Posted by dada albert daku on oct 26 2016.
Bmw e46 n42 piston rings.
Badly worn piston rings is the cause of oil consumption in our bmw with m54.
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Buy genuine bmw 3 series e46 n40 n42 repair kit 1x piston rings oem 11257506409 at amazon uk.
My bmw 318i 2002 e46 has done 103000 miles and otherwise drives nicely but has had oil leaks almost consistently for the past two years.
Could be piston rings or valve stem seals to be honest either might make the repair uneconomical.
High quality piston ring kit for bmw e46 and other models.
How do i replace piston rings on bmw e46 n42 engine bmw cars trucks question.
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At first it was the rocker cover gasket then it was two rings accross the front of the engine then it was the sump gasket and now its the rocker cover gasket again.
In the short term you could change the spark plugs maybe with a cheap 10 15 set if it has.