engine losing power

[JOHN MILNE]

My r56 cooper seem to have lost power
When accelerating it seem to go very rough as if it is thinking about then going
When stopped and idling seem as if it chugging
Any ideas?

[Eddie]

Eml on


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[JOHN MILNE]

No warning lights at all

[Eddie]

Could be lots of things but try leads n plugs first


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[badwolf340]

sounds like coil pack :thumbs up:

[JOHN MILNE]

anyone have an idea
car still losing power
fitted new ignition coils, spark plugs, vanos solenoid
changed oil and filters

[stoney]

Is your car an S if so it may be the BOV value sticking open

[JOHN MILNE]

its an R56 cooper

[Mon the fish]

Have you read any fault codes? That's where I'd start first

[Eddie_JCW]

MAF?

[Alex from NM]

High pressure fuel pump?

[JOHN MILNE]

anyone know what fault codes mean
2842 vanos exhaust activation
283D vanos adaptation stop
R56 cooper

[Alex from NM]

Your vanos is your valve timing system so it's probably your timing chain and tensioner