Thanks, Stuart...I'm befuddled...no coolant popping out of overflow...

Heads look clean :-) I will give it a more once over when I'm off
work...maybe I'm just losing it from one of the less obvious places....

On Wed, Mar 30, 2016 at 10:38 AM, Stuart MacMillan <stuartmacm@gmail.com>
wrote:

> Internal leak would be into the crankcase, and you'd know about that!
> Blown internal head gasket ring would over-pressurize the system and
> coolant would come out of the overflow bottle.  Keep looking, the front
> heater valve above the spare or a cracked expansion tank can leak under
> pressure and you don't always see it.
>
> Since you have metal coolant tubes to the radiator, I doubt those are
> leaking like the plastic tubes do, but I'd make sure all connections are
> tight. Last, it could be the outer rubber head gaskets with a slow leak. :-(
>
> Stuart
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
> Of David
> Sent: Wednesday, March 30, 2016 7:02 AM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Coolant Loss- is it that time again?
>
> On my 85 1.9 (second set of heads...that we did 11 years ago) I'm
> suspecting internal leakage...
>
> I have had a lot of coolant loss over a long period of time...I topped up
> the bottle- thinkng that maybe when a heater control switch was switched
> out that we just didn't get all the air out of the system...
>
> I did have another external leak that I fixed- but something just doesn't
> seem right.
>
> Just finished pouring about a gallon of antifreeze into the system this
> AM- and doing some bleeding...what's next? How can I locate this internal
> leak?
> Or would there be some other not so obvious places? Rear heater is
> bypassed...maybe lost coolant from that operation and it's only showing up
> now...something aint right!
>
> The engine runs like a champ- full power - after my more recent electrical
> (I believe to have been) issues- reseating all major suspects...it runs and
> idles wonderfully....
>
> Any advice is welcome... do we have to check for exhaust in the coolant?
>
> Dave
> 85 1.9 GL MT
>
>