[DML] Coolant system pressure check and vacuum routing.
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[DML] Coolant system pressure check and vacuum routing.

I've just gotten my new water pump in, all new hoses etc. and am starting to
check the system for leaks.  I'm using a pressure tester borrowed from auto
zone and clearly have a few leaks to find - am peaking out at 4 psi.

Is there any difference between checking the system dry and filling it with
coolant before pressure testing?  I'd like to avoid filling until I'm
reasonably sure the system is tight.

Also - I've got a vacuum connection that's staring me in the face.  The
large hose coming from the charcoal canister, forward toward the resister
pack, across the firewall to the passenger side and continuing on.  Right
near the heater control valve there is a tee in this line with nothing
coming out of the bottom of the T.  I didn't see any good reference on
Hervey's site, and I don't for the life of me remember what tied in there.

It annoys me greatly that half of the car's vacuum system doesn't make it
onto the diagrams I've found.  Nice that we have all the engine controls
documented, but a leak is a leak - is there a better reference that shows
ALL of the vacuum in the car?


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