Date: Thu, 12 Jan 2006 20:33:52 -0500
Reply-To: Dennis Haynes <dhaynes@OPTONLINE.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Dennis Haynes <dhaynes@OPTONLINE.NET>
Subject: Re: found some hidden vacuum leaks
In-Reply-To: <20060109170031.51172.qmail@web60212.mail.yahoo.com>
Content-type: text/plain; charset=us-ascii
I've seen the intake manifolds rust through just above those castings
that bolt to the head. The vapor recovery system can be a problem.
Worse, the carbon canister can have the internal screen rust through
allowing some carbon to fall out and clog the vent hose on the bottom.
Air can no longer enter the fuel tank as the fuel is used. Can we say
intermittent fuel starvation? How about new fuel tank that has the
bottom caved in about 3 inches? Got one here now. Compressed air blew
the tank almost back in shape. Check that carbon canister!
Dennis
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
Of roger sisler
Sent: Monday, January 09, 2006 12:01 PM
To: vanagon@GERRY.VANAGON.COM
Subject: found some hidden vacuum leaks
Maybe your WBX just wont idle like it used to? Try checking these areas
for vacuum leaks on a nice weekend afternoon.
The intake runners---use a 13mm socket to tighten down on
the 2 bolts where the runner attach near the injectors.Each side.One
runner on my 1.9 was so loose I could wiggle it.
New injector o-rings. Avaliable at Advance Auto for $5. A total of 4
large and 4 small o-rings. Just remove the single 10mm nut that holds
the gang of 2 injectors to the runner.They pull right out then.Cut the
large 0-rings off,then slide the new on, and push the new small o-rings
on the end of each injector(You may need a small screw driver to pry out
the old small o-ring from the irunner , as it is a 50/50 chance as to
wheather it will come out with the injector). Stuff the injector ends
back in the runner and attach the 10mm bolt.EZ .You will sleep well
after this repair.
Breather tower. The 4 nuts(10mm) at the base can come loose and let
oil out, and the stiff hose from the breather to the AFM can leak at the
breather. A clamp will fix it.
The rubber, power brake vacuum line ,that attaches to the left side
of the intake air distributor may be cracked and leaking.It cracks at
the bend and can be checked by bending it more to reveal the cracks.This
attaches to a hard plastic line about 1 foot from the intake
distributor. I used 7/16 inch diameter hose,1 foot long.
The thottle assembly my come loose from where it attaches to the air
distributor. Use a large head, phillips screw driver to tighten it up.
The Rubber boot between the AFM and throttle assembly can leak in 2
areas. First , at the 45 degree bend on the bottom where you cant see
it. It cracks when it gets old.It may flex when the engine is revved up
and let air in. An intermittant type air leak. Black rubber weatherstrip
adhesive wil fix this up, and you wont see it , as it is on the bottom,
out of sight.Second,the two large hoses that attach to the upper ,front
portion of the boot can leak at the joint. I used a tar like gum to
press on the entire area all around the attachments.
Got any other favorite vacuum leak areas I missed?
---------------------------------
Yahoo! Photos - Showcase holiday pictures in hardcover
Photo Books. You design it and we'll bind it!
