You can try lots of quick fixes or you can do it right. Pull the head and fix it right. I stuck several intake valves shut on my '38 by using old gas. I ended up pulling the head and driving the valves out. A good cleaning (head and gas tank) solved the problem for me.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.