[Healeys] Carburettor help

[David Nock]

Loosen the linkage between the carbs so they work indepently. The slow the idle speed down on the front carb and bring the rear one up until they are equal. 
If that will not fix it then if you removed the throttle plates they were not set correctly and you will need to remove the carbs to re set the throttle plate with the idle screw backed off. Make sure the the plates are sealing off completely. If not loosen the shaft screws and move the plate until they almost completely seal all the way around.


David Nock
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209 948 8767
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From: Michel Murphy 
Sent: Thursday, June 27, 2019 4:32 PM
To: Healey List 
Subject: [Healeys] Carburettor help

Hi everyone, 

I am at the point where I'm trying to tune my carburetters for my BJ7.  The engine was rebuilt along with the carbs. I set up the carbs as per the SU workshop manual to pre-tuning setting: throttle screw backed off, turned jet adjusting nut/screw down two turns and turn the fast-idle adjusting screw until they are well clear of the cam. 

The car starts well enough without choke engaged, but the engine idles at 2000 RPM even after left running for 5-10 minutes. The rear carb doesn't seem to have any suction unlike the front carb (I put my hand in front of the carb for this test). Any ideas why the rear carb does not have any noticeable suction? I suspect the high idle is due to rear carb not functioning properly.

Any help would be appreciated.

Regards,
Mike
'63 BJ7


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