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**KOY 23** · 11 January 2011, 16:57

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I had terrible starting when I got my car, it seemed to start on 4 cyls then the others came in. The problem was one of the choke discs was put in 180 degrees out, so was not enriching the mixture. Very simple fix once it had been found.
John

**Andy Rundell** · 11 January 2011, 17:21

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sounds to me like both carbs are set very rich, and perhaps out of balance (both flow and mixture) If it will start pretty-much without choke then that would add more evidence to the 'very rich' theory.

.......... Andy

**martin** · 11 January 2011, 18:10

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Hiya Don, welcome aboard. The right hand carb doesn't have a connection to the throttle, only the left one, you can just see a cam that operates it.
Your carbs need to be properly set up before you can decide if there's a problem. It doesn't sound at all serious. Where abouts are you ?

Martin.

**jleyton** · 12 January 2011, 02:48

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Hi Don

Welcome to the Forum and I guess if you've been 'lurking' for a while then you'll know what to expect

There's certainly no need to apologise for asking questiions - bring 'em on, the guys on here love them

Unfortunately, I haven't got the answer to your query, but I'll watch it with interest because my car is similar. It starts perfectly with the choke but then I have to push it straight back in to keep it running ok. Classic sign of richness but the plugs look ok ish :?

Anyway, as Martin said, it doesn't sound too serious, I just hope you can work it out with some help from here !

Montoiseau ?? InterestingFrench? Birds? or is it just a distinctive surname? :?

Cheers

Julian

**DJT** · 12 January 2011, 03:10

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Hi, and welcome.

Martin is correct. The nearside carb has a cam operated by the choke cable. This increases the revs whilst the choke is out. The cam needs to be well lubricated or it can stick. Whilst on the subject, it is important that you depress the accelerator pedal slightly whilst pulling the choke out to relieve pressure on this cam. Otherwise your choke cable won't last long and replacing it is a PITA.

As already said, get the carbs set up correctly for mixture and balance. Then look at the choke. Most Stags will require full choke to start from cold, but then will run with the knob pushed back in to about 1/2". As soon as you are clear of stop-start motoring or the temp gauge starts to rise, push it right in and she should run fine.

Dave

**Tdm** · 12 January 2011, 04:53

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DJT wrote:

Hi, and welcome.

Martin is correct. The nearside carb has a cam operated by the choke cable. This increases the revs whilst the choke is out. The cam needs to be well lubricated or it can stick. Whilst on the subject, it is important that you depress the accelerator pedal slightly whilst pulling the choke out to relieve pressure on this cam. Otherwise your choke cable won't last long and replacing it is a PITA.

As already said, get the carbs set up correctly for mixture and balance. Then look at the choke. Most Stags will require full choke to start from cold, but then will run with the knob pushed back in to about 1/2". As soon as you are clear of stop-start motoring or the temp gauge starts to rise, push it right in and she should run fine.

Dave

Agree with all the above, but once mine has started on full choke after just a few seconds I then push it in to the "1/2 inch point and leave it there for about a mile of running when it goes in all the way. Pulling the choke out about 1/2 inch just increases the tickover - doesn't richen the mixture in any way. Welcome to the Forum.

**montoiseau** · 12 January 2011, 12:41

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Thanks for all your replies, very helpful indeed.

I think it's probably worth me having someone set the carbs up properly, it sounds like there's not much point over-diagnosing until confident the basics are right. I'm in Scotland, in Fife - work in in centralEdinburgh- can anyone recommend a "stag friendly" garage eitherin my neck of the woods or the Lothians (or PM me with ones to avoid!).

I'm still intrigued by the difference in behaviour of the two chokes. John's comment on his choke disc being fitting 180degrees out is interesting. SWMBO is out this evening - so I may go and investigate.

To be clear (as I wasn't particularly) in my first post, I do need the choke fully out to start the engine, the problem is that it won't idle at all until the engine is warm - you need to keep your foot on the throttle - if you take it off the revs slowly fall until the engine dies.

It's the arrowed cam which I'm rotating, I may be getting confused but some of your replied imply the choke is only connected on the nearside carb - I've definitely got three cables in play - the throttle and two choke cables. The thing I'm rotating is arrowed in this super-big diagram:

I put a wee video up on youtube:

http://www.youtube.com/watch?v=_kuZ4mMftfA

If you can ignore the unecessary revving at the start you'll see me rotating the nearside choke at about 22 seconds in, with a corresponding rise in revs and the offside choke at about 30 seconds in, with a corresponging fall off in revs until I release it at about 35 seconds in.

Here's also a picture of one of the plugs, sooty for sure - but also a bit oily :-(

Montoiseau ?? InterestingFrench? Birds? or is it just a distinctive surname? :?

Julian, you're right my pseudonym is French in origin, it's the name of one of the summits in the French Jura. It wasthe hill behindmy housewhen I livednearGeneva a few years ago.

Don

**martin** · 12 January 2011, 12:54

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Hi Don, yes you have two choke cables, the left one rotates the cold start disc and slightly opens the throttle, the right hand one rotates the disc on that carb, but does not have the cam to open the throttle, as both carbs are linked by rods, one cam opens both throttles, they're meant to work as a pair. Your arrowed pic is the right hand carb, no cam. Don't worry about your plugs, that doesn't look bad.

Martin.

**milothedog** · 12 January 2011, 12:59

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Hi Don and welcome, If you look at the other carb (left hand)
you will see there is an adjustment under the choke linkage that controls the fast Idle speed when the choke is pulled out. If you have a manual it shows you how to get a base setting but you may find you have to go outside of this to get a good balance between choke and fast idle. if you don't have a manual, go to www.stagbytriumph.co.uk and you'll find one there.

Ian.

**Arbman Al** · 12 January 2011, 13:04

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Hi Don

Your carbs don't look like they are connected!

In the video, the part you put your thumb on to rev the engine should have a connecting link rod fitted to it:shock:

Have you got a spare connecting rod lying around somewhere?

Al

**martin** · 12 January 2011, 13:17

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Al's right you know, your left hand carb isn't connected, I'm surprised the old girl runs at all, you're only fuelling four cylinders.

Martin.

**montoiseau** · 12 January 2011, 13:44

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:shock:

...gets coat, heading for garage, more soon

**Arbman Al** · 12 January 2011, 14:18

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Having had a second look on the computer rather than the iphone the carbs are linked together - sorry if I misled you there.

Al

**montoiseau** · 12 January 2011, 14:23

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Think I'm alright - was just the angle the video was taken at...

Either that or I've just been out to the garage looking for the SOC equivalent of a "long stand"

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TV8 stromberg "chokes" behaving very differently

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