Engine won’t start
Engine cranks but won’t fire
Rough idling
Misfiring
Loss of power
Ticking or clicking noise from the engine
Check engine light on
Visible cracks or fraying on the belt
Missing teeth on the belt
Glazing or shiny belt surface
Oil contamination on the belt
Belt looks loose, worn, or damaged
Engine suddenly stalls
Uneven engine performance
Tensioner or pulley noise
Belt age or mileage exceeds service interval