Englishmaninwales Posted October 30, 2019 Share Posted October 30, 2019 I seem to have a small chronic fuel leak from the cold start devices on both carbs. Small amounts of fuel seems to come from around the rear air intake channels on the device and runs down onto the throttle spindle cover plate area and under the carb body, as the car is running. Over time eg this summer’s motoring, this has become an oily mess. Whilst I’m uncertain of the cause and I never use the cold start device, I wondered about fitting the cold start device elimination kits that I’ve seen available. Anyone have any thoughts on the cause of the leak (? worn / leaky starter valves) and advisability / experience on fitting this kit? Thanks Malcolm Link to comment Share on other sites More sharing options...
Paul Deslandes Posted October 30, 2019 Share Posted October 30, 2019 The Webber cold start device has been described as 'the spawn of the devil' and should be disconnected and never used because, as you have found, they invariably either stick and cause the engine to run very rich, or leak.As you suggest, the best thing is to remove them entirely as even with the blanking plates fitted the little pistons can still pop up and cause problems. There are a number of online threads about how to do it with DIY or proprietary kits. Google 'Weber cold start device removal'. I have done it but it was so long ago I can't remember the details!Paul Link to comment Share on other sites More sharing options...
Englishmaninwales Posted October 31, 2019 Author Share Posted October 31, 2019 Thanks Paul, that’s very helpful.Malcolm Link to comment Share on other sites More sharing options...
HendrixsWhiteStratReturns Posted October 31, 2019 Share Posted October 31, 2019 MalcolmJust to echo Paul's sentiments - I had them on my crossflow (Paul very kindly 'freed' them once when they were sticking) When I had the Webers refurbished I had them whipped out and blacked off, car runs SO much better now the damn things are history ! Link to comment Share on other sites More sharing options...
auyt Posted November 1, 2019 Share Posted November 1, 2019 If I can add my experience, just blanking as has been said doesn't sort the issue, this kit is the best way,http://www.dellorto.co.uk/wp-content/uploads/2016/02/CRK001sht16.pdf.I tried just the blacking plates and one of the cold start pistons got stuck full open when the car coughed on start and it took me ages to work out why the car was running rich.. bleeding obvious now. Link to comment Share on other sites More sharing options...
Englishmaninwales Posted November 1, 2019 Author Share Posted November 1, 2019 Yes that was the kit I saw, eliminating the cold start air jets, fuel starter valves and blanking off the air gallery in addition to the blanking plate.Thanks. Link to comment Share on other sites More sharing options...
barry watts Posted November 1, 2019 Share Posted November 1, 2019 HWS what did the refurbishment involve, was it a clean up and a service kit? Also who did you get to carry out the work. It's getting difficult to find a weber guru. Cheers baz. Link to comment Share on other sites More sharing options...
pugwash Posted November 1, 2019 Share Posted November 1, 2019 Hi Malcolm, I have no idea what the answer is but as you posted the same question on lotuselan.net I am curious as to what the engine is in!As you can see from my id photo, I have a foot in both camps.regardsMarkPS, I have the "Choke" cold start device on the Elan (Webers) but in over 20 years of ownership I have never touched it. Link to comment Share on other sites More sharing options...
auyt Posted November 1, 2019 Share Posted November 1, 2019 About the only thing that I would like is a hand throttle on start to hold the idle at 500 rpm. Link to comment Share on other sites More sharing options...
Englishmaninwales Posted November 2, 2019 Author Share Posted November 2, 2019 Mark, the engine is a twin cam (in my Elan rather than my Caterham); there is plenty of Weber experience here and I knew the response would be quicker :-) Link to comment Share on other sites More sharing options...
pugwash Posted November 2, 2019 Share Posted November 2, 2019 Thanks Malcolm Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted November 2, 2019 Member Share Posted November 2, 2019 About the only thing that I would like is a hand throttle on start to hold the idle at 500 rpm. Would you like suggestions?Jonathan Link to comment Share on other sites More sharing options...
7 wonders of the world Posted November 2, 2019 Share Posted November 2, 2019 Think that should be 1500rpm...?Have you tried the small pedal on the right..... Link to comment Share on other sites More sharing options...
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