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Search preserved mailing-list messages and current email and website contributions. Current posts are searchable before weekly archival. Recovery gaps remain possible. Words are matched together; try fewer terms if needed.

Page 2+: 60 results shown for Intake Valve.

Source-balanced relevance: matches from both collections are interleaved, with source dates breaking ties. Restoration time is not the original posting date.

• digifant injection
  Historical mailing list - Allan Streib
  Mon, 6 Apr 2009 21:50:48 -0400
  ...Does the fuel vapor just sort of accumulate behind the intake valve until the intake stroke for that cylinder? Surely 3/4 of the...
• Re: Why do I have four bent Intake valves?
  Historical mailing list - ROBERT DONALDS
  Thu, 7 Apr 2005 09:07:07 -0400
  ...Why do I have four bent Intake valves? >I put a starter on my 86' 2.1 and... > > I heard some strange noises spinning...
• Re: dumb fuel injection question
  Historical mailing list - Mike
  Wed, 27 Jul 2011 21:34:37 -0400
  This is why there's very little time actual "waiting" for the intake valve to open. Effectively almost none at all. 'Closed' is a...
• Re: CO Adjusting Screw, Throttle Valve Switch Test Light Video etc.
  Historical mailing list - Jeff
  Tue, 26 Jun 2012 21:47:25 -0700
  ...CO Adjusting Screw, Throttle Valve Switch Test Light Video etc. I'm so glad you mentioned that for people. Most people working on their...
• Re: Ratio Rockers with swivel/roller tips?
  Historical mailing list - Robert Lilley
  Fri, 13 Jul 2001 14:42:19 EDT
  ...If you add the bigger valve heads, change the pistons to 95 mm big bore to create a stronger pull on the intake or...
• Re: resealing heads - found missing metal on top of valves
  Historical mailing list - John C...
  Tue, 23 Sep 2008 20:24:09 +0000
  ...pdooley <psdooley@VERIZON.NET> > Are you talking about the pitting on the intake valve faces? > The material is most likely inferior. > > Question- did you...
• Re: port matching intake manifolds to heads
  Historical mailing list - Bob Donalds
  Mon, 21 Jan 2008 18:14:38 -0500
  ...Looked at four 2.1 heads ..........relief or pocket for intake valve looks the same to me. 025 103 375 C on those. Please...
• FS: new valves
  Historical mailing list - Hector Zapata
  Sun, 16 Jun 2013 14:25:33 -0400
  I have four each brand new intake and exhaust valves from brand new 2.1 AMC heads. $5.00 ea. plus shipping. If there...
• Re: Valve clearance not at tdc?
  Historical mailing list - Bruce Nadig
  Fri, 15 Apr 2005 22:01:17 -0500
  ...As cylinder #1 begins its intake stroke the exhaust valve will remain closed while the intake valve will be open. As the piston rises...
• Re: NVC Might be of interest to some Porsche for sale not mine
  Historical mailing list - Mike
  Tue, 19 Aug 2008 06:32:06 -0400
  Only the 914 2.0 had different intake bolt pattern (3 studs instead of 4), different plug angle (tin to match) and larger valves...
• Re: Bad intake valve @ 30,000 miles????
  Historical mailing list - John Rodgers
  Fri, 4 Jul 2003 09:01:58 -0500
  ...On the low cylinder only I heard obvious >leakage at the intake manifold. So the leak is through the intake valve. >I >tried to...
• Vacuum line P/N's
  Historical mailing list - John Lauterbach
  Sat, 29 Jan 2000 14:12:48 -0500
  ...The two that I am most interested in are the one from cold start valve to intake manifold and the one from intake manifold...
• Re: CO Adjusting Screw, Throttle Valve Switch Test Light Video etc.
  Historical mailing list - Scott Daniel - Turbovans
  Tue, 26 Jun 2012 21:26:55 -0700
  ...CO Adjusting Screw, Throttle Valve Switch Test Light Video etc. > > On 6/26/2012 6:23 PM, neil n wrote: >> The TB seal may...
• Re: Hi Lift Cams, Rockers
  Historical mailing list - pensioner
  Sun, 3 Jun 2001 13:51:59 -0700
  ...The effect is to have the intake valve open faster and close faster with the obvious increased accelerations of the valve gear. This may...
