Turning nut in engine turns up revs?

[kingzdjc]

Hi guys,

Could someone please tell me what the two nuts are in the engine? With one, you turn it to alter engine revs???

I'm asking because the garage I got the Minor from told me I need to turn the nut if the engine doesnt tick over, which causes the engine to cut off. I was driving the Minor for a couple of hours a couple of days ago, and as the engine got warmer, the engine felt as though it wanted to cut out. This was resolved by turning this nut, for which I have no name??? Is this normal to need to turn this when the engine gets warm?

[les]

You need to be a little clearer, for example, where are these nuts that you refer to, are they on the carburetter? If so one is for adjusting the mixture (at the bottom of the carb) the other is the throttle cable adjuster.

[LouiseM]

And as a new Minor owner it's worth getting a workshop manual so you can find out what & where everything is

[bmcecosse]

No need to turn your nuts as the engine heats up....... I suspect only one of them is a 'nut' anyway.....
Does any of this look familiar - do you see the 'nuts' there?? http://www.moss-europe.co.uk/Shop/ViewP ... exID=17080

[kingzdjc]

And as a new Minor owner it's worth getting a workshop manual so you can find out what & where everything is

What is the best manual to get then?

[bmcecosse]

The official BMC manual of course...... PM sent with useful details.......

[JOWETTJAVELIN]

There are two little screws on the carb and then there is the main jet adjusting nut.

One of the small screws simply adjusts the idle speed as it is a throttle stop (essentially it is like holding your foot on the gas pedal to increase revs, but for much finer idling adjustment).

The other small screw is to do with the choke, when it is pulled out this screw should be adjusted so that the engine ticks over faster when cold starting, helping it keep going. On some carbs you can set this screw so that pulling the choke out 1/4" will increase the idle without affecting mixture (as it is connected with the throttle stop).

The main jet adjusting nut is at the base of the carb and shouldn't be touched unless you really are buring too rich or lean a mixture - check the spark plugs after a good run.