leamayer1

Avantime rough running exhaust leak

Having trouble with my 2001 Renault Avantime (gasoline engine). It's got almost 200,000 km on it. Lately, the engine's been running really rough. The check engine light is on, and I've noticed some pretty significant jerking when I try to accelerate. I checked the error memory and there is an error stored. Could this be related to a bad crankshaft sensor or maybe even fuel injectors?

4 comment(s)

Rough idle and jerking on acceleration? Sounds like an engine misfire! Have you checked for any exhaust leaks? Even a small leak can throw off the engine's sensors and cause it to run poorly. It's often overlooked, but easy to check.

An exhaust leak, huh? I hadn't considered that. Where exactly should I be looking for this leak? Is there a particular spot that's more prone to cracking or rusting?

Yes, exhaust leaks are sneaky! Check around the exhaust manifold where it bolts to the engine, and also along the exhaust pipe seams and connections, especially near the catalytic converter. Given the age, rust is a prime suspect. Honestly, though, finding a small leak by ear can be tough. You might want to get it smoke tested at a workshop to pinpoint the exact location.

Thanks for the tip! I took it to my local mechanic, and you were spot on - it was a small leak in the exhaust system. Cost me 265€ to get it fixed. Now it is running smoothly again!

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