Date: Tue, 12 Apr 2005 12:43:48 -0500
Reply-To: Stan Wilder <wilden1-1@SBCGLOBAL.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Stan Wilder <wilden1-1@SBCGLOBAL.NET>
Subject: Re: ( four bent valves) fixed
Content-Type: text/plain; charset="iso-8859-1"
Old vehicles can have a wild history.
I always run Marvel Mystery Oil in the crankcase after I've done an initial
engine / crankcase purge with gunk engine cleaner.
Many times the crank cases are full of the latest Automotive Chemical
running on infomercials. And things like DuraLube and a few others that make
wild claims are good only to pump up compression and oil pressure so you can
dump the car on some poor unsuspecting buyer.
On some old VW Vanagons I've added engine crankcase cleaner, run the engine
and still had sludge that went glug to come out of the drain. There have
been engines that required the cleaning process several times before the oil
cleaned up. You never know which engine is going to be massive grungy inside
because often new or rebuilt heads have been installed and you can't judge
the crankcase interior condition.
Some engines can be brought back to life with the engine cleaning and some
are too far gone.
You can pretty well guess that an engine with a filthy exterior was equally
abused or neglected in the area of oil changes and preventive maintenance.
One of my Westy had been run with something like duralube and when I pulled
the engine down the ring lands were packed with something that clogged the
lands, drain holes and was near impossible to remove.
Stan Wilder
Engine Ceramics
214-352-4931
www.engineceramics.com
----- Original Message -----
From: "jimt" <camper@TACTICAL-BUS.INFO>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Tuesday, April 12, 2005 11:37 AM
Subject: Re: ( four bent valves) fixed
On 4/11/05 23:10, "Jeff Ensing" <Kjmmensing@AOL.COM> wrote:
> Thankyou Bob Donalds
> for the correct diagnosis that the valves were indeed siezed in the
guides
> because of fuel contamination!
> I removed the heads and with carb clean and a torch (not at the same
> time)they are now spinning freely again.
> The intake runners were literally filled a .5" with what looked like
> roofing tar!
I have never seen the stuff jam the valves but what you are describing
sounds like a vehicle that had been sitting for a very very long time and
had developed a shellac like material in the fuel system. I have seen it
completely fill up injectors and clog up fuel lines worse than any
cholesterol problems.
This is one reason when I get a vehicle that I know has been sitting for a
couple years I will pour about 5 gallons into the tank and let it sit for a
day or two and then using just the pump, run it out into a container again
to inspect. I also remove the fuel line from the pump to the engine to
check it out (if metal) and just replace it if rubber. Some things an "old
guy" taught me when I was a kid. (of course werent too many electric pumps
around in those days but same principals.)
........................................
jimt
Planned insanity is best.
Remember that sanity is optional.
http://www.tactical-bus.info (tech info)
http://www.westydriver.com
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