[Mgs] [MG-MGB] Rough Running

[Paul Root]

I would say you remove the hose from the carb to the brake booster. 


> On Sep 5, 2016, at 4:00 PM, Dan DiBiase d_dibiase at yahoo.com [MG-MGB] <MG-MGB at yahoogroups.com> wrote:
> 
> 
> Paul, the idea of brake fluid being pulled into the carb is interesting - how would I tell? 
> 
> I am running the automatic water choke on the Z-S carb. I do have a manual choke conversion kit I was thinking of installing.
> 
> Thx, Dan
> 
> 
> From: "Paul Root ptroot at gmail.com <mailto:ptroot at gmail.com> [MG-MGB]" <MG-MGB at yahoogroups.com <mailto:MG-MGB at yahoogroups.com>>
> To: MG-MGB <MG-MGB at yahoogroups.com <mailto:MG-MGB at yahoogroups.com>> 
> Cc: MG List <mgs at autox.team.net <mailto:mgs at autox.team.net>>
> Sent: Monday, September 5, 2016 3:35 PM
> Subject: Re: [MG-MGB] Rough Running
> 
> 
> 
> My first thought is that the power brake diaphragm broke and you are sucking break fluid into the carb.
> 
> Plugs look really rich.  Do you have a manual choke or the automatic water choke? That could be gummed up as well.
> 
> 
>> On Sep 5, 2016, at 11:08 AM, Dan DiBiase d_dibiase at yahoo.com <mailto:d_dibiase at yahoo.com> [MG-MGB] <MG-MGB at yahoogroups.com <mailto:MG-MGB at yahoogroups.com>> wrote:
>> 
>> 
>> Hi - last year, my '76B (with '75 engine and single Z-S carb) died while I was out driving and would not restart. Once back home, I managed to get it to start but it runs very rough and
>> generates some light smoke - not dense clouds, and not white (like with a head gasket leak) but stinky none-the-less. I posted a video here -
>> 
>> http://s24.photobucket.com/user/ddibiase/media/1976%20MGB%20Engine%20Work/6C2F4746-A8C6-4D19-BA08-399597F43772_zpsvgtqyk59.mp4.html <http://s24.photobucket.com/user/ddibiase/media/1976%20MGB%20Engine%20Work/6C2F4746-A8C6-4D19-BA08-399597F43772_zpsvgtqyk59.mp4.html>
>> 
>> That gives a sense of idle roughness, if not the light smoke... The tach is steady at idle. 
>> 
>> I've replaced spark plugs and distributor rotor, as well as cleaned the contacts in the plug leads. Just installed a new electronic fuel pump as the old one crapped out. Lines are clear
>> and fuel filter fills nicely. Carb was rebuilt about 4 years ago and before the car died on me last year, the car ran very well. I did open it up to check the diaphragm and floats, they are fine
>> and the carb was clean inside. Car has about gas, most from last year but with 2 gallons from today added.
>> 
>> I did not try to drive it as the brakes need to be bled....
>> 
>> I've changed jobs recently and now have time to get this car back on the road and need some help as to where to start....
>> 
>> Thx,
>> 
>> Dan D
>> '76B, '65B
>> Central NJ USA
>> 
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> Posted by: Dan DiBiase <d_dibiase at yahoo.com <mailto:d_dibiase at yahoo.com>> 
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