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Page 9+: 60 results shown for Compression pressure.

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

• Re: Question about testing O2 sensor with digital meter
  Historical mailing list - mdrillock
  Fri, 26 Sep 2008 18:24:48 -0700
  ...Diesels inject fuel under tremendous pressure right into the cylinder when it is already at the top of the compression stroke. I have AHU...
• Re: dumb fuel injection question
  Historical mailing list - John Rodgers
  Wed, 27 Jul 2011 17:26:24 -0500
  ...When the intake valve snaps shut, compression is already well under way and a split second later the plug fires. The piston reaches top...
• re: '82 Diesel Smoke
  Historical mailing list
  Mon, 4 Mar 96 18:16:36 EST
  ...The root of the problem is that not enough pressure and/or temperature is created during compression to ignite the air-fuel mixture. When...
• Re: 82 engine weak, what's wrong?
  Historical mailing list - Gary Shea
  Tue, 14 Apr 1998 14:15:24 -0600
  ...A top-end rebuild only helps with compression if the valve seals are bad or the valves beat up or the head cracked (don...
• Re: Valve adjustment
  Historical mailing list - Bob Donalds
  Mon, 20 Dec 1999 09:24:44 -0500
  ...also test the compression afterwards but wait a day or so for the lifters to self adjust. dont forget to do the compression test...
• Re: Bad Valve Issues/Question, Opinion sought.
  Historical mailing list - Jeff Strickrott
  Thu, 26 Sep 2002 15:47:37 -0400
  ...When I tested the fuel pressure it was 36 psi when the vacuum hose disconnected at the regulator (up to spec), and 29 when...
• Re: Fuel Injector (or wiring) Question: Deceleration, Fuel Shutoff Mode
  Historical mailing list - Dennis Haynes
  Sat, 28 Jul 2012 09:35:11 -0400
  ...The front two cylinders having lower compression can be an indication of a problem including worn camshaft lobes. A 20 pound difference can be...
• Re: problem 86 camper weekender
  Historical mailing list - Jack Pronovost
  Tue, 19 Mar 2002 12:22:01 -0800
  There is a small vacuum line from the fuel pressure regulator to the manifold body. Look for a leak or cracked line, or a...
• Re: good 2.1 WBX motor for sale, complete
  Historical mailing list - W Monk
  Wed, 25 Nov 2009 17:48:35 -0500
  ...Good > compression and old pressure; no leaks. Have records > since about 80,000 miles. This motor has taken me > on many great adventures and...
• Re: Boston Bob Big Valve Update? Not really... (LONG)
  Historical mailing list - Benny boy
  Fri, 18 Feb 2005 17:55:24 -0500
  ...Marc I didn't read all post but am sure that someone suggested -a fuel pressure test -an AFM swap -A FUEL REGULATOR SWAP...
• Re: Fuel ponderings
  Historical mailing list - John Bange
  Tue, 1 Nov 2005 09:03:27 -0800
  ...from a higher pressure, giving the engine a greater differential to begin with. Of course the problem with raising the compression is pre-detonation...
• Re: 2.1 WBX Push Rods. Make Sure They're Seated! Was: 2.1 wbx rocker, pushrods
  Historical mailing list - Neil N
  Sun, 21 May 2017 12:21:30 -0700
  ...This is done with the rocker arm installed, using light pressure to hold the rocker in place until you feel the push rods are...
• Re: cooling system diagnostic help? Long, lots of info about whats been done so far.
  Historical mailing list - Don Hanson
  Mon, 26 Apr 2010 06:05:26 -0700
  ...presence of exhaust gasses in your pressure tank - > a > >pretty sure confirmation of our diagnosis. > > > >Karl Wolz > > > > Compression testers are cheap.... > > > > Rob > becida@comcast...
• Air-cooled engine help!
  Historical mailing list - Mark Sheflo
  Mon, 11 Mar 2002 22:17:13 -0800
  ...about. Timing spot on. Compression check: 1 = 0 2 = 110 3 = 115 4 = 110 Symptoms: No excess crankcase pressure Wet (gas) but clean spark...
• Re: Shaft and compression
  Historical mailing list - Adrian Bertarelli
  Thu, 9 Dec 1999 21:49:10 -0700
  ...A compresion leak test will measure how much pressure it will hold giving you a good idea of what to look for internally in...
• Re: Diesel Westy Water pump replacement.
  Historical mailing list - Scott Daniel - Turbovans
  Sun, 1 Jul 2012 21:53:36 -0700
  ...This must be why it doesn't keep 15psi pressure in the cooling system. From cold it builds pressure first, pressure caps opens and...
• Re: No compression
  Historical mailing list - Dennis Haynes
  Mon, 15 Dec 2003 17:19:37 -0500
  ...If the bottom end is good,(good oil pressure, maintained) and the case is not warped or otherwise tweaked, then new pistons and cylinders...
