Couldn't make it...
My grand adventure to Alaska has been scrubbed for this year. My plan to take a used TV with only 8 months shake-down time on it was too bold I guess. While driving through Montana, I hit 95-100 d...
Forum Discussion
GordonThree wrote:
From what I can tell, air is getting into the cooling loop somehow, and forcing water out of the radiator by over flowing the overflow tank. When I'd stop to top off the coolant, there'd always be a out-rush of air when I open the rad cap (after cooling down for at least an hour.) There is nothing unusual in the exhaust, it is clear and mostly odor free, all the fluids look the way they are supposed to.
This upcoming spring, I'll be returning a car I lease for business, and will likely buy an over compensating pickup truck.
Very likely, you have a bad radiator cap and a simple fix. When the system is pressurized, the cap does not have enough spring pressure to keep the seal. Coolant bypasses the cap and flows into the overflow tank and beyond. As air enters the system, it still retains some pressure when the system is off. That's why you hear the whoosh. I'd certainly try a new radiator cap before throwing in the towel.
