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Date:         Sat, 20 May 2006 11:40:22 -0700
Reply-To:     Zeitgeist <gruengeist@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Zeitgeist <gruengeist@GMAIL.COM>
Subject:      Re: Engine bearing rattle at warm restart
In-Reply-To:  <20060520172104.63129.qmail@web54708.mail.yahoo.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

What you might be hearing is some lifter noise, though you should probably hear it when the engine's cold as well. I don't believe mains rattle when they're worn, rather they make a deeper pounding sound upon acceleration. It would be interesting to determine the crank thrust play (fore and aft), which is typically a determinant of overall main bearing condition. Can't remember if you can easily check this on T-4 engines, or not. Rod bearings typically emit a higher pitched rattle upon deceleration, and I don't quite remember how wrist pins leave their telltale marks. I'd just try some red cap Mobil 1 15W50 (I think that's their weight), to see if that helps quiet down the lifters.

I haven't wrenched on VWs in over 15 years, so that's all my fleeting memory can conjure up for now. Good luck.

On 5/20/06, neil <goofymuso@yahoo.ca> wrote: > Hi all. > > An engine bearing noise question. (yes did search > archives for this one :) I'll try to be brief ;) > > Warm restart; sometimes bearing rattle (main?) until > oil light goes out. Oil light flickers 1 or 2 seconds > but goes out/stays off. I let it idle til sound goes > away before revving/putting load on engine.

Casey Olympia, WA Biodiesel: "I drive in a persistent vegetative state" '87 300TD intercooler #22 (214k) '84 300D (212k) Gashuffer: '89 Vanagon Wolfsburg Edition (187K)


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