Vehicles using CMSA engine list:

Engine CMSA commonly faces issues like carbon buildup on intake valves due to direct injection, causing rough idling and reduced performance. Diagnosis involves checking for misfires and performing a compression test. Prevention includes using high-quality fuel and periodic intake cleaning with walnut blasting. The timing chain tensioner may wear prematurely, leading to rattling noises; early detection through noise diagnosis is key. Regular oil changes with manufacturer-recommended oil help prevent tensioner and camshaft wear. If carbon buildup is severe, professional cleaning or walnut blasting is necessary. Addressing these issues promptly ensures engine longevity and optimal performance in the Audi A3 1.4 TFSI models.