radiator cold fill resevoir?

[Strokin' 6]

Hey, I have a 91 ford ranger with a 4.0 and the Cold fill tank for the radiator is not staying full. I would fill it one and day and about 2 days later it would be empty. When I checked the radiator it has the correct amount of coolant. the truck runs fine and does not over heat, So i know its not a blown head gasket. I was thinking that there may be a crack in the tank but i cant see one visible. I do not see any leaks so I have no idea!

 

[holyford86]

might just be a loose hose to the tank or a hose that is dry rotted and weeping. they are just a push on barb connection. Perhaps replacing the hose to the tank and using a hose clamp at the bottom of the tank would help.

 

[F150hybred]

Another area to look at would be the radiator cap. If it's not sealing on the radiator properly, it will just spill over the neck of the radiator.

 

[AllanD]

A hose clamp?

On every RBV I've ever owned I've needed to
ADD a hose clamps to the oveflow hose

On my current setup I substituted a clear vinyl hose
and it's retained with lawnmower fuel line hose clamps.

Why? a consistant leak from the reservoir.

AD