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 199 Posts Member #: 1277 Advanced Member Portsmouth |
12th Nov, 2008 at 08:06:01pm
Think this is the problem i have got but im not sure.
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 3692 Posts Member #: 1833 Formally mini_majic Auckland, New Zealand |
12th Nov, 2008 at 08:25:23pm
carb icing? |
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 11046 Posts Member #: 965 Post Whore Preston On The Brook |
12th Nov, 2008 at 09:22:26pm
Rich missfire due to lack of manifold heating in cold weather, causing high fuel film on the manifold and slugging liquid fuel into the engine?
On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be... So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'... On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........ |
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199 Posts Member #: 1277 Advanced Member Portsmouth |
12th Nov, 2008 at 09:54:38pm
That might be the problem sprocket, because im not running a heated manifold.
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3692 Posts Member #: 1833 Formally mini_majic Auckland, New Zealand |
12th Nov, 2008 at 09:56:34pm
i would stick the heating back on. that way you can see easily if it has worked or not without thinking that you havent leaned it off enough. then leaning it off more and potentially causing damage. |
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1641 Posts Member #: 178 Post Whore stowmaket suffolk |
13th Nov, 2008 at 08:55:03am
yep i will go with that i had same problem last year when cold, ran like shit unless flat out or cruise then when idling and pulling away id didn t like it.
always looking for them bigger bunches of bannanas |
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2497 Posts Member #: 1954 Post Whore Luton Bedfordshire |
13th Nov, 2008 at 09:31:29am
On 12th Nov, 2008 Shaun87 said: The best air fuel ratio for an internal combustion engine is 15:1 Your running lean all the time.
Think this is the problem i have got but im not sure. My fueling seemed alright i thought, with 14:1 idle, 12 - 13:1 cruise and 10 -11:1 full load. But after 15- 20minutes of driving, when comming off of the throttle and coasting, it will start struggling to idle and sometimes even cut out. The A/f falls off of the lean side of the gauge and the revs are up and down. If i rev'd it off idle it would normally cut out, but sometimes if i come up to a roundabout slowly using the gears, and have to stop it will be ok and it will idle ok, untill i rev the engine and it will start struggling to idle or cut out. If it cuts out, it can sometimes be hard to restart the engine. Anyone think this is Fuel evapourating or something else? If it is Fuel Evapourating, what could be causing it to get so hot? I have a heatsheild based on Jasons design with lots of heat sheild cloth. Edit: Forgot to say, The carb is really cold to touch, not warm at all. Since when has keeping heat in a mini engine bay been an issue! Getting rid of it has always been the bane of cars fitted with turbo charged lumps. Own the day
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 1849 Posts Member #: 672 The oversills police Oslo, Norway |
13th Nov, 2008 at 10:54:55am
On 13th Nov, 2008 Mr Joshua said:
On 12th Nov, 2008 Shaun87 said: The best air fuel ratio for an internal combustion engine is 15:1 Your running lean all the time.
Think this is the problem i have got but im not sure. My fueling seemed alright i thought, with 14:1 idle, 12 - 13:1 cruise and 10 -11:1 full load. But after 15- 20minutes of driving, when comming off of the throttle and coasting, it will start struggling to idle and sometimes even cut out. The A/f falls off of the lean side of the gauge and the revs are up and down. If i rev'd it off idle it would normally cut out, but sometimes if i come up to a roundabout slowly using the gears, and have to stop it will be ok and it will idle ok, untill i rev the engine and it will start struggling to idle or cut out. If it cuts out, it can sometimes be hard to restart the engine. Anyone think this is Fuel evapourating or something else? If it is Fuel Evapourating, what could be causing it to get so hot? I have a heatsheild based on Jasons design with lots of heat sheild cloth. Edit: Forgot to say, The carb is really cold to touch, not warm at all. Since when has keeping heat in a mini engine bay been an issue! Getting rid of it has always been the bane of cars fitted with turbo charged lumps. maybe try to talk about something you know... Carb icing is due to the pressure difference in the air in the carb, and makes the carb ice up. this can also happen if its 15 degrees outside... 15:1 is lean, 14.7:1 is stoch and anything less (ie 12:1) is rich. |
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 9812 Posts Member #: 332 Resident Cylinder Head Modifier Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem |
14th Nov, 2008 at 02:43:40am
re plumb the inlet manifold through the heater matrix and take it from there
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