Please GURUS in autos should help me out:i have a bimmer 2002 (coja)which smokes occassionally especially after reving it much,although it shorts oil a little,but i was told the engine is still ok as it sounds perfectly and compression is standard and it does not kill plugs.if i start the car in the morning it drops water and it does not smoke but if i give it a hard drive after a while it will smoke(blue smoke)a while and then stop.for example,if am going on a journey of 120km,leavinghome it will not smoke but after 10km it will smoke slighlty till like 30-35km after which it may not smoke for the rest of the journey.i am confuse as i price the engine and was told it goes for 250,000 for tokunbo which is still on the high side for me now.also somebody offer to sell (borale)i.e with some part missing(alternator,compressor,water pump)since my own is still ok for 120,000.pls auto guru help your guy out. Diffrent Mechanics say diffent things and am lost.

you will need to run a scan on your car sir.

Thank u sir, i did run a scan but the mechanics are not getting the real issue,that is part of why am confuse,at a point in time one told me to be using it like that since the car does not give me issues except for the smoke which am not comfortable with

what was the code(s) after scanning.
for proper and correct code interpretation we will need to scan it.

please can i drive down to your office,if yes pls give me ur adress

You need to get an expert to properly scan the car and interpret the error codes.. But I'll also advice u check out the catalytic converter of the car. Check out the O2 sensor too... If bad, replace them. Goodluck

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Please GURUS in autos should help me out:i have a bimmer 2002 (coja)which smokes occassionally especially after reving it much,although it shorts oil a little,but i was told the engine is still ok as it sounds perfectly and compression is standard and it does not kill plugs.if i start the car in the morning it drops water and it does not smoke but if i give it a hard drive after a while it will smoke(blue smoke)a while and then stop.for example,if am going on a journey of 120km,leavinghome it will not smoke but after 10km it will smoke slighlty till like 30-35km after which it may not smoke for the rest of the journey.i am confuse as i price the engine and was told it goes for 250,000 for tokunbo which is still on the high side for me now.also somebody offer to sell (borale)i.e with some part missing(alternator,compressor,water pump)since my own is still ok for 120,000.pls auto guru help your guy out. Diffrent Mechanics say diffent things and am lost.

My guy, u need new valve seals.

I want to say thank you to nairalander who advised me on my first post on nairalander concerning my BMW that smokes occasionally,I actually got the engine rebuilder after a while but the problem was actually a crack on the cylinder head which makes one of the valves inactive and as such oil do escape into the combustion chamber and it comes out in form of blue smoke.but now I have another issue I need help of nairalander to advice.The problem started with me having a failed oil pump on motion,I later got another oil pump fixed and on trying to start the car we found out that the nozzle was not spraying fuel we ran a scan on the car and I was told my brain box is bad that as such I will need another ecu plus ews to get my car started.i went to buy this items and now the nozzles spray but the car is yet to start.pls can anyone advice pls.The car is 2002 n42 engine of e46.

Op dont be ignorant,scan and paste the codes on here,however for U to know if ur ECU gs dead all U need to do is remove or disconnect a component ie Canshaft positioning sensor and sed if the Ecu would store a code for it when scanned,that my friend is the best way to troubleshoot a dead ECU