Date:         Thu, 27 Mar 2014 06:55:46 -0700
Reply-To:     Anthony Egeln <regnsuzanne@YAHOO.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Anthony Egeln <regnsuzanne@YAHOO.COM>
Subject:      Re: Thunk! When Starting
Comments: To: Steven Shelton <shelton4@GMAIL.COM>
In-Reply-To:  <CACK29ckg3qkiUA6Vrvq6mFnvA2qYk=UwWO_Buj8KLd4o9yvr2A@mail.gmail.com>
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I had the same problem for some time, and it turned out to be the exhaust banging against the body or bumper, can't remember which one.  But only when starting the van.


Simple problem and caused no damage to anything.

Anthony


________________________________
 From: Steven Shelton <shelton4@GMAIL.COM>
To: vanagon@GERRY.VANAGON.COM 
Sent: Thursday, March 27, 2014 8:01 AM
Subject: Thunk! When Starting
 

Lately, about 1/3 to 1/2 the time i start my 1985 1.9L, I hear and feel a
loud THUNK! from the rear.  It runs OK after the thunk.  I thought it was
most likely motor mount(s), but yesterday i was looking under the van and
saw a wet spot from coolant dripping from somewhere on the driver's side of
the engine.  Last night I came up with the unpleasant theory that the  two
could be related; the coolant could be leaking into the cylinder as well as
outside, and the thunk could be momentary hydro-lock.  Is this a
possibility?  It's a VW rebuilt engine wit 54,000 miles on it.