ReneR

Hello, i got problem with my BMW E60 550i. If i accelrate with half pedal then Rev's are going up till 4k and then start chugging. If i accelerate full pedal, it will start speeding till rev's reach 4k and then full on chugging. I only have 2 codes 29E8 and 29E7, recently changed spark plugs, ignition coils, MAP sensor, MAF sensor, knock sensors, throttle body.

donpb

Describe "chugging". What reader or software are you using to read the DTC codes?

ReneR

Like if it hits 4k rpm, then there isnt any power just revvs slowly going up and no power. But till 4k it has power, when around 4k hits its just fully slows. I have checked with bimmerlink.

seanjordan20

You need to check your crankcase ventilation system. Time for some much needed maintenance

ReneR

Do u mean that triple pipe on front and 2 valves, 1 on each side?

ReneR

Got new valves and that pipe, still nothing