Quote:
Originally Posted by bornleo369
@Sophisticated Redneck
Thank you so much for your valuable advice. I will tell the technician to check for faulty camshaft position sensor.
H However, current miles on car 120,455 and things which have been replaced in the car at 110,000 (2 years ago) are as followed:
Replaced all crankcase & vent tube and hoses.
Fuel injection cleaning and fuel optimizer services performed.
Replaced all leaking turbo coolant lines and hoses.
Put in brand new battery.
Fuel pump replaced as part of BMW recall.
Replaced all 8 fuel injectors and all 8 sparkplugs.
I paid $4595 for all this in BMW dealership on 6th Dec 2017.
After putting so much money and driving only 10,000 miles since then I am facing this many issues.
Technician is looking at it and says he will try to diagnose. Cost I have spent since last week since it is in the shop $700.
They (BMW dealership) hasn't listed COILS being replaced when the spark plugs were changed.
Question to you: Would they change coils too when changing the spark plugs? because in invoice i do not see changing coils just spark plugs.
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As others have mentioned, if it isn't on the repair sheet they didn't do it. Coils are one of the easiest things to do they should be done at 80K (absolutely by 100K) on the N63. It frys its coils early due to the extreme temps the engine encounters. This is something you can save alot of money on if you do it yourself, if your not into that then you can still save alot of money going to a good independent. Either go with OEM from the Dealer if you have the cash to burn or go with aftermarket from Eldor or Bremi as they are both excellent (Eldor is the best IMHO). Avoid aftermarket Bosch, to many counterfeits. Delphi are decent.
The big question is how F'ed is your engine? If you really have metal fragments, you looking at a rebuild/new engine. Even if the fragments are just from the chain due to busted guides, chances are they are also in your bearing journals if they are showing up in your vanos screens doing major damage or its a spun bearing, either way you are looking a complete engine rebuild or replacement sooner or later
1 - before investing any more money, have your oil drained again and have the techs thoroughly go analyze for any metal fragments.
2 - If none found - send a sample in to have Analyzed by professional lab like blackstone (will take a week or so for turn around, In mean time have the coils replaced on the misfire Cylinders (if you plan on keeping the X5 no matter what, then just replace them all.) and replace the cam sensors. Run just enough to test.
3 - If coils and cam sensors fix it great! Don't start driving yet though until results from lab are back. If coils and sensors dont do anything, wait for results...If clean your call on if you want to chase the bad parts or so say screw it and get new engine, if results say its metal in oil, then rebuild or replacement engine is only way to go.