• Re: Another trip to SWFL
  Historical mailing list - Scott Daniel
  Sun, 20 Oct 2013 20:03:39 -0700
  ...Those numbers were things like > compression numbers, oil analysis numbers, crankshaft runout, end play, > oil pressures, oil leaks, etc. If such are good - drive...
• Re: 2.1 wbxer stubblin' idle
  Historical mailing list - Scott Daniel - Turbovans
  Tue, 4 Aug 2009 16:19:17 -0700
  ...I always feel better with a fuel pressure gauge on it.... the fuel pressure and delivery side of it is seldom the problem in...
• Re: How far is this Vanagon insanity going to go?
  Historical mailing list - Michael Snow
  Mon, 27 Jan 2003 19:18:34 -0800
  ...oil changes making valve adjustments, recording oil pressures, > recording manifold vacuum readings and eventually checking compression > readings. A sure sign of obsession. Who but...
• Re: what clues about engine health can I get...
  Historical mailing list - Scott Daniel - Turbovans
  Tue, 15 May 2012 23:44:05 -0700
  ...wrote: > >> Factory oil pressure spec is based on 3 data points: engine speed, temperature and pressure. 2000rpm, 80C, 2 bar. If you're not...
• Re: what clues about engine health can I get...
  Historical mailing list - Scott Daniel - Turbovans
  Tue, 15 May 2012 17:02:48 -0700
  ...otherwise ..you know when it's well warmed up but likley not 'that hot.' oil pressure at an oil temp of 'par warmed up...
• Re: Coolant Overpressurization / Head Gasket Leak
  Historical mailing list - Walter Houle
  Sun, 27 Jan 2013 15:33:46 -0500
  ...As part of the leak down test, by pass the >> gauge and apply full shop air pressure to the cylinders (secure the >> crankshaft securely...
• Re: Loss of power at altitude
  Historical mailing list - Karl Wolz
  Mon, 11 Mar 2002 18:47:22 -0700
  ...With the turbo you > can control the manifold pressure and there is adequate compression capacity > to overcome the atmospheric pressure reduction. > > The reason that...
• Re: Starts strong Now No Start HMMM
  Historical mailing list - Dennis Haynes
  Mon, 21 Apr 2014 19:51:54 -0400
  Lifters pumping up and holding the valves open is usually caused by excessive oil pressure, blocked channels in the push rods or rocker arms...
• Open Request for Bentley Book Topics/Titles
  Historical mailing list - Marshall Ruskin
  Mon, 18 Jan 1999 20:43:47 -0600
  ...Using a compression tester, using a fuel pressure gauge, using a timing light to set up timing etc, within the context of our "beloved...
• Re: Compression tester question
  Historical mailing list - neil N
  Fri, 16 Nov 2007 10:56:28 -0800
  ...This type of gauge should hold its' pressure. (it has a release valve) I may exchange the compression tester. Neil. On 11/16/07...
• Re: On the road and need some help
  Historical mailing list - John Rodgers
  Sun, 20 Feb 2011 21:57:40 -0600
  ...You should feel a push if there is compression. This is not a definitive compression test by any means, but it will give you...
• A rod bender?
  Historical mailing list - Richard C Welsh
  Tue, 2 May 2000 14:01:39 -0400
  ...I was doing a compression test with the plugs and injectors pulled. (i didn't yet realize the fuel pressure regualtor was letting gas...
• Symptoms of Bad Lifters?
  Historical mailing list - James Wagner
  Sun, 16 Feb 1997 21:44:16 -0500
  Hello, I have an 85 Vanagon Camper which experienced low oil pressure around idle and loud valve noise. The power would diminish as the...
• cause and effect, or not
  Historical mailing list - mark drillock
  Tue, 18 Oct 2011 13:04:07 -0700
  ...Checked compression, all ok. Did fuel pressure and fuel delivery test, all good. Unhooked intake snorkel hose to air cleaner, no help. I suggested...
• Diesel Westy Mileage?
  Historical mailing list - Tom Cook
  Wed, 18 Nov 1998 12:14:18 -0500
  ...compression around 450lbs/cylinder when installed although I am not sure if that affects mileage or not. I have also checked my tire pressure...
• Got skunked yesterday by 2.1L NoStart
  Historical mailing list - OlRivrRat
  Thu, 12 Sep 2024 10:20:17 -0600
  ...Temp 2 - tried unplugged and shorted tried starting with fuel relay removed quick checked cyl pressure on 2 while plug was out, good compression...
• Re: Cooling system '85 1.9
  Historical mailing list - Dave Bohannan
  Sun, 29 Oct 2017 17:12:28 -0400
  ...I had a small crack between a bolt hole connected to the water jacket and the cylinder… I would pressure test it first it...
• Re: YAHOOOO (well, almost)
  Historical mailing list - Doktor Tim
  Sun, 3 Nov 2002 12:57:23 -0800
  ...Then next comes verifying the fuel pump and pressure regulator. You can't skip that just cause you don't want to buy a...
