vanos solenoids

[ajk671]

2008 e90 318i msport, so I decided to change my vanos solenoids for new ones bought from amazon , they have slightly different ends but they fit same as old ones , when i turn on the ignition i get a red oil light apear also with half engine management like 2 codes pending P0015, when the car is driven there is an awfull louding clicking noise from the engine wich doesnt sound good , replaced old solenoids and the code and light go away , but car still running rough and hesitates alotbak low rpm , also car cranks for ages before starting some times , sometimes 15mins or so till it starts on a morning could this be vanos related or even bad plugs.

[helix402]

Why did you change the solenoids?

[ajk671]

car was shaking and idoling rough on stand still , engine light appeared every day , swapped solenoids over and this went away although now car drives ok , sometimes takes ages to start when cold , hesitates at low revs , doesnt seem much power through the gears, although no codes. just thought id have a go and renew them both. i thought the start issue might be fuel filter as the longer the car is stood the harder it is to start but told by garage filter is a lifetime part inside the tank , maybe it could be bad plugs ? fuel pump ? the cars on 120k

[helix402]

There are lots of common faults on these engines. A common one causing long cranking times is a faulty low pressure sensor on the fuel rail, failing injectors can also cause similar problems. I'd recommend getting a BMW specialist to have a look.

[ajk671]

thanks , are new injectors a big job ? i wonder if i should try injector cleaner in the fuel first ? want to try and avoid bmw , and the last german car specialist wanted to charge me 700 for a new timing chain, when swapped solenoids sorted the problem to a certain extent