one of the intake hoses, near the turbocharger. I think it's best if you visit a mechanic!

Sounds like what I suspected. A workshop trip is probably needed. Thanks for confirming my thoughts and sharing your experience. I'll check the intake hoses again and get ready for the 100€ repair bill. I'll post the outcome.

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