gen 1 Misfire

[unfazed]

I fitted the 2 plugs from the 600, started up fine then within minutes ,I lost no 4, This would seem conclusive that no 4 is flooding constantly and no 1 intermittently.  This will have to wait till i'm in a better state of mind to take the carbs of,

Push a clear plastic pipe onto the drain hole and tape on to the side of the carb. Loosen the drain bolt and and let it fill the pipe check the level of the fuel in the line in relation to the float bowl. Now start the engine and see if the height changes when the engine is running and being revved. See picture attached.

If levels are wrong it is either dirt or dodgy float valve seals.
If it is seals change all 4.

[bwizz]

Ta i'll give that a go,  Very difficult to get at no4 .

[bwizz]

Just an update on the misfire.  Just started up the bike after not touching it for two weeks.  Started perfectly I have done a few short test rides since and still ok . Only thing I did after the last investigation session was to re'route the outer plugs leads slightly. Time will tell " if it stays ok"
Hope so as I was not looking forward to taking the carbs of.