Blown Valve Cover Gasket Symptoms. Engine gauge showing maximum temperature after a few minutes. Discoloration may not be common but its a surefire sign that this component has failed and things are mixing where they shouldnt be.
Oil-contaminated coolant forms a mayonnaise-like film which you might find on the radiator cap or in the overflow reservoir. One of the more subtle signs of a blown head gasket is discolored fluid. If the valve cover seems dirty or surrounded by grime this means there is a leak in the valve cover gasket.
Over time it becomes brittle or cracks due to heat and old age.
However the gasket is delicate and more prone to damage than the cover itself. A burning oil smell that is easily recognizable. Discolored fluids are more subtle signs of a blown head gasket. If you recognize any of these warning signs contact a mechanic as soon as possible so they can replace the valve cover gasket if needed.
