Tim,

You didn't mention whether the engine was hot or cold.  When cold the
expansion tank should be full and there should be coolant up to the
minimum line on the expansion tank. If not, add some up to the low level
or minimum mark. As the engine heats, coolant will flow from the
expansion tank through the cap to the overflow tank, making the level
rise. As the engine cools, the coolant will be drawn back into the
expansion tank. If the overflow tank is not kept supplied to the minimum
mark, in time the expansion tank will begin to have air drawn in and the
coolant level will fall in that exapnsion tank, denying the engine
necessary coolant. It's crucial to keep that overflow tank up to minimum
when cold in order to have the correct action in the cooling system.

Regards,

John Rodgers
88 GZL driver

Tim Kasher wrote:

>My coolant tank is completely full when i take the cap off even a litte
>comes out (good I guess no coolant leaks) but my overflow tank is bone
>dry...i dont think any coolant is flowing to it...i checked the hose at top
>and it is find...the one on the bottom is tough to get off so i left it
>alone and it seems fine too?
>
>Any thoughts.....thanks in advance
>
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