[Mgs] [MG-MGB] Rough Running

[Paul Root]

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 [MG-MGB] <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
> 
> __._,_.___
> Posted by: Dan DiBiase <d_dibiase at yahoo.com <mailto:d_dibiase at yahoo.com>> 
> Reply via web post <https://groups.yahoo.com/neo/groups/MG-MGB/conversations/messages/59356;_ylc=X3oDMTJxNTJiM2tsBF9TAzk3MzU5NzE0BGdycElkAzI5MTIzNTIEZ3Jwc3BJZAMxNzA2MDM0NDQ3BG1zZ0lkAzU5MzU2BHNlYwNmdHIEc2xrA3JwbHkEc3RpbWUDMTQ3MzA5MTczNA--?act=reply&messageNum=59356>	•	Reply to sender  <mailto:d_dibiase at yahoo.com?subject=Re%3A%20Rough%20Running>	•	Reply to group  <mailto:MG-MGB at yahoogroups.com?subject=Re%3A%20Rough%20Running>	•	Start a New Topic <https://groups.yahoo.com/neo/groups/MG-MGB/conversations/newtopic;_ylc=X3oDMTJlZHQ5Z2tuBF9TAzk3MzU5NzE0BGdycElkAzI5MTIzNTIEZ3Jwc3BJZAMxNzA2MDM0NDQ3BHNlYwNmdHIEc2xrA250cGMEc3RpbWUDMTQ3MzA5MTczNA-->	•	Messages in this topic <https://groups.yahoo.com/neo/groups/MG-MGB/conversations/topics/59356;_ylc=X3oDMTM2OWtwMDhoBF9TAzk3MzU5NzE0BGdycElkAzI5MTIzNTIEZ3Jwc3BJZAMxNzA2MDM0NDQ3BG1zZ0lkAzU5MzU2BHNlYwNmdHIEc2xrA3Z0cGMEc3RpbWUDMTQ3MzA5MTczNAR0cGNJZAM1OTM1Ng--> (1)
>  Have you tried the highest rated email app?
>  <https://yho.com/1wwmgg>With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage.
> VISIT YOUR GROUP <https://groups.yahoo.com/neo/groups/MG-MGB/info;_ylc=X3oDMTJlZXVnZ3ZnBF9TAzk3MzU5NzE0BGdycElkAzI5MTIzNTIEZ3Jwc3BJZAMxNzA2MDM0NDQ3BHNlYwN2dGwEc2xrA3ZnaHAEc3RpbWUDMTQ3MzA5MTczNA-->
>  <https://groups.yahoo.com/neo;_ylc=X3oDMTJkdTVyOGg5BF9TAzk3NDc2NTkwBGdycElkAzI5MTIzNTIEZ3Jwc3BJZAMxNzA2MDM0NDQ3BHNlYwNmdHIEc2xrA2dmcARzdGltZQMxNDczMDkxNzM0>• Privacy <https://info.yahoo.com/privacy/us/yahoo/groups/details.html> • Unsubscribe <mailto:MG-MGB-unsubscribe at yahoogroups.com?subject=Unsubscribe> • Terms of Use <https://info.yahoo.com/legal/us/yahoo/utos/terms/>
> .
>  
> 
> __,_._,___

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/mgs/attachments/20160905/2b55b6f6/attachment.html>