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<x-charset iso-8859-1>Ill second what jim is saying, its why I did the berg test to make sure the Oil I saw wasnt worn guides... if it were the heads would be off by now. keith ----- Original Message ----- From: Jim Adney <jadney@vwtype3.org> To: <type3@vwtype3.org> Sent: Wednesday, October 31, 2001 9:12 PM Subject: Re: SV: [T3] White exhaust? Oil consumption > On 31 Oct 2001, at 9:56, Sandin, Karl-Olov wrote: > > > Blue smokepuffs during deceleration by closing the throttle, I think > > indicates worn valve guides. > > The intake vacuum raises high while decelerating and the oil gets sucked in > > through the valve guides. > > Am I right here? > > If so, Keith is right - thats no kritical problem (only unpleasant for the > > cars behind you... ;-) ) > > An engine with this symptoms might still have a long lifetime left. > > I think worn guides are worth worrying about. This means that the > valves don't hit squarely on the seats, which produces a bending > torque on the heads, and also means that they take slightly more > time to seat, leaving less time to cool against the head. > > I'd be concerned that such a valve might fail in a way that was > catastrophic to the engine. > > - > ******************************* > Jim Adney, jadney@vwtype3.org > Madison, Wisconsin, USA > ******************************* > > ------------------------------------------------------------------- > Search old messages on the Web! Visit http://www.vwtype3.org/list/ > > </x-charset>