i have a 2000 lightning that spits coolant out of the coolant cap on the left side at high rmp, it also has a slight miss when driving at a constant speed.i bought the truck used it has mods but dont know what size pulley(its blue).any tips would help. thanks,henry

 

is the coolant over filled?

 

i have it at the lowest level because i though the same thing,it still does it.i dont know whats up

 

well it could have a leaking head gasket, and as rpms rise, pressure increases pushing air through the head gasket, blowing it out of the cap, even with it low, and that would explain the miss...

 

thanks for your help