You might want to have a look at the cam lobes. As has been
discussed here before, oil composition has changed with resultant
premature wear of flat tappet cams due to a lack of specific additives.
On 15-Sep-10, at 6:03 AM, triumphs-request@autox.team.net wrote:
> From: TR250Driver@aol.com
> Date: September 14, 2010 1:33:01 PM MDT (CA)
> To: Dave1massey@cs.com
> Cc: triumphs@autox.team.net, 6pack@autox.team.net
> Subject: Re: [TR] TR6 Mistery Miss
>
>
> In a message dated 9/13/2010 3:55:33 P.M. Eastern Daylight Time,
> Dave1massey@cs.com writes:
>
> . For
> some reason I decided to check my valve clearances and found two
> valves
> had no
> gap at all. (valve seat recession?) I regapped the valves and
> the miss
> went away.
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