Puff of smoke when upshifting...

["Kurtis" <kurtisj123@cox.net>]

I know I've seen the answer to this before, but can't seem to track it down 
right now.  What does a puff of smoke (from the exhaust) during an upshift 
usually indicate?

BTW, sorry for the multiple posts on the TR4 Radio thread.  My e-mail 
program kept timing out with an error message indicating the message had not 
been sent.  Apparently it was being sent. :(

Kurtis Jones
Russellville, Arkansas
1963 TR4 - CT19389L
1959 AH Bugeye - AN5L23250
www.geocities.com/tr4_1963