Re: Manifold water by pass pipe

[tr6taylor@webtv.net (Sally or Dick Taylor)]

Richard---I've come across a couple of these pipes that accumulated
rust... especially near the corners. A clear or new pipe has an ID
larger than what you describe. Try rodding it out or replace it if it
then looks too thin. It's good to open the heater valve once a month or
so to get fresh coolant circulating for a minute thru this otherwise
blocked-off area of the system.

Dick