When it involves a repair, you must first remove the old oil seal. To remove an oil seal, it is important to use the right tools to avoid damaging the shaft and bore. The best solution is therefore to pull out the oil seal without having to completely dismantle the shaft. This can be done by making a few holes in the oil seal with an awl and a hammer. You can then use a hook to pull the oil seal out of its seat. You could also screw some screws into the holes and then slowly pull out the screws to extract the oil seal from its housing. Be careful not to damage the shaft or housing in the process.
A faulty spark plug ignition coil can cause a variety of problems with engine performance. Symptoms of a failing ignition coil may include misfires, rough idle, hesitation during acceleration, and reduced fuel efficiency. If left unchecked, a faulty ignition coil can eventually lead to engine stalling or complete failure to start.
spark plug ignition coil

Prepare the shaft and prevent damage
Shaft and Bore Tolerance
Sealing lip