Could be piston rings or valve stem seals to be honest either might make the repair uneconomical.
Bmw e46 n42 piston rings.
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High quality piston ring kit for bmw e46 and other models.
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How to change piston rings and bearinga of n42 318i bmw engine.
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How do i replace piston rings on bmw e46 n42 engine bmw cars trucks question.
Badly worn piston rings is the cause of oil consumption in our bmw with m54.
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.
Engine conrod connecting rod φ20mm for 2 0 l bmw 120i 318i e90 e91 n42 n43 n46.
Installing back cleaned piston with rings back to the honed m52tu block using ring compressor.
Posted by dada albert daku on oct 26 2016.
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Piston rings set 4x for bmw e46 e90 e91 e92 e81 e87 n46b20 n45 n42 n40 318i 320i.
In the short term you could change the spark plugs maybe with a cheap 10 15 set if it has.
Many of you asking why my m54 is burning oil looking for solution.
I found it.