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Running rich
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Topic: Running rich (Read 1664 times)
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Wangler
Megaposter
Posts: 300
Running rich
«
on:
15 February, 2022, 02:17:18 PM »
My S3 1.3 Coupe engine runs very well, but judging from the plugs (NGK BP7ES) I think it may be running a little rich. Is there a way of adjusting the fuel/air ratio or is it a case of getting smaller jets? Before anyone asks, the air filter is good!
I use 99 octane zero ethanol with Castrol Valvemaster
If smaller jets are the way forward, does anyone have a recommendation please.
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Fulvia Coupe 1976
Fulvia Coupe 3 1975
lancialulu
Press Officer
Permanent resident
Posts: 5021
Re: Running rich
«
Reply #1 on:
15 February, 2022, 02:25:50 PM »
No to smaller jets!! (Unless they are not standard in the first place). The best way to get a better feel for correct running is to go for a fast run and stop the and pull the plugs. NGK BP7ES are good for Fulvia. Most Fulvias show a sooty plug when idling for a while.
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Its not the winning but taking part! or is it taking apart?
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Wangler
Megaposter
Posts: 300
Re: Running rich
«
Reply #2 on:
15 February, 2022, 02:34:39 PM »
They're NGK BP7ES - pretty new.
Yes, I've certainly found that they carbon up bit if it's idling and in the winter it doesn't get the chance for a bit of a blast. Getting the engine to normal temperature in the garage as I do a few times over the winter isn't going to do it. I'll do as you say when there's a nice day.
Many thanks
R
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Fulvia Coupe 1976
Fulvia Coupe 3 1975
dhla40
Senior Member
Posts: 187
Re: Running rich
«
Reply #3 on:
16 February, 2022, 08:55:04 AM »
During the winter when just doing local trips I use BP6ES plugs which are more resistant to fouling, in the summer for motorway use BP7ES are ok.
Sean
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1976 1.3s coupe
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1976 alfa GT
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