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      02-23-2011, 03:29 AM   #745
BMW Technician
JonnySi's Avatar

Drives: BMW
Join Date: Jun 2010
Location: England

iTrader: (0)

Well, i've had 1 4cyl which kicked at motorway speeds frequently. It had numerous coils, plugs etc but was never rectified. It never misfired fully, or had an eml light. After doing a compression test we found cyl3 slightly low. This cyl was very slightly scored and therefore a replacement block, pistons were fitted. Although this has cured that problem, it is only a matter of time before another misfire will occur due to how the N43 and N53 engines are. Please bear in mind the large number of these sold, and to have only 1 car this bad is not bad going. Look at Si's, mine has done 33k on 3 engines, and i am not alone!