You can get the boss off without a pulley. Put it on a hard metal surface ie a vice. Then smack it with a hammer a few times. If it doesn't come off turn it around and smack again keep doing this it will come off. Just don't smack it that hard that damage could be done. Then get a screw driver and just touch the inside of the seal if its soft and flexes great if its hard and doesn't move no good replace. It may due to sitting and not be leaking yet but has enough to allow a lack of compression. To check top seal you would have to take off flywheel and ignition. Now you said it had spark just have a look at it when it sparks and see what the colour of the spark is to see,whether it is a yellow/orange colour or blue spark.
Last edited by Blumbly; 05/09/13 04:20 AM.
