chris270181

hi guys, as above my car is blowing out blue smoke underload (oil) any ideas what the most likely cause could be?
The car has been off the road for 9 months and has just undergone a new engine from a 36 k car it has been out on a few short runs and was fine then all off a sudden on the mot fast idle test out comes smoke, then it clears then once on the road above 2.5k it starts happening again? Oh and the oil level is showing above max could this have anything to do with it?
Thanks in advance for any advice given...