21 replies to this topic

[miniboo]

Right where do i start!!

My mini is running really badly at the moment. I did think that the car was running rich. It has sat outside work all day and it started first time,without choke but doesnt tick over very well. I think because of the cold.

Anyway when i am driving it with the choke fully in it stutters and backfires when i put my foot down. If i pull the choke out it runs alot better. Now i thought that would indicate it running lean?

When i say backfiring i mean that it stutters and pops and backs and then jerks the car forward.

What do you think this could be?

i have just fitted an lcb and rc40. Its a 1275 engine and HIF38 with K&N replacememnt filter by the way.

It was doing this before i fitted it though. i know it needs tuning/rolling road but i am sure it wouldnt be running this badly!!

Could the timing affect this aswell?

[ashmeadant]

Ive had the same problem with another car. Reset the timings, this worked for me - no problems since! ....In that catergory anyway....

[miniboo]

so check and set the timing is what you did?

[minidaves]

choke make it run richer and if its cold it requires more fuel so at the moment your running pehapes on the lean side, use the choke

dave

[miniboo]

to get it to run well at all it needs the choke fully out all the way and even then the engine is struggling a bit

[crocstarr]

ive just bought a mini saturday and it does exactly the same, splutters and pops if you try an give it some. i have to pull the choke out, and then its fine. i think mine needs a rolling road/tune because its had a stg1 fitted.

[Dan]

Search for a recent topic about connecting up heated inlet manifolds.

[miniboo]

like i said it was doing this before i fitted the manifold

[Dan]

Ah.... Ok then. :nugget:

(perhaps I should read this more closely......)


Yes it needs tuning and yes it could well be running that badly.

[Papa Lazaroo]

You've probably already done this but have you checked your distributor cap? Its just mine was running with the same symptons as yours, I was pulling my hair out thinking it was timing, and it turned out to be lots of moisture and gunk on the points and in the dizzy.

[miniboo]

yeah i changed the leads,sparks,dizzy cap and rotor arm not long ago.

I have eletronic ignition so thankfully dont have to worry about points and gaps etc.

Its just everything else i have to worry about LOL

[miniallsort]

thats what mine use to do

[miniboo]

^^how did you fix miniallsort?

[Gogobroom]

I would still check the leads again and the dizzy ... I had a strange problem on one of my cars, started up like a scooby, sounded quite nice actualy, then settled down and drove fine. People had said to me check the leads and plugs ... i said no I only changed them a month back... it ended up been one of the leads, it was brand new and the end had fallen off causing a low contact ... doh .. just a thought for you anyway

[miniboo]

ok yeah i will check all the leads and stuff tomorrow anyway to make sure