On 11 Oct 2006 at 22:40, OKCSpitfire wrote: > I notice that the needle was flat on one side,... > Two days ago I pulled the top of the carb off and dumped > some of the damper oil 5w 20 and for the past > two days it drive like it is suppose to
The flat-spotted needle should make the mixture run rich. The effect of the dashpot oil is to keep the mixture from becoming too lean whenever you move the throttle to a more open position. In theory this happens only during and slightly after movement of the throttle, not during simple cruising. But in practice you may be moving the throttle continuously up and down a little so that the dashpot is in constant motion. By dumping some of (or perhaps all of) that oil you may have reduced the non-leaning effect, compensating somewhat for the fact that the needle is letting too much gas in. At least that's the theory of how it should work. If it was mine I'd replace the needle (call Joe Curto joecurtoinc.com) and restore the dashpot oil. On the other hand, someone might just tell you that on the model 221B Baker St carbs on '76 Spitfire the needle was supposed to be flat. -- Jim Muller [EMAIL PROTECTED] '80 Spitfire, '70 GT6+ Your messages not reaching the list? Check out http://www.team.net/posting.html === This list supported in part by The Vintage Triumph Register === http://www.vtr.org === Help keep Team.Net on the air === http://www.team.net/donate.html === unsubscribe/change address requests to [EMAIL PROTECTED] or try === http://www.team.net/cgi-bin/majorcool === Other lists available at === http://www.team.net/mailman/listinfo === Archives at http://www.team.net/archive === http://www.team.net/the-local === Edit your replies!
