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[Healeys] Carb tsunami

Subject: [Healeys] Carb tsunami
From: linwoodrose at mac.com (Linwood Rose)
Date: Tue, 16 May 2017 20:41:01 -0400
References: <AMSPR05MB1000377453A646BAED217E4D4E60@AMSPR05MB100.eurprd05.prod.outlook.com>
Diaphragm?
Lin

Sent from my iPad

> On May 16, 2017, at 6:06 PM, ph <yosmovies at hotmail.fr> wrote:
> 
> We are working on my early phase 2 BJ8. Very standard car.very standard fuel 
> pump and system.
> 
> So, we've noticed that petrol was initially seeping out of the front carb, 
> HD8. Then the seepage seemed to get worse, almost as we looked at it. The 
> leak is on the front carb and the fuel seems- it's not easy to be sure-  it 
> seems to be coming out from where the choke cable hits the lever. Given 
> sufficient time and particularly a few attempts to start the car, then the 
> fuel comes out of the manifold overflow pipe. Plenty of it too.
> 
> Some observations:-
> 
> 1) both of the floats are good. 100%
> 
> 2) no fuel at all ever comes out of the float chamber overflow pipes
> 
> 3) the connections at the banjos are sound.no leaks there
> 
> 4) the jets??I don't know, are they Grose? They are kind of octagonal in 
> their long profile. They have a little spring inside, with traditional cone 
> shape at the top and little short, spring loaded, needle sticking out of the 
> bottom. One of these things appears to be white nylon/plastic plus brass and 
> the other appears to be some low grade silver coloured alloy. Both springs 
> appear to be functional and both jets can entirely stop fuel coming out. (ie 
> when I close them/push them home by hand). But we know nothing of these 
> things. Never seen one before.
> 
> 5) Not withstanding my suspicions of these seemingly complex little jets, we 
> think they are correctly setup. They are not dropping so far that they can 
> jam. No, we think that the jets are probably, note probably!!, OK.
> 
> 6) My uncle, who is over from England, is more used to HS4s and Webers but he 
> is wondering if the problem could be from the diaphragm. If it splits, that's 
> it, right? Fuel in the manifold, fuel on the floor??
> 
> 
> We'd really appreciate your accumulated wisdom. If we're to get the parts 
> over from the UK, we've got to order them yesterday!!
> 
> 
> Pierre-Henri 
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