NGK plugs

[Pauarc]

All plug set to 1-1/8 out on air screws going to try no1 out a bit more

[Martin6]

Strange how they get slightly darker from 4 through to 1. 3 looks a bit damp?

[Pauarc]

After a 30 mile run a bit better I think they are looking better now not sure if they may be a bit weak now?

[Johnwebley]

Not to weak at all

In fact I would lean the tickover even more,



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[Martin6]

After a 30 mile run a bit better I think they are looking better now not sure if they may be a bit weak now?

Looking good. If it were me, I'd run like that for a few hundred miles and see how it goes.

[Pauarc]

Turned no 1 out a little more now all same colour but the tic over uneven if set at 1000  not sure 🤔 what maybe the problem runs well otherwise

[Martin6]

TBH, i wouldn't worry about it at all at only 1,000rpm. Set it to 1200rpm and I'd expect it will run evenly. Mine's similar, but very smooth at 1200rpm. I expect so much has to be spot on to idle evenly at 950rpm, hugely unlikely to get it like that, 50 years on, without major work, new carbs pistons, chains, remove all wear in the valve train... etc. Better to tune it to be a good mix for running.

[Pauarc]

Could this top seal be giving a vacuum leak as it’s damaged