Hi Allan: Here are my non-expert comments: Cyls. 3&4 are fed by the middle
carb. I'd expect both plugs to read about the same if it were a mixture
issue. Are the plugs oily at all? If so, perhaps it's a case of worn valve
guides, tho why only the last 3 cyls??? Do you get a noticeable puff of
blue smoke after running down a long hill at closed throttle? Any chance
the oil level is overfull?
Some real experts should be along soon.
Tom
----- Original Message -----
From: "Allan Reich" <areich@telus.net>
To: <triumphs@autox.team.net>
Sent: Tuesday, July 23, 2013 5:12 PM
Subject: [TR] Blue smoke under uphill load with TR6
> Greetings
> Strange smoke started coming out of my TR6 after long climb up steep hill
> at
> 65 mph in 4th gear overdrive. Also start smelling the oily smoke.
> Can run all day at high speed with no issues. This just started as I was
> on a
> similar ride last month with no issues.
> Ran home 100 miles no problems. Tested again yesterday on smaller but just
> as
> steep and started smelling it again and saw faint smoke.
> Compression between 145 to 160. Plugs 1,2,3 clean and 4,5,6 sooty. Car has
> cam
> and 3 strombergs (Richard Good stuff)
> Thought I would throw this out to experts for ideas
> Thanks
> Allan Reich
> Vancouver
> 1975 TR6
>
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