GM 19207664 Seal Kit,Valve Stem Oil

Remove the spark plugs and the valve covers, camshafts and rocker arms. Thread an adapter into the spark plug hole and connect an air hose from a compressed air source to it. Most auto parts stores can supply the air hose adapter. Apply compressed air to the cylinder. The valves should be held in place by the air pressure. Using a socket and a hammer, gently tap on the top of each valve spring retainer several times, then use a valve-spring compressor to compress the spring. Remove the keepers with small needle-nose pliers or a magnet. Remove the valve spring and retainer. Remove the old Valve Stem Oil Seals, noting differences between the intake and exhaust seals. Wrap a rubber band or tape around the top of the valve stem so the valve won't fall into the combustion chamber, then release the air pressure. Inspect the valve stem for damage. Rotate the valve in the guide and check the end for eccentric movement. Move the valve up-and-down in the guide and make sure it does not bind. Reapply air pressure to the cylinder to retain the valve in the closed position, then remove the tape or rubber band from the valve stem. If you're working on an exhaust valve, fit the new exhaust Valve Stem Oil Seal on the valve stem and press it down over the valve guide. If you're working on an intake valve, install a new intake Valve Stem Oil Seal over the valve stem and press it down over the valve guide. Install the spring and retainer in position over the valve. Compress the valve spring assembly only enough to install the keepers in the valve stem. Position the keepers in the valve stem groove. Apply a small dab of grease to the inside of each keeper to hold it in place if necessary. Remove the pressure from the spring tool and make sure the keepers are seated. Disconnect the air hose and remove the adapter from the spark plug hole. Repeat the above procedure on the remaining cylinders. Install the rocker arm assemblies, camshafts, timing chains and the valve covers. Start the engine, then check for oil leaks and unusual sounds coming from the valve cover area. Allow the engine to idle for at least five minutes before revving the engine.

Valve springs could be damaged and valve stem seal could be faulty and in most cases to replace these only one needs to take off the cylinder head, and one needs two special tools and a compressed air. High plugs, plenum, intake, valve covers, timing chains, cams, and rocker assemblies should be installed first. Insert an adapter to the spark plug hole and attach an air hose from an air pressure. Spray compressed air into the cylinder to secure the valves after which, a light knocking on the top of each valve spring retainer frees the valve keeper from the spring retainer to enable the compression of the spring with the help of a valve spring compressor. Pull out the keepers using needle-nose pliers or by using a magnet and thereafter, pull out the valve spring as well as the retainer. If air pressure does not suffice to keep the valve in place, it might be necessary to take off the cylinder head for purposes of repair. Take off the old valve stem seals, remember that intake stem seal is generally thinner than that of exhaust and place a rubber band or tape around the end of the valve stem so that it cannot fall into the combustion chamber when you release the air pressure. Visually check for an indications of wear on the valve stem and check to be sure if it freezes in the guide; if it does then heads will require removal for repairs. Apply pressure on the valve to lock it in then put the new valve stem seals over the ends of the valve guides making sure that an exhaust valve seal is not fitted onto an intake valve. Place the spring and retainer back on to the valve, tighten up the spring until the keepers can be reinserted, and in some cases to secure them, use a drop of grease. Release the pressure from the spring tool to allow the keepers to set properly, disconnect the air hose and lift the adapter from the spark plug hole. Perform the same for the rest of the cylinders; replace the rocker arm assemblies, camshafts, timing chains, and the valve covers. Cranks the engine and examine for any sign of oil leakage and for strange noises, it is recommended that the engine be allowed to run for no less than five minutes before testing acceleration.

Remove the spark plugs and the valve covers, camshafts and rocker arms. Thread an adapter into the spark plug hole and connect an air hose from a compressed air source to it. Most auto parts stores can supply the air hose adapter. Apply compressed air to the cylinder. The valves should be held in place by the air pressure. Using a socket and a hammer, gently tap on the top of each valve spring retainer several times, then use a valve-spring compressor to compress the spring. Remove the keepers with small needle-nose pliers or a magnet. Remove the valve spring and retainer. Remove the old Valve Stem Oil Seals, noting differences between the intake and exhaust seals. Wrap a rubber band or tape around the top of the valve stem so the valve won't fall into the combustion chamber, then release the air pressure. Inspect the valve stem for damage. Rotate the valve in the guide and check the end for eccentric movement. Move the valve up-and-down in the guide and make sure it does not bind. Reapply air pressure to the cylinder to retain the valve in the closed position, then remove the tape or rubber band from the valve stem. If you're working on an exhaust valve, fit the new exhaust Valve Stem Oil Seal on the valve stem and press it down over the valve guide. If you're working on an intake valve, install a new intake Valve Stem Oil Seal over the valve stem and press it down over the valve guide. Install the spring and retainer in position over the valve. Compress the valve spring assembly only enough to install the keepers in the valve stem. Position the keepers in the valve stem groove. Apply a small dab of grease to the inside of each keeper to hold it in place if necessary. Remove the pressure from the spring tool and make sure the keepers are seated. Disconnect the air hose and remove the adapter from the spark plug hole. Repeat the above procedure on the remaining cylinders. Install the rocker arm assemblies, camshafts, timing chains and the valve covers. Start the engine, then check for oil leaks and unusual sounds coming from the valve cover area. Allow the engine to idle for at least five minutes before revving the engine.

Remove the spark plugs and the valve covers, camshafts and rocker arms. Thread an adapter into the spark plug hole and connect an air hose from a compressed air source to it. Most auto parts stores can supply the air hose adapter. Apply compressed air to the cylinder. The valves should be held in place by the air pressure. Using a socket and a hammer, gently tap on the top of each valve spring retainer several times, then use a valve-spring compressor to compress the spring. Remove the keepers with small needle-nose pliers or a magnet. Remove the valve spring and retainer. Remove the old Valve Stem Oil Seals, noting differences between the intake and exhaust seals. Wrap a rubber band or tape around the top of the valve stem so the valve won't fall into the combustion chamber, then release the air pressure. Inspect the valve stem for damage. Rotate the valve in the guide and check the end for eccentric movement. Move the valve up-and-down in the guide and make sure it does not bind. Reapply air pressure to the cylinder to retain the valve in the closed position, then remove the tape or rubber band from the valve stem. If you're working on an exhaust valve, fit the new exhaust Valve Stem Oil Seal on the valve stem and press it down over the valve guide. If you're working on an intake valve, install a new intake Valve Stem Oil Seal over the valve stem and press it down over the valve guide. Install the spring and retainer in position over the valve. Compress the valve spring assembly only enough to install the keepers in the valve stem. Position the keepers in the valve stem groove. Apply a small dab of grease to the inside of each keeper to hold it in place if necessary. Remove the pressure from the spring tool and make sure the keepers are seated. Disconnect the air hose and remove the adapter from the spark plug hole. Repeat the above procedure on the remaining cylinders. Install the rocker arm assemblies, camshafts, timing chains and the valve covers. Start the engine, then check for oil leaks and unusual sounds coming from the valve cover area. Allow the engine to idle for at least five minutes before revving the engine.

Remove the pressure from the spring tool and ensure the keepers are seated, then disconnect the air hose and remove the adapter from the spark plug hole.

An adapter is threaded into the spark plug hole, and an air hose from a compressed air source is connected to apply compressed air to the cylinder, holding the valves in place.

Two special tools and a compressed air source are typically required.

Inspect the valve stem for damage, ensuring it does not bind in the guide.