• Requested suggestions - cleaning crud (carbon deposits) from valves / ports in cylinder head
  Historical mailing list - Herr Wibo Fichten
  Mon, 29 Mar 2004 23:47:41 -0400
  ...Lots of brownish carbon on exhaust valves / ports and some black creosote type stuff on the very botom flange part of the intake valves...
• Re: Getting a handle on Idle problems...
  Historical mailing list - Joel Walker
  Sun, 20 Apr 2003 23:54:01 -0500
  ...book ... " Idle stabilization valve - electronically controlled valve used to maintain idle speed at a pre-determined level by regulating intake air at idle. location...
• Re: Backfire thru intake ?
  Historical mailing list
  Wed, 26 Jul 1995 09:20:46 -0500 (CDT)
  As Ralph points out, a backfire can damage the intake box. One way to protect that expensive piece of equipment is to NOT use...
• More information -- van in DeLand
  Historical mailing list - John Lauterbach
  Sat, 3 Dec 2011 07:12:40 -0500
  ...I called Ron before heading north yesterday. #1 intake valve suck in the valve guide. Ron has head off and will go to machine...
• Re: Fuel tank pressurized
  Historical mailing list - Robert Donalds
  Wed, 12 Feb 2003 08:52:56 -0500
  ...Trace the plastic purple vacuum hose from the intake manifold to the valve. the valve most likely has a hole in it and that...
• Bent Valve Part II
  Historical mailing list - James Wagner
  Sun, 9 Aug 1998 18:30:59 -0400
  Thanks to those who sent me advice on the first part of my stuck intake valve episode. Now I've removed the head and...
• Re: WBX big valve heads and flow bench results
  Historical mailing list - David Marshall
  Sun, 24 Jun 2001 21:40:28 -0700
  ...Flow bench test results 1 stock AMC head intake port 2 ported and polished AMC head stock valve intake port 3 Boston Bobs big...
• Re: CO Adjusting Screw, Throttle Valve Switch Test Light Video etc.
  Historical mailing list - Dave Mcneely
  Wed, 27 Jun 2012 08:59:51 -0500
  ...CO Adjusting Screw, Throttle Valve Switch Test Light Video etc. > > I'm so glad you mentioned that for people. > Most people working on their...
• Re: Rich on side, lean the other?
  Historical mailing list - Scott Daniel - Shazam
  Mon, 17 Sep 2007 23:07:41 -0700
  ...When the piston is descending on the intake stroke, with the intake valve open, it wouldn't matter if the intake valve guide was...
• Re: Poor Hot Start Discovery - midway through solution
  Historical mailing list - neil n
  Sun, 26 Aug 2012 15:51:25 -0700
  ...Thought if purge valve failed fumes might get into intake via the larger hose from the purge valve. but maybe my logic is wrong...
• Re: FrontFire?
  Historical mailing list - Dennis Haynes
  Sun, 14 May 2006 15:23:46 -0400
  Maybe a leaking intake valve is causing the bad idle. Time for a leak down and compression test. Leaking/sticking intake valves on SMC...
• Re: 2.1 WBX Coolant Loss: Searched Compression test results.
  Historical mailing list - Neil N
  Sun, 3 May 2015 09:48:32 -0700
  ...Intake valve : Air whistling out of the intake, carburetor or throttle body indicates a leak at the intake valve. Exhaust valve : Air heard hissing...
• Re: WTB: 2.1 Intake Parts
  Historical mailing list - kenneth wilford (Van-Again)
  Mon, 13 Nov 2023 08:08:57 -0500
  ...1 intake plenum > - 2.1 3 groove pulley > - 2.1 intake boot > - 2.1 air box > - 2.1 idle air control valve and rubber...
• The Lost is Found!
  Historical mailing list - David Baker
  Wed, 28 Aug 2002 15:34:09 -0500
  Found it! The throttle valve switch is located waaaay underneath the throttle intake housing. I was looking for it directly beneath the control mechanism...
• Re: strange cut off problem with wbx vanagon update
  Historical mailing list - Daniel L. Katz
  Wed, 2 Feb 2005 14:40:01 -0500
  ...not properly venting vapors to air intake. therefore, pcv really doesn't mimick action of flapper valve in properly functioning black tower. next try...
