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| blowing black smoke https://www.ausmini.com/forums/viewtopic.php?f=2&t=69827 |
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| Author: | minilee [ Wed Mar 30, 2011 9:52 pm ] |
| Post subject: | blowing black smoke |
hey guys just having problem with my car , it all started when noticing the car is blowing alot smoke wen driving , especially when changing gears , i have spoken to a few members in regard to this problem and they have told me i might be running too rich . it idles funny , its sounds almost lumpy like i got big cams , i dont noe if im making any sense but its wasting alot of petrol. i try playing with the screw attach to the carbby , to lean it up but i dont really know where it should sit at ? the car still blowing smoke and now sounds like its going to cut out ? sound heaps more lumpy .... what is the problem , needs a service and tune up ?? |
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| Author: | TheMiniMan [ Wed Mar 30, 2011 10:16 pm ] |
| Post subject: | |
Firstly check that the choke isn`t stuck on then tell us how it runs after that edit--> the cjoke operates the little jet under the carby,,, it pulls that jet down which in turn, richens the mixture & altho your choke "Cable" may """SEEM""" like it`s all the way home,,, well that littlle black plastic jet on the bottom of the carby may not be all the way home |
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| Author: | miniobsessed [ Thu Mar 31, 2011 1:24 am ] |
| Post subject: | |
Which screw did you adjust? As it sounds like you have decreased your idle which has nothing to do with your mixture... The NUT that you need to adjust to alter the mixture (to a point - it's really the needle in the carby that is controlling the mixture) is under the dashpot between the carb body and the jet. |
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| Author: | minilee [ Thu Mar 31, 2011 6:32 am ] |
| Post subject: | |
I have turn the screw under the , mayb your right as I'm turning anti clockwise it starts to rev higher , I think I'm just going to take it to some n get it check |
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| Author: | poeee [ Thu Mar 31, 2011 7:05 am ] |
| Post subject: | |
Reach under the carb and push upwards on the jet. They can sometimes stick open as matt has said. |
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| Author: | Irish Yobbo [ Thu Mar 31, 2011 11:37 am ] |
| Post subject: | |
minilee wrote: I have turn the screw under the , mayb your right as I'm turning anti clockwise it starts to rev higher , I think I'm just going to take it to some n get it check
Imagine the mixture adjustment nut like a screw - screw it into the carby to lean it off, screw it out to enrich. I'd also check your air filter, since a poor filter will restrict air and enrich the mixture. Also check your oil filler cap and dipstick, make sure they have a reasonable seal. The engine usually runs with a slight vacuum, and having air running in can make it go 'funny.' Not exactly sure what it does, but just know from experience. |
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| Author: | Lillee [ Thu Mar 31, 2011 3:00 pm ] |
| Post subject: | |
From what minilee has described to me it's one of two things, the choke is stuck out or the mixture screw it totally wide open. Since he has fiddled with the mixture all the way closed and it still runs then I suggest it's the choke stuck open. Bring her over as planned this weekend and I'll take good care of it, along with all the other stuff we said we'd do... P.S. I charge by the Horse Power gained/recovered  
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| Author: | minilee [ Thu Mar 31, 2011 9:35 pm ] |
| Post subject: | |
yobbo your right my air filter was so dirty and it was described as a fossil from the dinosaur age by tony from padstow mini took it to a specialist today for a check up and discovered that it was onli running on 3 cylinder , due to old spark plugs (blown ) change air filter and plugs now running normal again , but was told that the carbby has an issue not major but the whole car needs a good tune . thanks lillee again , im learning something new everyday , one of it dont play around with things im unsure about 
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| Author: | minilee [ Thu Mar 31, 2011 9:36 pm ] |
| Post subject: | |
yobbo your right my air filter was so dirty and it was described as a fossil from the dinosaur age by tony from padstow mini took it to a specialist today for a check up and discovered that it was onli running on 3 cylinder , due to old spark plugs (blown ) change air filter and plugs now running normal again , but was told that the carbby has an issue not major but the whole car needs a good tune . thanks lillee again , im learning something new everyday , one of it dont play around with things im unsure about
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