runing problems

[mk1morris]

i have just put a mg metro engine in my mini. yesterday it was running fine but a little lumpy. i put this down to a fine tune needed but today its been very very lumpy miss-firing and undrivable
i have played with distributor timing to try and fix problems but no joy. i have changed the coil thinking it may be faulty but no joy. i checked the plugs are all sparking, they are but they were very sooty. So i cleaned them, put them back in and it was fine for 5 mins, then started being lumpy again. So i checked the plugs again and they were dry but sooty any ideas???

[Deleted]

Fuel mixture needs leaning off i think, someone may correct me if im wrong lol
daz

[MiniGT5]

Sounds about right to me they should be a nice carbon grey colour.

N

[mk1morris]

thanks guys all done still not 100% but running much smother the mixture was way out lol

[MiniGT5]

If it is running rich the exhaust will also be black and sooty. once it is setup right the exhaust will be a nice grey colour.

N

[mk1morris]

got it the best i can for now just going to put it in for a proper set up on the rollers

[monkeyjim]

As with all a series engines if you start mixing standard engines carbs , filters and exhaust manifolds with parts standard or modified from a differant type of a series you will have running issues and it will really need rolling roading to set it up properly .
Even if you are using all the mg metro carb inlet and air filter i bet your not using the standard mg exhaust system ........
of course you not , you just woudnt .
So thats why all these mixed up bits need fine tuning to make them work with each other .