Hi guys,
Here is an update on my GMC generator-saga.
First of all I checked the exhaust hoping to find it chocked. Unfortunately it was nice and clean. Further to this, I checked from the exhaust port the cylinder and piston and both of them were like new.
In my first post I said that the spark was weak but yesterday I actually managed to get a good 5mm long spark when I tested the high voltage lead without spark plug.
Although this test would suggest that the ignition system is ok, when I poured a teaspoon of petrol into the cylinder I didn�t get any appreciable sign of life. After several pulls the engine actually tried to kick in making a bit of smog, but it was just for a fraction of a second while I was pulling.
Finally, after a few hours I decided to put everything together and bring the generator to the local mower shop. After being told that the servicing was $140 I decided to sell it to the shop for the same price I paid for it� I hate giving up, but there wasn�t anything else I could do with the standard tools I have. Hopefully my loss is their gain..I�ll check with the shop in a few weeks time what was wrong with it and I�ll let you know.