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 Post subject: carburetor issue
PostPosted: Thu Apr 06, 2017 11:22 am 
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Joined: Wed Apr 05, 2017 7:18 pm
Posts: 4
Whats your location?: South Dublin
Region: Eastern
What Minis have you?: 1974 Austin Mini
Hi all,
New to the club & just joined the forum. Hi!
I have a quick question for you & looking for advice.
My mini is 1974 Austin & 998cc.

When I start the car it idles perfectly but as the car warms up the idle goes up too.
It gets to the point that i nearly don't need to touch the accelerator to drive away at lights!

Any ideas out there?

Thanks

Adam


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 Post subject: Re: carburetor issue
PostPosted: Thu Apr 06, 2017 1:50 pm 
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Joined: Mon May 09, 2005 12:49 pm
Posts: 4559
Whats your location?: Ballyhooly, North Cork
Region: Southern
What Minis have you?: 1967 Morris Cooper, 1967 Austin Mini auto, 1968 Wolseley Hornet x2, 1981 Clubman Estate
Location: Ballyhooly North Cork
Hi Adam and welcome to the forum,

Have you topped up the oil in the carb dashpot?

Billy


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 Post subject: Re: carburetor issue
PostPosted: Fri Apr 07, 2017 12:38 pm 
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Joined: Wed Apr 05, 2017 7:18 pm
Posts: 4
Whats your location?: South Dublin
Region: Eastern
What Minis have you?: 1974 Austin Mini
Thanks for that Billy. I'll give that a go at the weekend & hope it does the trick!


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 Post subject: Re: carburetor issue
PostPosted: Fri Apr 07, 2017 5:30 pm 
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Joined: Mon Feb 07, 2005 11:55 pm
Posts: 2632
Whats your location?: Drogheda
Region: Eastern
What Minis have you?: Traveller
Turbo
Hornet
Equinox
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Location: LOUTH
Welcome to the club Adam.
You haven't mentioned the choke.
When the engine is cold it should require choke to bring the idle up to the right speed and than less choke as the engine heats up.If your car is idling ok cold without choke it will increase speed as the engine heats up.
The other thing would be an air leak on the inlet manifold that would expand as the engine heated up.

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 Post subject: Re: carburetor issue
PostPosted: Thu Apr 13, 2017 10:17 pm 
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Joined: Wed Apr 05, 2017 7:18 pm
Posts: 4
Whats your location?: South Dublin
Region: Eastern
What Minis have you?: 1974 Austin Mini
Hi Woody. Thanks for reply. I topped up the pot and no joy.
You might be onto something with the choke. When cold I only use a tiny bit of choke for maybe 2 seconds and it then runs perfectly. If I pull any more choke it kills it instead of bringing revs up?


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 Post subject: Re: carburetor issue
PostPosted: Mon Apr 17, 2017 8:10 pm 
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Joined: Tue Jul 18, 2006 11:15 pm
Posts: 2078
Whats your location?: Dún Laoghaire, Dublin
Region: Eastern
What Minis have you?: '93 SPi cooper
Location: Dún Laoghaire, Dublin
Hi Adam,
if you don't get it sorted i could pop round or you could come over to me and we'd have a look at it.
I'm in Deansgrange,
K.

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 Post subject: Re: carburetor issue
PostPosted: Wed Apr 19, 2017 7:14 pm 
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Joined: Wed Apr 05, 2017 7:18 pm
Posts: 4
Whats your location?: South Dublin
Region: Eastern
What Minis have you?: 1974 Austin Mini
Sorted it! In the end it was the tension spring on the throttle arm. James in Minifix threw another spring in and good to go. Thanks all for help and advice and hopefully bump into you soon. Adam


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