• PCV valve mod/re-route (Jetta Conversion) PICS
  Historical mailing list - neil N
  Mon, 12 May 2008 14:46:57 -0700
  ...PCV valve typically allow a little oil to get past it? On my Jetta 2.0, if I route the air intake hose like...
• Re: FYI - Use Detergent Gasoline
  Historical mailing list - David-M
  Sun, 10 Jan 1999 19:21:14 -0500
  ...Gasoline containing detergents > > VW US Inc recommends the use of gasolines which contains detergents to keep intake valves and fuel injectors free of deposits...
• Re: Bent push rod jammed into rocker and damaged valve
  Historical mailing list - Dave Bayer
  Fri, 7 Aug 1998 19:09:55 -0700
  ...I found that the >| push rod for the number four cylinder intake valve had come loose and >| jammed in-between the rocker and the...
• Re: 1.25 or 1.4 rocker arms?
  Historical mailing list - Robert Donalds
  Sat, 27 Oct 2001 21:32:59 -0400
  ...Flow bench test results 1 stock AMC head intake port 2 ported and polished AMC head stock valve intake port 3 Boston Bobs big...
• FI systems query
  Historical mailing list - Joel Walker
  Fri, 19 Aug 94 20:44:56 CDT
  ...the same time and inject fuel directly into the intake manifold near the intake valve. Injection quantity is controlled by the amount of time...
• compression and leak down test
  Historical mailing list - Jamie Foust
  Wed, 23 Aug 2006 08:35:29 -0500
  ...I placed my fingers inside of the intake ports touching the back side of the intake valves, but was unable to feel any air...
• Re: misfire - diagnosis of problem?
  Historical mailing list - Ken Lewis
  Mon, 4 Oct 2004 14:03:17 -0400
  ...filler to try and determine if the leak is an intake or exhaust valve or rings. Ken Lewis 86 Transporter Crew Cab 60 356...
• A cause for Increased Oil Consumption with Ratio Rockers (and those without)
  Historical mailing list - Robert Lilley
  Tue, 9 Jul 2002 07:08:39 EDT
  ...intake air. I am wanting to put in a system similar to the Berg oil capture system, but at a smaller cost, plus valves...
• Re: Poor Hot Start Discovery - midway through solution
  Historical mailing list - neil n
  Sun, 26 Aug 2012 20:09:17 -0700
  ...Thought if purge valve failed fumes might get into >> intake via the larger hose from the purge valve. >> > > Oops, I'm sorry. That's...
• Re: dumb fuel injection question
  Historical mailing list - Scott Daniel - Turbovans
  Wed, 27 Jul 2011 15:38:53 -0700
  ...dumb fuel injection question > Three out of four fuel injections get squirted at a closed intake valve. > What possible difference does the injector pattern...
• Why do I have four bent Intake valves?
  Historical mailing list - Jeff Ensing
  Thu, 7 Apr 2005 04:00:36 EDT
  ...It had the normal valve noise after first starting considering it had been sitting for months but it quieted down after driving it and...
• Re: Vacuum Line Routing
  Historical mailing list - Tom Young
  Sat, 19 Feb 2000 13:21:28 -0800
  ...inlets on intake air distributer and on the throttle > valve housing and the connections on the fuel pressure > regulator,deceleration valve, and the vacume...
• Re: Idle stabilizer for 1.9
  Historical mailing list - David Beierl
  Tue, 22 Nov 2016 00:16:09 -0500
  ...are...but how do they tie into the intake? I am unaware >of the valve that will open to allow the extra air in...
• Re: RE Fuel Injection problem found
  Historical mailing list
  Fri, 5 Jul 1996 10:57:38, -0500
  ...contact in intake air sensor (must close to keep pump running), cyl head temp sensor, (resistance too high), bad EGR valve (either leaks or...
• Re: The Head is Off, Assume Cracked?
  Historical mailing list - Dennis Haynes
  Mon, 7 Apr 2014 20:11:01 -0400
  ...Then for the valves that hold, turn the head so the intake ports face up. Fill the ports. Anything that leaks without going past...
