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Advice on engine problem

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Dazza215:
Check your points as well as they are common on 2 and 3, 1 and 4.

petermigreen:

--- Quote from: Dazza215 on July 07, 2017, 09:42:25 AM ---Check your points as well as they are common on 2 and 3, 1 and 4.

--- End quote ---
Same for condensers

sprinta:
The bike has electronic ignition fitted, so points and condensers are out of picture.

I have receipts showing that gen head gasket was used.

I note that main jets are 110 and pilots 40. All air screws around 1/2 turn out? UK K2.

sprinta:
Primary resistance of coil both 4.8 ohms.

Swapped the HT leads of No's 2 and 3 over and did around 50 miles. The black sooty plug has now moved No 3, see photos, No 4 on left. So is that indicating that there is something wrong with that particular ht lead?

With No 2 now showing a more normal colour can I now rule out seal or piston/ring as being the cause?

K2-K6:
Start it tonight in a real dark place and have a good look at that HT lead to see if it's tracking out to earth anywhere, it's one of the quickest ways to find a leak in HT systems. You may have to take the tank off to get a good view of the first parts of the leads.

Sounds like progress though as you've got it to move around and so giving you a direction.

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