bottle of baby powder makes an amazingly good leak detector ..
like driving in heavy dust ..
liquid trails stand out glaringly.

On 9/8/2015 8:32 AM, William Monk wrote:
> Get a coolant UV die kit from the auto parts store. Take the guess work out
> of it.
>
> Bill
> On Sep 8, 2015 2:15 PM, "Stuart MacMillan" <stuartmacm@gmail.com> wrote:
>
>> Twice when I've had this problem it's been the rear heater core.  They can
>> weep enough to smell, but not see until they blow.  You need to slide out
>> the core. Just remove the screws holding the fan assembly to the floor and
>> raise it up a bit to get the clearance you need to slide the core out for
>> inspection.  No need to disconnect anything except maybe the wiring plug.
>>
>> Stuart
>>
>> -----Original Message-----
>> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
>> Roy Nicholl
>> Sent: Tuesday, September 08, 2015 9:59 AM
>> To: vanagon@GERRY.VANAGON.COM
>> Subject: Faint coolant smell
>>
>> All,
>>
>> A couple of weeks ago, I replaced the water pump in the Hyena ('88 Westy
>> WBX).  The past few days, I've thought I smelled a faint trace of coolant
>> in
>> the van itself.  I checked the hoses, the radiator, the front and rear
>> heaters (best I could using a camera probe and mirrors without removing all
>> the plastic) and have found no leaks.    I checked the bleeder on the
>> radiator, no leak.   I have seen no noticeable drop in coolant level in the
>> reservoir.
>>
>> Any ideas on where I should explore next?
>>
>> I have also noted that my temperature gauge is now running a little lower
>> (from top half to bottom half of LED ... about a needles width).   I plan
>> to
>> open both heater cores wide (they are partially shutdown at the moment),
>> park with the nose in the air, run it for a few moments, then open then
>> bleed the system again just to ensure I do not have an air bubble.
>>
>> Roy
>>