(chomp)... >>Expansion tank was full. > >The expansion tank is behind the license plate, and should have some coolant >in it always. Main tank, under the deck lid, was full? Try revving it up >by hand and watch the main tank. If you see the level suck way down you >have a big air bubble up front in the rad/heater core. Gets collapsed when >the pump is revved up and generates some pressure. If the level gets low >enough it sucks air, doesn't circulate coolant and does the Chernobyl >bake-off pronto. Another easy check is to turn on front heat full and fan >on 2. If the defroster air is way cooler than floor air you have a bubble. >Bleed the system like Bentley says. Then monitor coolant levels carefully >for a couple of weeks. If it air-bubbles again fast, start saving your >money up. :( Tim Smith finally got around to looking closer (post baby birthing excitement delayed things). you're right, the expansion tank was empty and the main tank was full. the main tank sucks down about an inch when i rev it. expansion tank levels have held good for the last week/200 miles. will do the bleeding exercise. but have to replace the rear bleeder/hose coupling -- the bleeder portion melted down during the December engine fire. Question: i've got a Stant radiator pressure test set. How/where would one hook this up on a waterboxer? Looks like Bentley shows one in use on the (rear) main tank, but, that tank's a threaded fitting and the stant setup only has the classic radiator notched fitting. Is there an stant/vw threaded adaptor out there, should i being doing this up front on the radiator, not at all, or...?
mondo gracias, dwight "pray for surf. it's good for the soul."
|
Please note - During the past 17 years of operation, several gigabytes of
Vanagon mail messages have been archived. Searching the entire collection
will take up to five minutes to complete. Please be patient!
Return to the archives @ gerry.vanagon.com
The vanagon mailing list archives are copyright (c) 1994-2011, and may not be reproduced without the express written permission of the list administrators. Posting messages to this mailing list grants a license to the mailing list administrators to reproduce the message in a compilation, either printed or electronic. All compilations will be not-for-profit, with any excess proceeds going to the Vanagon mailing list.
Any profits from list compilations go exclusively towards the management and operation of the Vanagon mailing list and vanagon mailing list web site.