[TR] TR6 Mistery Miss

[Dave1massey at cs.com]

In a message dated 9/13/2010 2:39:33 PM Central Daylight Time, 
TR250Driver at aol.com writes: 
> I took the TR6 south to Oxford, OH for the 6-PACK Trials last week,  
> probably less 600 miles total.  The Trials were great.  The Six had a  few 
> issues. 
> The first was a low RPM miss that caused her to chug some when  
> accelerating.  Usually in 3rd or 4th with OD engaged but not  always.  She 
> would chug 
> some regardless of speed but usually below  2500 rpm's.  Once above that 
> she 
> seemed happier with only a few  chugs. Not enough of a problem to leave me 
> 
> on the side of the road but very  annoying. 
> 

My TR6 had more of a stumble.  This was many years ago.  I regapped the 
plugs and it went away.  I see you have those Bosch things and regapping may 
not be an option but maybe some new plugs will give different results.

More recently (last week, actually) I had what sounded like a miss.  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.

There's a couple of Ideas.

Dave