Type-44: 200q cooling system flush/fill tips.

[Kneale Brownson]

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At 05:23 PM 12/19/2001 -0500, Huw Powell wrote:


> > Just wanted to ask those out there for some cooling system maintenance
> > tips for the 200q, being my 1st time flushing an I5.  Although I have a
> > Bentley, usually its rather lacking in detail.
> >
> > I'd like to find out where the engine block's drain plug(s) are located,
> > as well as the radiator's drain petcock, if any.
>
>That's easy... there aren't any.  As Marc pointed out, drain the
>radiator by pulling a hose, and the t-stat housing is as low as you are
>going to get on the block.
>
> > I plan to install a Prestone Flush Tee, use requisite garden hose to
> > flush
>
>seems like more trouble than its worth, considering a new tstat is cheap
>and should be installed with the coolant change.  In fact, you pretty
>much have to pull the tstat to flush the block, I think.
>
>I believe you want to make very sure the after run pump is "wet" before
>it ever runs, so do your warm up and top off things, maybe drive a bit,
>with it disconnected, until your sure it will not be running "dry."
>
>Wish I could answer that other question Marc raised, which is how to
>make sure the heater valve is wide open.  it might be easier just to
>pull both hoses off it to get a sure flush of the heater core.  Then
>install a new metal heater valve.

You need to pull a vacuum on the Type 44 heater valve to keep it open, I
believe.  A Mighty Mite or whatever vacuum pump probably would do.
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