Can You Replace Valve Stem Seals Without Removing Head. There are two basic types of bike tire valves. On this job we only needed to replace the valve stem seal as the customer had issues with lots of smoke coming out of the tail pipe.
As long as the valves seal adequately the air pressure in the cylinder will hold the valves in place while you remove the valve spring keepers and the valve spring seals. A word from the customer. This is the tool that allows you to remove and install the valve spring retainer and keepers without removing the cylinder head.
Next I wanted to try replacing the valve stem oil seals to reduce oil consumption since valve seals are very inexpensive but my factory manual only described replacement with the head removed.
Now start on cylinder 1 take the spark plug out. I am aware the valve can be kept in place with compressed air. Can you replace valve stem without removing tire. I have a pair of SOHC EJ25 heads that I am rebuilding right now.
