GPZList Digest, Vol 137, Issue 2

[Ped]

Hello Jeff,

Thanks a bunch for a very valuable input! I never did pay much attention 
to the coolant, other than to check the coolant level, because it always 
appeared to have the right colour and didn't seem to be clogged with 
deposits. I have changed it a few times to ensure that it wouldn't 
freeze in the winter, but I've never actually flushed the system with 
citric acid flush. This action is now on the maintenance list and I have 
looked around to see what flush products are available here. Thanks 
again! :)

140.000 miles - wow!

Ped

------ Original Meddelelse ------
Fra: "Jeff Walker" <walkerjl at charter.net>
Til: "ped" <gpz1100abs at gmail.com>
Sendt: 16-01-2019 00:54:47
Emne: Re: GPZList Digest, Vol 137, Issue 2

>    RE: Running hot and electric fan kicking on quickly and more often and
>    running longer. I suspect that your radiator is starting to foul the
>    surfaces inside. Corrosion products build up and contaminants and
>    dissolved solids start to plate out, all of which insulates more and
>    more and impedes heat transfer out. You could try doing a citric acid
>    flush to see if it improves, and that is part of my normal annual
>    maintenance routine now. When it comes to radiator fouling, it only
>    ever gets worse over time. Good quality coolants designed for aluminum
>    with a higher initial concentration of corrosion inhibitors added helps
>    too. But it's generally a time dependent condition, not milage
>    dependent.
>    The next thing to check is the coolant pump. Just as the radiator gets
>    fouled, those dissolved corrosion products and contaminants errode the
>    pump impellor over time...less discharge pressure and lower flowrate
>    results. Lower mass flow rate of coolant = lower heat transfer rate out
>    of the radiator.
>    I'm sitting at nearly 140,000 miles on my 1996 now. The largest
>    maintenance headache I've had the last couple of years is bad gas
>    gunking up the pilot jets, and the absolute pain of getting the carb
>    bank in and out with slightly hardened and worn out carb boots. Other
>    than that, it's just been tires, oil, coolant flushes, chain and
>    sprockets, brakes, valve clearances, steering head bearings and wheel
>    bearings. I did have to rebuild the rear brake master once when it
>    started sticking and the fuel petcock...but that's it. Over 140K
>    trouble free miles.
>    Jeff in WA
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