Improperly Adjusted Valves May Cause Emissions Failure/Rough Idle: Toyota MR2 Muffler & Exhaust

Problem overview

A rough idle and even an emissions inspection failure for high HC and CO can be caused by improperly adjusted valves. Also, exhaust valves may become too tight which can lead to valve failures. Our technicians tell us that regular valve adjustment inspections are a must.

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Toyota MR2 vehicles with this problem

4 model years affected

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Improperly Adjusted Valves May Cause Emissions Failure/Rough Idle on Toyota MR2

Problem overview

Toyota MR2 vehicles with this problem

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