The customer’s vehicle came in running rough. In the process of diagnosing the vehicle we found a misfire. After trying several common solutions, it was determined that the valve lash needed to be checked. We adjusted the valve lash and found the exhaust valve would not allow the valve lash to be in spec. We then performed a smoke test. This revealed that there was a leak. It led us to remove the cylinder head. There was a chip in the valve, creating the leak. The photo below shows a chip in the exhaust valve of the third cylinder.

Once the exhaust valve is replaced and the valve lash is within spec, the misfire should be corrected.

The frequency of which the valve lash needs to be adjusted varies based on the make and model of your vehicle. It is important to check your vehicle’s scheduled maintenance to avoid any issues in the future.

The guys at RAD Auto Repair are prepared to go the extra mile in helping you keep your car performing at it’s best! Call or stop by today!

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