How do you replace head gasket in a Mitsubishi L300?

Answer 1

buy a workshop manual, preferably from a dealer, and if you have the required tools and can follow the manual go for it. Remember that once you remove the cylinder head, it will need to be tested for cracks and corrosion, corrosion usually develops around the water gallerys and this is what causes the head gasket to leak, the corrosion is caused by 'old coolant,' inferior coolant.' some pre-mixed coolants. when topping up water in radiator or recovery bottle the same brand and type of coolant must be used, mixing different brands can cause corrosion as well as 'stray current, a stray current test must be done at regular intervals to prevent blowing head gakets. Use or borrow a refractor meter to test glycol level in water, 30% is acceptable for L300. When job done, DO NOT USE ANY COOLANT FOR THE FIRST 800 K/M, So as to allow the new head gasket to seal propery, also do valves while head dismantled to check for craks or corrosion and attach a braided copper strap between engine and body, this will help diminish stray current, THE MAIN KILLER of head gaskets on this model