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Toymods » Tech & Conversions » 18RC & Weber 32/36 hesitiation and Backfiring. Show: Today's Posts  :: Show Polls  Email to friend

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splbound Occasional Poster Registered: May 2002	Re: 18RC & Weber 32/36 hesitiation and Backfiring. Sun, 08 December 2002 12:19 Hi Guys, Thanks for the reply's.... This is happening even when the car is warmed up... I definitely didn't have these hesitation problems when I had the old carby (when it was working properly). Either that or I couldn't really notice as the engine would bog down like that anyway when I drop the clutch . The engine and carb setup does definitely sing when I gradually accelerate and totally changes note when have full throttle at higher rpms. I do see a very vair amount of fuel being squirted down the throat and I did just fully rebuild the carby so I know it it isn't a mechanical problem with the carb itself. If it's something I have to live with... so be it... but it would be nice if I can just hammer down the accelerator whenever I want... I found this regarding weber carbys and MGB's which seems liek the exact problem ... ........Found this info............ WEBER 32/36 DGV (all MGB's 1963-1980) While a very reliable carb/manifold set up, a disadvantage with this carburetor is the fact that the primary venturi accounts for two thirds of the throttle open position (no CFM* figures are given for this position) with the secondary venturi becoming active in the final one third of throttle movement. This carburetor requires excessive initial ignition timing advance to avoid stumble on take off (if the ignition timing was retarded, we would have to open the primary throttle plate to obtain the necessary idle; this would expose the progression bleed holes which in turn would require that the idle mixture be leaned to compensate for this richer mixture condition. The end result being very little progressive richening upon further throttle opening, especially at snap throttle and so the stumble). Carburetor can be modified to allow the primary & secondary throttle plates to open simultaneously plus modifications to the progression circuit and accelerator pump. Unfortunately, the company that used to provide this service no longer offers this modification. Maybe a search on the web will turn up a company that can help you. .........End........... Maybe this can shed a light on what is happening??? I think it's exactly what is happening on my car. [Report message to a moderator]

	Subject	Poster	Date
	18RC & Weber 32/36 hesitiation and Backfiring.	splbound	Sat, 07 December 2002 13:27
	Re: 18RC & Weber 32/36 hesitiation and Backfiring.	M.W.P.	Sun, 08 December 2002 03:20
	Re: 18RC & Weber 32/36 hesitiation and Backfiring.	blackRA28	Sun, 08 December 2002 08:36
	Re: 18RC & Weber 32/36 hesitiation and Backfiring.	splbound	Sun, 08 December 2002 12:19
	Re: 18RC & Weber 32/36 hesitiation and Backfiring.	M.W.P.	Sun, 08 December 2002 15:02
	Re: 18RC & Weber 32/36 hesitiation and Backfiring.	blackRA28	Sun, 08 December 2002 15:10
	Re: 18RC & Weber 32/36 hesitiation and Backfiring.	M.W.P.	Sun, 08 December 2002 15:13
	Re: 18RC & Weber 32/36 hesitiation and Backfiring.	blackRA28	Sun, 08 December 2002 15:46
	Re: 18RC & Weber 32/36 hesitiation and Backfiring.	ra23celicachick	Mon, 09 December 2002 21:45
	Re: 18RC & Weber 32/36 hesitiation and Backfiring.	M.W.P.	Tue, 10 December 2002 05:44
	Re: 18RC & Weber 32/36 hesitiation and Backfiring.	splbound	Tue, 10 December 2002 16:25
	Re: 18RC & Weber 32/36 hesitiation and Backfiring.	ra23celicachick	Tue, 10 December 2002 21:37
	Re: 18RC & Weber 32/36 hesitiation and Backfiring.	jesseT18	Sat, 31 July 2004 03:09
	Re: 18RC & Weber 32/36 hesitiation and Backfiring.	ehendrikd	Sat, 31 July 2004 12:54
	Re: 18RC & Weber 32/36 hesitiation and Backfiring.	allencr	Sat, 31 July 2004 22:22
	Re: 18RC & Weber 32/36 hesitiation and Backfiring.	M.W.P.	Sat, 31 July 2004 08:57

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