Cylinder 2 Misfire Detected

Cylinder 2 misfire on the Coyote V8 is usually an ignition coil (Motorcraft). Swap coils to verify. If the misfire stays on cylinder 2, check the fuel injector. 0L engines. Also check for a cracked spark plug -- Ford plugs are known to break during removal. Your dealer can confirm whether an open service bulletin or warranty extension applies to your VIN. Confirm the exact part for your year and engine with a retailer's fitment lookup or your VIN before ordering - these applications split by engine and build date.

Perform a coil swap test -- move the coil from cylinder 2 to cylinder 4. If the misfire moves to cylinder 4, replace the coil (Denso). If misfire stays on cylinder 2, do a compression test. Low compression indicates a burned valve or bad head gasket. Toyota engines rarely have internal issues so coil/plug is most likely. Confirm the exact part for your year and engine with a retailer's fitment lookup or your VIN before ordering - these applications split by engine and build date.

Cylinder 2 is NOT an AFM cylinder on the 5.3L, so this is less likely to be lifter-related. Check ignition coil (ACDelco) and spark plug first. If those are good, suspect a fuel injector issue. Replace with an OE-quality ACDelco unit if out of spec. Your dealer can confirm whether an open service bulletin or warranty extension applies to your VIN. Confirm the exact part for your year and engine with a retailer's fitment lookup or your VIN before ordering - these applications split by engine and build date.

Cylinder 2 on the boxer engine is the passenger-side rear cylinder. Ignition coil failure is common (Denso). These coils crack from heat cycling. Also check for oil fouling -- Subaru engines can leak oil past the valve stem seals into the spark plug tube. Replace the plug tube seals while you are in there. Confirm the exact part for your year and engine with a retailer's fitment lookup or your VIN before ordering - these applications split by engine and build date.