ASE T2 Domain 2: Cylinder Head and Valve Train Diagnosis and Repair Welcome to your ASE T2 Domain 2: Cylinder Head and Valve Train Diagnosis and Repair 1. ASE T2: Cylinder Head and Valve Train Diagnosis and Repair During a cylinder head repair on a diesel engine, the technician notices that the valve seats are pitted and worn. Which of the following actions should be taken? A. Replace the entire cylinder head. B. Grind the valve seats and valves to match. C. Perform a chemical cleaning on the valve seats. D. Install valve seat inserts. None 2. ASE T2: Cylinder Head and Valve Train Diagnosis and Repair A diesel engine with an overhead camshaft design is producing a loud ticking noise from the valve train area. The noise increases with engine RPM. Which of the following could be the cause? A. Stretched timing chain B. Faulty hydraulic lifters C. Excessive valve clearance D. Weak valve springs None 3. ASE T2: Cylinder Head and Valve Train Diagnosis and Repair When performing a valve train diagnosis, the technician finds that the pushrod is bent. Which of the following is a common cause for this condition? A. Over-revving the engine B. Incorrect valve timing C. Valve float at high RPM D. Foreign object lodged between the valve and seat None 4. ASE T2: Cylinder Head and Valve Train Diagnosis and Repair A diesel engine is experiencing intermittent misfiring and a loss of compression. The technician suspects a problem in the cylinder head area. Which of the following is MOST likely the cause? A. Cracked cylinder head B. Burned exhaust valves C. Worn piston rings D. Blown head gasket None 5. ASE T2: Cylinder Head and Valve Train Diagnosis and Repair What would be the result of a diesel engine's valve train operating with valves that have insufficient clearance? A. Reduced engine braking efficiency B. Increased valve train noise C. Potential valve and piston interference D. Decreased air intake volume None 6. ASE T2: Cylinder Head and Valve Train Diagnosis and Repair After a cylinder head overhaul, the technician notes that the engine starts easily when cold but is difficult to start when hot. What is the MOST likely issue? A. Improper valve seat contact B. Incorrect camshaft timing C. Over-torqued cylinder head bolts D. Residual coolant in the combustion chambers None 7. ASE T2: Cylinder Head and Valve Train Diagnosis and Repair When inspecting the valve train components, the technician finds that the camshaft lobes are excessively worn. What is a likely cause of this condition? A. Poor oil quality B. Incorrect valve lash adjustment C. Excessive valve spring pressure D. Inadequate valve guide lubrication None 8. ASE T2: Cylinder Head and Valve Train Diagnosis and Repair The diesel engine's overhead camshaft has snapped at the mid-section. Which of the following could be a primary cause of this failure? A. Camshaft bearing seizure B. Excessive camshaft endplay C. Faulty camshaft position sensor D. Misaligned timing gears None 9. ASE T2: Cylinder Head and Valve Train Diagnosis and Repair While diagnosing a diesel engine, a technician finds metal shavings in the oil filter. The engine has been recently rebuilt. What is the most probable source of these metal shavings? A. Cylinder liner scoring B. Valve guide wear C. Improperly seated valve keepers D. Camshaft lobe deterioration None 10. ASE T2: Cylinder Head and Valve Train Diagnosis and Repair Which of the following is a likely consequence of excessive valve stem-to-guide clearance in a diesel engine? A. Increased oil consumption B. Lower exhaust gas temperatures C. Higher turbocharger boost D. Reduced engine braking None 1 out of 10 Time is Up! Time's up
