I replaced the battery and got the mini started( on the old fuel that was in it)
Starts up fine from cold and doesn't smell rich.
If revved around 2.5 rpm it has a miss fire that clears @ 3k if you boot it around this rpm it will hold back and then clear and rev fine thought the rev range when driving.
At first I thought it could have been old fuel,
I have now done over 200 miles since getting it and has new fuel in it.
I have changed the plugs and coolant temp sensor as I thought it might be these.
When I removed the plugs today Cylinder 2-3 the plugs are very black 1-4 are slightly lighter black.
What I am after is some pointers as to what could be wrong without changing everything insight
Edited by ROD, 03 December 2019 - 10:34 AM.