Date: Fri, 9 Sep 2005 08:47:58 -0700
Reply-To: gary hradek <hradek@YAHOO.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: gary hradek <hradek@YAHOO.COM>
Subject: How to tell a radiator is bad
Content-Type: text/plain; charset=iso-8859-1
Ken has a good idea about testing the rediator but I
think he is too eager to replace it?
A good citric acid flush will either fix the problem
or cause leaks if the radiator is too far gone.
Garden grade citirc acid about 10-15% proceed and
follow with hot water flushes. Radiator only not the
motor. gary
Date: Fri, 9 Sep 2005 04:33:24 -0400
From: Ken Wilford <kenwilfy@COMCAST.NET>
Subject: How to tell a radiator is bad
I found a surefire way to find out if a radiator is
bad. Get either an
infrared heat gun or some type of thermostat for
measuring the heat of
the coolant hoses. Now, when the van is warmed up
measure the
temperature of the hose going to the radiator and the
hose coming back
from the radiator. The one coming back should be
about 10 degrees F
cooler (at least). If the temperatures are the same
or similar then
the
radiator is bad (plugged) and needs to be replaced.
Last van I checked this way the radiator looked like
it was full of mud
and it weighed 10 lbs more than the new one (both
aluminum).
Hope this helps,
Ken Wilford
John 3:16
www.vanagain.com
John Smith wrote:
> Hi Folks,
>
> By request, here=92s an update on the =93overheating
issues=94 I
> reported y=
> esterday. To start the investigation, I warmed up
the engine and
> double-ch=
> ecked that the coolant system was bled correctly by
slowly unscrewing
> the r=
> adiator bleeder nut. No hissing air, just a bit of
coolant that
> dribbled o=
> ut. Next, while the engine was warm, I opened up
the front and rear
> heater=
> valves and turned the fans up to high. The Temp
went from about 1/2
> to al=
> most 1/4. Then, I checked the oil filler cap for
foam=85 nothing
> there. I=
> would also like to do a dye test, but ignorant ol=92
me don=92t know
> nothi=
> ng about that, and I couldn=92t find it in the
archives=85 can
someone
> tell=
> me what this is exactly and where you get the
materials to do such a
> thing=
> ?
>
> By the way, there was no coolant bubbling out of the
overflow cap in
> the ti=
> me I was doing the testing. So far, I'm hoping
these tests lead to
> the con=
> clusion that the thermostat and/or radiator need
replacing. =20
>
> Thanks so much for your help and suggestions.
>
> Best,
>
> John
> 91 Westy
__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com
| 
