Vechile overheating

[patsublett]

I got a Grandson that had to leave his 97 Mercury Grand Marke beside the road yestarday. It got hot and he tried to fill the radiator through the overflow canister. He said that he couldn't find the radiator cap. I told him that I would go check it today and have it towed if I could not fix it. I have an old Stant pressure tester. I thought I would pressure test it if the tester still works. I haven't used it in 30 Yrs. Anybody know where the radiator cap is or if venting is necessary and where the vent port is if it has one.

 

[lucas boy]

I think its on the radiator

 

[Lamar Fudd]

As Lucas Boy said, and take that cap off to refill the radiator first, THEN the overflow tank. Rad cap should be on the passenger side of radiator.