Dear All, Many thanks for all the helpful advice. I have now traced the twin causes of the problem, and solved them. The causes were (a) loose battery terminal connections and (b) inaccurate rev counter.
The rev counter is pretty accurate at higher revs, but below 1000 rpm it can read as much as 100-150 rpm high. In other words, when I thought I was ticking over at 850, I was ticking over at 700-750. Given the poor connections at both battery terminals, the engine lost at least 250 revs when the lights were switched on, leaving the poor car trying to run at about 450 rpm. Altering the idle speed to a genuine 850 rpm, and tightening the loose connections, has meant that the engine speed drops by about 50 rpm when the lights are switched on, and there is no sign of it stalling out. :-) James, are you taking your idle speed from your rev counter, or from an independent test machine? I can't get Carly to idle happily at 400 - nor would I really expect to. Maybe your rev counter is reading a little low? ATB -- Mike Ellie - 1963 White Herald 1200 Convertible GA125624 CV Connie - 1968 Conifer Herald 1200 Saloon GA237511 DL Carly - 1977 Inca Yellow Spitfire 1500 FH105671 /// [EMAIL PROTECTED] mailing list /// Send admin requests to [EMAIL PROTECTED] /// or try http://www.team.net/cgi-bin/majorcool /// Archives at http://www.team.net/archive /// Send list postings to [EMAIL PROTECTED] /// Edit your replies! If they include this trailer, they will NOT be sent.
