Would a bad gasket on your tension pulley cause belt to not run smooth?
Yes, a bad gasket on your tension pulley can cause the belt to not run smooth. The gasket is responsible for sealing the gap between the pulley and the engine block, preventing air and debris from entering the engine. If the gasket is damaged or worn out, it can allow air and debris to enter the engine, which can cause the belt to slip and run rough. Additionally, a bad gasket can cause the pulley to overheat, which can also cause the belt to slip and run rough.