florianfeuer1

Modus engine power loss

My 2010 Renault Modus with a gasoline engine is acting up. At 123656 km, I've got reduced power, jerking when accelerating, and smoke when I accelerate hard. Also, I pulled an error code. Could this be knocking combustion? I'm thinking it might be deposits in the combustion chamber.

A 2010 Renault Modus experienced reduced power, jerking during acceleration, and smoke, with an error code suggesting possible knocking combustion. The issue was suspected to be caused by deposits in the combustion chamber or a faulty knock sensor. After taking the car to a workshop, the problem was confirmed to be deposits, which were cleaned, resulting in the car running smoothly again.

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4 comment(s)

I had similar symptoms with my Modus. Have you checked the knock sensor, and what fuel octane are you using?

I haven't checked the knock sensor yet. I'm using standard unleaded fuel, the same as always. Could the fuel octane level be causing the knocking? I am not familiar with engine tuning, could that be the issue, too?

The fuel octane could be a factor. But with the smoke and error code, deposits in the combustion chamber seem likely, and a faulty knock sensor is also possible. I'd recommend taking it to a workshop for a proper diagnosis and cleaning of the cylinder heads.

Thanks for the advice. I took it to a workshop as suggested, and it was deposits in the combustion chamber. A cleaning and some adjustments cost me 425€. The car runs like new again.

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RENAULT

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MODUS