I have a corsa C 2003 Okay so I've had a reconditioned engine put in my car it's only a 3 cylinder 12V. Now I have always noticed a ticking noise coming from the drivers side of then engine (with the old engine and this newer one) however as time has gone by the tapping noise seems to be getting louder the more I press the accelerator however when I'm not pressing the accelerator it stops. Also on the oil cap there is quite alot of creamy coloured gunk which is also in the dipstick shaft. Is this really bad? I've been told maybe be tappets need replacing? I've had a new timing chains and head gasket put it. PLEAS HELP!