il try the pipe thing soon taggy also the plugs electrode was clean use normal carbon, it was just the 1 and 4 plugs thread with slight oil so slight it can hardly be seen had to touch it and then saw on my finger also il get a compression tester of somebody , last time is was between 147 and 150 in all cylinders? and that was with no throttle and king lead was on. the head on my engine is likke new only been 500 miles i got valve stems replace , head skimmed, head shimmed for cams etc etc all work was done by engineer to head so i dont see it being head, it used to smoke before i thought it was strem seals, after i got all this done it didnt smoke for a few days on cold, then after a week or so easy driving off boost aswell it started smoking again i started noticing oil on back of car## the turbo can be ruled out as with my ct9 it had same problem and ct9 was mint no shaft play no oil with td04 still same problem. also ive been offered an engine with no smoke still in car can be seen running compression around 12 bar in all 4 for 800 it has standard internals and all ancillaries##obviously if i go see it then i will get it compression check infront of me.. but is it worth what hes asking