I posted this the other day I took the thermostat out of engine it was fixed I thought when it left it was all right but it doing same thing water bubbling and boiling in expansion tank?
First you need the thermostat in to control the water flow, it needs time to cool while in the radiator, second a bubbling in the overflow can mean 2 things I its overheating or your getting air in the system which is usually a cracked head or blown head gasket
Answers & Comments
Check radiator cap for pressure retension
First you need the thermostat in to control the water flow, it needs time to cool while in the radiator, second a bubbling in the overflow can mean 2 things I its overheating or your getting air in the system which is usually a cracked head or blown head gasket