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Nick Turley
May 31, 2017 - 7:04PM
Re: Petrol/air mixture adjustment

Robbie
I would strongly suggest that you try hotter plugs.
I have found that with 18mm plugs the Champion D21 and similarly with 14mm plugs NGK B5HS.
Gives great results in Austin Sevens.
All available from Green spark plug Co.
I personally believe it is a change in the composition of fuel that has created this problem.
Hope that succeeds for you.
Nick

Location: The Centre of the Universe

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May 31st, 2017 - 7:04 PM
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Robbie
May 31, 2017 - 8:18PM
Re: Petrol/air mixture adjustment

Thanks All
Nick, just ordered a set of NGK's from the green spark plug co and will feedback results..
Thanks for the advice 😀

Location: Horsham

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May 31st, 2017 - 8:18 PM
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Frank Shore
Aug 1, 2017 - 5:44PM
Re: Petrol/air mixture adjustment

I have a similar problem. Approx how many turns anticlockwise when screw is tight should I give to air mixture screw

Location: rural northants

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Aug 1st, 2017 - 5:44 PM
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Robbie
Aug 1, 2017 - 5:53PM
Re: Petrol/air mixture adjustment

I installed the new plugs and this certainly made a difference. Running a lot lot better!!
My air mixture screw is 1/2 turn anticlockwise from tight, but to be honest it doesn't make much difference other than at idle

Location: Horsham

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Aug 1st, 2017 - 5:53 PM
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Ian Williams
Aug 2, 2017 - 5:50AM
Re: Petrol/air mixture adjustment

Robbie

My air mixture screw is 1/2 turn anticlockwise from tight, but to be honest it doesn't make much difference other than at idle


It is not supposed to Robbie! Set it to gain the fastest idle with no hunting

Location: NZ

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Aug 2nd, 2017 - 5:50 AM
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