[DMCForum] Re: Coolant change help

["content22207" <brobertson@xxxxxxxxxxxx>]

Don't sweat those plugs. Since you're flushing the block anyway,
antifreeze and loose particulates will come out the big return ports
no problem. Are no traditional coolant passages inside a PRV to worry
about clogging up. 

Gravity will of course drain everything else (take one one or both
lines loose under the car. When my radiator was stopped up with
Cosmoline that's where we flushed it backwards and out the driver's side).

A super quick way to bleed the system is to fill it with the
thermostat out. Or you can let the engine run and bleed itself through
the hose attached to your thromostat housing (that's the "self
bleeder" you hear so much about).

Bill Robertson
#5939

>--- In DMCForum@xxxxxxxxxxxxxxx, "Mike Walsh" <yahoo@xxxx> wrote:
> I want to change my coolant and was having problems trying to unscrew 
> the engine plugs. I am also leery of taking off the rad hoses (done 
> it before) because the connectors are plastic and there is very 
> little play in the hoses to get them free.
> 
> I have a bleeder bypass installed at the water pump bleeder valve, 
> which T's into the small hose going to the coolant bottle. I was 
> thinking of disconnecting this hose at the coolant bottle and 
> extending the hose to the outside of the engine compartment. When the 
> engine is started and the thermostat opens the old coolant should run 
> out that hose. While this is happening I was going to keep adding de-
> ionized water to the coolant bottle until the runoff from the hose 
> was clear. Then add antifreeze and test the concentration to make 
> sure it has the right proportions.
> 
> I know this will take some time, but after trying other methods 
> before, it would be a lot quicker and cleaner than spending part of 
> the afternoon playing with rad hoses and trying to get engine plugs 
> out.
> 
> Does this method make any sense and will it work or totally screw 
> things up (yes I plan on watching everything carefully including the 
> temp gauge)
> 
> Mike
> #17084

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