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Misfire

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Waggles:
OK well I think it was points closing up, not sure why. will investigate fully when ( if ) I get home!

Checked plugs, all looked fine, cylinders 2-3 not firing tho. Cleaned plugs and swapped 1-4 for 2-3, no difference. Looked at points and 2-3 set seemed to have a smaller gap. Cleaned then and gapped by eye, no difference. check wiring to coils, all seemed OK, drained float bowls, all carbs have fuel. Have no multi meter with me so just went back to the points, fiddled again and turned motor over to see if both sets were sparking, and whaddya know, it started and ran fine!

Perhaps its like quantum physics and the very act of observing the points changed things!

Bryanj:
Bad connection in the rubber boot where the rear brake light and points wires join to the loom----regular fault after rebuid for some reason!

Waggles:
Do you know what, you may just have hit it! I did chase the points wire(s) up to that point just before she started OK so I probably jiggled that connection! I will have it apart and clean up at the weekend. She got me to work OK again today so it seems OK but better safe than sorry. I didn't really find anything wrong that TOTALLY convinced me so I think you are probably correct, I award you one housepoint old boy and see matron for an extra rum ration  ;)

Bryanj:
I really dont know why but it's happened to me 3 times on different bikes, put engine, in connect every thing up and when I went to start it was a bugger and only ran on 2, eventually found blue wire(all 3 times) pulled out inside boot and 'cos it's hidden inside there you don't see it.

Waggles:
Over the weekend I checked this connection. Bear in mind my motor has not been out of the frame, the points wire connections were together but rather on the loose side, so I cleaned and tightened them, reset points and timing and she is back to her old self again.

Can see why these wires can cause problems as they dont have any spare length at all so the slightest strain would pull them apart.

Will post this fact under 'hints and tips' as it seems likely to cause others problems, some more than others Bryan!  ;)

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