• Re: Friday question.Re: Vacuum gauge NVC
  Historical mailing list - Richard A Jones
  Sat, 22 Aug 2009 15:37:58 -0600
  ...intake manifolds ) ...that > tool measures flow above the throttle plate. > > a vacuum gauge measures vacuum developed between the throttle > plate and intake valves. Yes...
• '81 compression update & questions
  Historical mailing list - Linda Bartnik
  Sun, 7 Jun 1998 22:10:50 -0400
  ...It also appears that the stem for the exhaust valve is sitting up higher than that of the intake valve. I tried the straight...
• Re: Engine Dies when cold
  Historical mailing list - Craig Oda
  Tue, 1 Feb 2005 16:06:37 -0800
  Auxiliary air valve has an internal metal valve that dies. There's a test procedure in Bentley. pinch off the aux air intake pathway...
• Cam timing
  Historical mailing list - Pensioner
  Sun, 19 Aug 2007 21:44:50 -0700
  ...Overlap is the degree (Degrees/360) of total rotation where both the intake and the exhaust valves are open at the same time. The...
• Complete 2.1l Difigant setup FS $500
  Historical mailing list
  Mon, 12 Apr 1999 21:55:21 EDT
  ...This includes the AFM and air box, the idle stabilizer unit, idle stabilizer air valve, air intake setup, air intake plenum and boot, distributor...
• Re: Compression braking & Power Loss
  Historical mailing list - John Bange
  Fri, 24 Feb 2006 08:27:57 -0800
  ...With your foot off the gas the throttle plate, that big butterfly valve in the middle, blocks off the source of intake air except...
• Re: Broken valves solved
  Historical mailing list - ChuckKuecker
  Tue, 31 Mar 1998 08:15:08 -0600
  At 01:31 3/31/98 -0800, you wrote: >Tonite I pulled the head to find the intake valve on #3 had seized on...
• 2.1 parts on e-bay
  Historical mailing list - Rob
  Fri, 28 Jul 2006 05:30:38 -0700
  Throttle body, intake bellows, idle stabilization valve & spring. All from an '87 2.1 http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=290011712875...
• Wading depth & a question
  Historical mailing list - Greg Morrison
  Wed, 19 Jan 2000 10:37:16 EST
  ...The same Syncro manual also refers to an "intake air preheater valve located on the right behind the maintenance flap" and the need to...
• Re: Engine worries return
  Historical mailing list - Neil N
  Sat, 29 Jul 2017 14:01:49 -0700
  ...new intake manifold gaskets, maybe new cork valve cover gaskets, maybe new boots between each intake runner and intake plenum if yours are old...
• Re: Bad Valve
  Historical mailing list - Don Deitke
  Mon, 2 May 2005 13:36:21 EDT
  ...valve air will come out the end of the muffler // Bad Intake valve - air will come out the intake system = remove air intake boot...
• Re: 1980 vanagon EGR valve/cleaning???
  Historical mailing list - G.M.Bulley
  Mon, 12 Feb 2001 11:25:32 -0500
  ...In step #9 the "intake distribution pipes" I speak of are the tiny (3-4 mm) pipes inside the intake manifold that inject exhaust...
• Re: Intake manifold connectors 2.1l
  Historical mailing list - Stan Wilder
  Mon, 30 Apr 2001 16:14:20 -0500
  ...It only contacts fuel when your cold start valve comes on.
• Re: [DIESEL] breather valve...where does it go on 1.9TD
  Historical mailing list - Southard
  Sun, 22 Aug 1999 23:09:16 -0400
  ...One end of the tee connects to the Blow-Off valve on the end of the intake manifold. The other end of the tee...
• I have a dificult one (Very thecnical/Aircooled) NVCBBC
  Historical mailing list - Benny boy
  Sat, 20 Nov 2004 00:10:13 -0500
  ...Valve diameter = 41mm intake / 34mm Exhaust Bore and Stoke = 93mm bore / 66mm for stroke Case = AW014863 Head # = 021-101-371S (still not sure of...
• Re: The Head is Off, Assume Cracked?
  Historical mailing list - JRodgers
  Mon, 7 Apr 2014 20:14:00 -0500
  ...If the cleaner goes into the coolant chamber test is done. > Then for the valves that hold, turn the head so the intake ports...