hello guys.i have changed the engine on my car,and after this the new engine overheats(when i puted the new engine i took all the parts off and cleaned and substituted all the things).So,it was overheating and overheating,and the ventilator didn't switch on,i tried it directly with a battery,and it worked,so the problem is not a ventilator.Today i went to drive on the highroad about 30-40 minutes,and after i got down from highroad the gauge sudently started to go up,when i accelerate a bit,the gauge goes down for a bit,but once i go slow it goes up again....i connected the ventilator to battery directly and went do drive inside of the city,but it still overheats.I took the thermostat off,and now driving without it,but the problem still persists....i also took the old thermo-sensor out,and put the 1 i had from my broken engine,and it still overheats..i feel up the radiator with liquid(antifreeze),did everything again,like step by step,and the radiator and overfill tank were full,after driving for a while in the city it overheats again.It seems that there is no smoke coming out of exhaust,but yesterday when i was going with my friend to supermarket(he was behind me on the scooter),and i accelerated like to full(7,3 RPM)and so,he said there was black smoke coming out of exhaust.when the car is on idle,it throws some whater or maybe even antifreeze from exhaust.what would you advise ?could the problem be in "air inside of the cooling system" ???cause it just gets about 2,5-3 liters of antifreeze,maybe it creates the air bubbles inside the cooling system ??i have this car for 1,5 months,and i spent already 1200 €,i'm very disappointed with it now,first the engine,then some messed screw,now this overheating problem....what could it be ?
,waiting for any advice,help,insight,Thanks in advance to helpful people
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