I can't see how this is is anything to do with a rich mixture. If it isn't
poorly seating valves then I would guess at broken/stuck compression rings.
John Kipping
----- Original Message -----
From: "Simon Rasmussen" <Simon@telephonestogo.ca>
To: "Friends of Triumph" <fot@autox.team.net>
Sent: Wednesday, May 21, 2003 2:20 AM
Subject: Rich mixture on 2&3
> I hope someone on the list can offer an explanation and solution to a
problem
> I've never seen before.
> My TR4A is running rich withg sooty black plugs on cylinders 2 and 3, but
> perfect coffee with triple cream colour on 1 and 4. This can't be carb
> adjustment since either the front or back pair should be affected. I also
> don't think it's oil since the valves and guides are nearly new, about
3,000
> miles and the exhaust does not seem smokey.
> I had the head off over the winter, the problem was obvious from the
colour of
> the valves, and I noticed a couple of stripped studs on the exhaust
header,
> which I replaced and tightened up properly, but there's no improvement.
> Any insights or suggestions welcomed. Thanks.
> Simon, WOFTAM Racing.
>
> Regards,
> Simon Rasmussen
> Sales Manager - Telephones To Go
> Email: Simon@TelephonesToGo.ca
> Mobile: (416) 565-0031
> Tel: (416) 650-0000
> Fax: (416) 650-5751
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