Toyota provides a large selection of high-performance parts. But after a long time, the worn valve stem oil seal parts might cause huge problems. The removal process for a valve stem oil seal is as follows. Drain the coolant. Remove the cylinder heads off the engine block. And attach a compressor check tool and used compressed air to hold the valve in place. Then, the compressed air will allow for the removal of the spring and not let the valve drop. Next, place the cylinder on top dead center. Use a valve spring compressor tool to compress the springs. And remove the spring. Finally, pull the valve stem oil seal out of place with some pliers. Signs of bad Toyota valve stem oil seal parts include smoke coming out of the exhaust and engine misfiring. Signs also include higher oil consumption and poor engine performance. Customers can reach our site and get performance Toyota products online every day. We guarantee consumers reasonable and affordable shipping.