Rough Idle

[Jaye Cars]

Hello guys

really stuck on my f10 m5 S63TU engine bought it as a misfiring or out of time runner.

cars been to loads of garages and still hasent fixed the fault.

so cars had a new block fitted, as when i changed the oil it was clear not black ( new oil ) looks new to the rest of the car sump head ect.

i have replaced injectors coils sparks checked compression and done a leak down, everything came back working normal, getting feed back from the high pressure fual pumps demanded readings.

i have replaced all 4 vanos as we was getting Inconsistent readings, changed all the cam sensors also.

it fails the vanos calibrations ( on snap on )

no codes in both dmes i’m stuck it sounds like it’s out of time or missing high up driving its fine but anything low down car shakes like mad.

any ideas 🤣

[M5Rick]

Clean the MAF's with a can of cleaner like CRC, failing that the plastic throttle plates may have deteriorated.

[KurtsM5]

Does it have a tune? If not get someone to reflash it stock and see it the DMEs have gotten a little corrupted.

[Jaye Cars]

yeah i have done and changed the injectors and still the same thing missing

[M5_Raz]

No codes or incorrect codes in DME might indicate a problem with them. Check all connections first, some users had problems due to a loose ground wire.

[Jaye Cars]

do these cars need the injectors coded

[eflo82]

Originally Posted by Jaye Cars

do these cars need the injectors coded

yes they do

[danielgmanm6]

Originally Posted by Jaye Cars

Hello guys

really stuck on my f10 m5 S63TU engine bought it as a misfiring or out of time runner.

cars been to loads of garages and still hasent fixed the fault.

so cars had a new block fitted, as when i changed the oil it was clear not black ( new oil ) looks new to the rest of the car sump head ect.

i have replaced injectors coils sparks checked compression and done a leak down, everything came back working normal, getting feed back from the high pressure fual pumps demanded readings.

i have replaced all 4 vanos as we was getting Inconsistent readings, changed all the cam sensors also.

it fails the vanos calibrations ( on snap on )

no codes in both dmes i’m stuck it sounds like it’s out of time or missing high up driving its fine but anything low down car shakes like mad.

any ideas 🤣

2013 call for EU5 fuel injectors, many users have indicated the dealer or shops have put in the EU6 injectors.