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bmw 116i running poorly :(

adamhorton1991

By adamhorton1991,
in BMW 1 Series Forum

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adamhorton1991 Apprentice

adamhorton1991

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I have a bmw 1 series 116i 2012 plate with 91k on the clock ive notice lately there is a slight miss fire / jerking when driving when cold but there is no codes showing for this. also ive notice the fuel consumption is creeping up a little even when driving in eco mode it says im doing 33.5mpg but doesn't seem right to me or maybe im over thinking the mpg a little, I was using a lot of oil at one point but I changed the oil and put some in from bmw and its been alright since fingers crossed
any suggestions on what to check and were to start I have some knowledge of mechiancs but not in a great technical detail
many thanks ADAM

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Greydog Grand Master

Greydog

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Welcome Adam

Check the in-let side for any vacuum leaks a perished or split hose can give the symptoms your seeing, then check all electrical connections unplug give a good squirt of electrical contact cleaner (not WD40) clear down the codes and see where it takes you.

Dave

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