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