Maybe I'm missing something here, like Mike I'm slowly learning about the
function of my coolant system and as a result I'm not so sure the blow suck
test is accurate -

Why do I say such a blasphemous thing?

Well I went cap in hand (no pun) to the Bug Shop last Friday with the
intention of picking up a new cap as the one I had (brand new) failed the
blow suck test...air would pass both ways - one way restricted the air a bit
more than the other - I can't remember whether it was air toward or away
from the cap but regardless air got through each way.

Anyway Ed checked the cap with a pressure tester and he pronounced it good
to go as it held pressure.

So I'm a bit perplexed - as anyone knows...Ed is rightfully qualified.

BT

On Thu, May 21, 2009 at 4:33 AM, Mike Collum <collum@myfairpoint.net> wrote:

> Robert Fisher wrote:
>
>> what's up with the overflow filling up on
>> its own? Is the cap bad, or will it just do that from having the nose up,
>> or
>> did I not let it cool enough before I put more coolant in the overflow?
>>
>
>
> FWIW, I had a cap that passed the suck/blow test but when I parked nose
> up on a steep hill and filled the system from the front (small hose into
> the bottom of a plastic jug) there was still a trickle that went to the
> overflow tank.  After the system was bled and I backed off the hill, the
> cooling system performed normally.
>
> As to the radiator "Bolt" ... you can cut a slot in the lower threads
> using a Dremel or some such.  That way it'll work like the OEM brass
> bolt with the slot.
>
> Mike
>