[jodda83]

bmw 750 2011 n63 engine / new to me just bought it with engine gremlins


Hi, i been having issues to start the car. Bimmer takes like 3-5 seconds to start, and when it starts the engine shakes and shuts off, sometimes not always.

1.- i checked the codes and all cylinders on bank 2 had misfires. 305-306-307-308, p0300, p0018, (p13b7 / 131101)

2.- went and replace all spark plugs on bank 2, and swap the coils to bank 1.


3.- checked the codes again and have this error pop up / the rest cleared up.

p0018.

p13b7 / 131101

p0306


4.- then proceed to inspect both camshaft sensors on bank 2 and swapped them to bank 1.

5.- checked the codes again, reset codes, and no luck, p0018 went on again,

6. proceed to check crankshaft sensor, to my surprise it was covered in oil and sort of grease, turns out the oil mixed with water from a water leak on the back of the engine from a plastic pan.

7.- clean sensor and reset codes, p0018 was gone for like 3 start cycles, even tho, engine struggles to start. i keep the engine running for 5 mins each cycle. runs better now but shaky.

a) at this point engine doesn't shut off as it did before, even gas pedal works better, before i press gas and car shut off, now it revs.

b) i think crankshaft sensor is bad cause it was so damped in oil, even had to clean up the connector.

but somehow it helped for a moment.

c) this are pending codes, that havent been confirmed by ecu once i cleared them. ( 3 cycles ago )

p0300

p0307

8.- my next step is:

a) to inspect and replace the vanos solenoids, change the oil cause it smells old, i miss a dipstick in here. computer says its due 400 miles

b) pcv valve, looks fine i will remove it just to inspect it, any pointers what i should look for in here.?

Question
guys need help!

1.- what else should i been checking?

2.- should i go straight forward with the timing chain replacement, or try the solenoid approach.?



thanks for reading this and taking your time to help a fellow n63 gremlin killer. lol