Acura 14721-PR3-000 Exhaust Valve

Due to the complex nature of the job and the specialized tools and equipment required, servicing the valves, valve seats, and valve guides, commonly referred to as a valve job, should be performed by a professional. A home mechanic can remove and disassemble the head, conduct initial cleaning and inspection, and then reassemble it for delivery to a dealer service department or an automotive machine shop for the actual service work. Conducting the inspection allows for assessment of the condition of the head and valve train components, ensuring awareness of necessary work and new parts when engaging with an automotive machine shop. The dealer service department or automotive machine shop will handle the removal of valves and springs, reconditioning or replacing valves and valve seats, reconditioning valve guides, checking and replacing valve springs, rotators, spring retainers, and keepers as needed, replacing valve seals, reassembling valve components, and verifying the correct installed height. Additionally, the cylinder head gasket surface will be resurfaced if warped. Once the valve job is completed by a professional, the head will be in like-new condition. Upon its return, it is important to clean the head again before installation on the engine to eliminate any metal particles and abrasive grit that may remain from the valve service or head resurfacing operations, using compressed air if available to blow out all oil holes and passages.