Answers: the plastic tank's purpose is collect the expanded coolant that gets olden the pressure caps rating and provides a optical level. yes sometimes they crack but near should be evidence of a leaking container on the ground..if there is room contained by the engine/radiator the coolant will be drawn from the plastic tank as the engine cools.. i suspect you hold a small leak somewhere surrounded by the engine like an intake numerous gasket,
Take the hose and fill the reserve...Wait and see if it leak... They do crack and leak. Check the radiator you must be low an antifreeze... Put some contained by with the engine running---not necessarily hot... Tank leak buy a new one. Dealer item
Do you see coolant leak out under the motor? I not, Have your system pressure tested at your local garage to locate the leak surrounded by your system. Sometimes the overflow plastic tanks will crack or bust if you occupied it with "water" (freezing during winter). Check to see if in that is oil within your coolant system (skimming oil slick within radiator) or oils sludge within overflow tank...If so, this is a sign that your intake various gaskets are leaking (or the several is pitted at the water jackets) and the engine is "burning" the coolant ... The overflow coolant is pulled hindmost into the system during operation so fill your coolant to the height recommended on the outside of the overflow tank (when cold)... Hope this help.
More Auto Questions and Answers...
This article contents is post by this website user, AutoQnA.com doesn't promise its accuracy.