g'day all what would cause my mini when you start it up to put your foot down and it back fires out the carb?and when you put it in gear and drive it kind of surges power no power power no power? could this be because of carb getting too much fuel?

Timing is out

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"Show me the Mini!"

just been timed.....new plugs and points as well.....

could it be running too lean? you get backfire through the carb when the fuel mix is too lean, and backfire through the exhaust when too rich,

i know this is true as my old weber used to backfire through the carb on cold mornings when the air was denser, and caught fire to my air filter element once!

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tim
68 Deluxe 1293, HIF44, megajolt/EDIS4, daihatsu alternator..

'a mini is for life, not just for christmas!'

is there any oil in the Dash-Pot of the carby???

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No offence intended here but--> anyone writing a book about minis 30 years ago may not have experienced such worn or stuffed-with components as we are finding these days.

You should put your heart & soul into everything you do.

Distributor 180 degrees out

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"Show me the Mini!"

there is oil in the dashpot but may need topping up as when it backfires through the carb it shoots oil aout as well. dizzy is good.too lean u mea not getting enough fuel?.....thats what i was wondering....is it you wind it up you leesen petrol or wind it downyou lessen petrol?

Could be an air leak in the intake manfold somewere (usually gasket on the head).

You don't just haphazardly screw the mixture knob in an out or you will cause all kinds of problems, you need to get the manual and follow it step by step to give it a tune.

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SooperDooperMiniCooperExpertEngineering

All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.

um when i did my points condensor and leads i mixed up numbr 2 and 3 lead and that causes the sympton described by you. probaly not whats the cause but maybe just check it.



cheers TUCK3R

gaskeyt on the head you mean manifold gasket???.....would this cause it to backfire out the carb or exaust?

leak on the manifold gasket on the inlet ports would cause backfiring through the carb as it's diluting/leaning out the fuel mixture.

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tim
68 Deluxe 1293, HIF44, megajolt/EDIS4, daihatsu alternator..

'a mini is for life, not just for christmas!'

Is your advance working in the distributor and is your PCV in good order (I assume you have PCV?)

Ollli suffered what you are describing and this is one more easy thing to check.....especially since your distributor has been looked at recently.

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1969 Morris 1100 S Automatic

ahhhh......the interior smell of an old British car....

i only have single carb....and advance not conected up......