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Spark Plug - 96 Rover Mini Cooper 35 (Japanese Market Model)
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Author:  Syd [ Tue May 10, 2022 5:52 am ]
Post subject:  Spark Plug - 96 Rover Mini Cooper 35 (Japanese Market Model)
Attachment:
IMG_2314.jpeg
Hello,

I have the above Mini Copper which is fitted with NGK BPR6ES spark plugs and running on unleaded 95 petrol. I am looking to get a new set of plugs so I removed one of the plugs the other day which seems a little lean to me (see the attached photo), however maybe this is all correct for this Mini - also, are the NGK BPR6ES plugs correct for this model and if so, what gap should they have? Cheers
Author:  Steam [ Tue May 10, 2022 7:42 am ]
Post subject:  Re: Spark Plug - 96 Rover Mini Cooper 35 (Japanese Market Mo
BPR6ES are the correct plugs and the gap should be the standard 35 thou.
I would suggest 98 unleaded
The plug does look a little lean but you did not say whether it is a carb or injection.
Author:  simon k [ Tue May 10, 2022 9:13 am ]
Post subject:  Re: Spark Plug - 96 Rover Mini Cooper 35 (Japanese Market Mo
Injected I reckon, doesn't sound like it would have been converted to carb..

If it's just one of the plugs then I'd be thinking about a leak down test, those white deposits could be oil. Try a hotter plug - BPR5ES
Author:  Syd [ Tue May 10, 2022 6:58 pm ]
Post subject:  Re: Spark Plug - 96 Rover Mini Cooper 35 (Japanese Market Mo
Thanks for the info. I'll try a new set of BPR6ES with a gap of 35 thou which is .889mm and see how she goes and I'll also try running on 98 unleaded as well, cheers
Author:  Harley [ Fri May 13, 2022 10:34 am ]
Post subject:  Re: Spark Plug - 96 Rover Mini Cooper 35 (Japanese Market Mo
Check your other plugs. It's not that uncommon for 2 cylinders to run leaner than the other two on an injected mini - particularly on early models and on later cars if the inlet manifold was replaced with an earlier design one, or incorrectly 'performance modified'.
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