ok so i have a em-1 that is boosted currently i am only runnin 6psi and whenever i race some one or drive it hard it always seem to leak coolant from the overflow resevoir tank and i cant find out why it seems to do this i have bleaded the radiator and still no difference so if u can please help me i woald appreciate it much also it is the stock radiator

 

You may have a bad radiator cap or head gasket.

 

i doubt it is the radiator cap it looks fine but the leak is from the resvoir tank

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ohmygodvtec &raquo;</TD></TR><TR><TD CLASS="quote">i doubt it is the radiator cap it looks fine but the leak is from the resvoir tank</TD></TR></TABLE>

If the radiator cap fails to maintain proper pressure, then coolant will overflow into the reservoir when the engine is hot.

 

what kind of radiator cap do u think i should get a regular oem or aftermarket