Question about BMW 3 Series

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The workshop did not fit the oil regulator and engene seized. but piston show that the problem was the injector, piston 2. Why have the engene broke after the oil filter has been changed, without the regulator, no problems with the regulators before oil change ? Only drove about 50 km after oil change. Is it possible that the engene overheated and damaged the injector? Johan Botha Rustenburg South Africa

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  • Tom
    Tom May 11, 2010

    An oil change normally involves dumping the oil removing the old filter and then in some cases filling the new filter with oil to prime it before re-fitting You would then fill the engine up to the fill level on the dipstick and turn it over. There is a brief period when the oil pump is getting up to pressure when the engine may knock but that should be fairly brief. If you had a problem on the oil system there would be a warning sign come up on the display and in extreme cases you would smell hot engine Are you talking about a fuel injector on piston 2 because they are bomb proof re overheating all they do is to meter fuel into the cylinder and have no part in the engine oil circulation. Did you dip the oil after the garage had given you the car back or did you dip the oil when the car broke down. If you didnt then you are in a bad position as they can say they did fill it when they didnt and also that there was oil in the engine when it stopped even if there wasnt


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What oil regulators?? only change the oil filter and oil ,their is no regulator only a pressure relief valve but thats in the oil pump ,if the injector failed ,and allowed neat fuel into the piston then this would cause the piston to seize because it wash all the oil off the cylinder bore .then seize up time

Posted on Jul 25, 2009

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