• Re: 112HP wasserboxer in non U.S. Vanagons
  Historical mailing list - Gary McEachern
  Sat, 6 Apr 2002 08:56:02 -0500
  ...The engine code is different, the compression ratio is higher and the engine requires hi-test as Sam says. The engine code and characteristics...
• Re: Dipstick popping out
  Historical mailing list - Craig Standley
  Wed, 7 Oct 1998 14:08:36 -0700
  ...Is this > normal??? It does not require much effort to pull it out, but should there be > enough pressure behind it to do this...
• Re: super vs. regular?
  Historical mailing list
  Mon, 19 Sep 1994 07:52:39 -0400
  ...Reason is, higher compression engines will create enough compression pressure to detonate the fuel mix before the spark even goes off -- obviously undesirable. Can...
• pushrods, compression, brake parts prices
  Historical mailing list
  Tue, 7 Nov 1995 12:49:12 -0800
  Ed, Those are awesome compression numbers- they also seem a bit high, but what's most important is that they're all VERY close...
• Re: Wondering about coolant physics
  Historical mailing list - Larry Alofs
  Fri, 1 Jan 2016 16:56:05 -0500
  ...Do you think that this would produce less accurate pressure/vacuum readings than running a line from the engine compartment? Larry A. On Fri...
• Re: Transporter Room Three.
  Historical mailing list
  Thu, 1 Dec 1994 10:15:36 -0500 (EST)
  ...What is 'blow-by'? Something Porsche 911s do on the > outside lane? :) Ahhh...My favorite topic :-( Blowby in diesels happens because the compression ratio...
• Re: More Idle Problems
  Historical mailing list - lauterba
  Tue, 30 Dec 2003 00:53:24 -0500
  ...t keep oil > pressure at 850 rpm idle, which causes the lifters to stop lifting, > leading to loss of compression and engine stall. This...
• Re: 85 GL Radiator Fan Problem
  Historical mailing list - t
  Sun, 4 Jun 2000 21:30:28 -0700
  ...What I was refering to is compression continually entering the coolant system therefore always pressurizing the system well beyond the 7 lb limit. It...
• Euro-Elec: FIX 91 Volkswagen Vanagon, idiot lights, oil light
  Historical mailing list - "Richard Meissenheimer (by way of Derek Drew )"
  Tue, 15 Feb 2000 02:02:21 -0500
  ...They said they had checked the compression and oil pressure on this one, yet both oil pressure switched were buried in filth and the...
• Re: Cooling Fan - '91 Carat
  Historical mailing list - Dennis Haynes
  Sat, 20 Sep 2014 00:14:00 -0400
  ...not also running. Compression test without a leak down test is an incomplete test. The leak down with full shop pressure bypassing the gauge...
• Re: Suburban Type Furnace Install;
  Historical mailing list - W Monk
  Fri, 30 Oct 2009 14:07:04 -0400
  ...I was just curious if the compression side of the 5/16 connector I bought from you was also BSPT. I already marked the...
• Heip!! New engine won't start (longish)
  Historical mailing list - Tom Young
  Fri, 9 Jul 1999 13:43:51 -0700
  ...Put a fuel pressure gauge on the rail and I'm getting good pressure. Pulled the injector plug on #4 and tested with a...
• Re: Should I really bother with oil pressure test?
  Historical mailing list - Frank Condelli
  Tue, 2 Jun 2009 06:13:13 EDT
  ...Ed, the only thing an oil pressure test is gonna do now is tell you more of what you already know. If the oil...
• what steps can be taken to diagnose head gasket problems?
  Historical mailing list - Robbie Cotner
  Mon, 31 Jan 2005 14:28:02 -0800
  ...What should I ask him to look for? My thoughts: -Compression Test -Leak-down Test -Cooling system pressure Test -Visual inspection(of what?) The...
• Re: Low idle, hard cold starting
  Historical mailing list - Larry Alofs
  Wed, 10 Jan 2007 20:55:08 -0600
  ...fuel pressure regulator, fuel filter, bad compression, idle >stabiliser, plugs, wires, dist. cap, rotor, vacuum leak, AFM, throttle body, >low battery voltage at startup...
• higher octane needs
  Historical mailing list - gary hradek
  Fri, 28 Dec 2001 07:58:05 -0800
  ...The equation says that if pressure goes up and the volume stays the same then Temperature has to go upas well. If you ajust...
• Re: No fuel pressure options?
  Historical mailing list - Scott Daniel
  Thu, 31 Oct 2013 11:17:46 -0700
  It's not neccessary to remove the screw from the fuel pressure testing port to bleed the fuel lines. It's a contiuously circulating...
• Re: '86 up vanagon owners....you still need an oil gauge!
  Historical mailing list - Stuart MacMillan
  Wed, 30 Aug 2000 08:51:33 -0700
  ...of your oil pressure! My situation: 1990 used engine, 140,000 miles at failure, heads done at 90,000. Compression: 132-136 psi. High...
• Re: Help ..
  Historical mailing list - Stuart MacMillan
  Thu, 7 Sep 2000 13:52:27 -0700
  ...On my first long trip with the van the oil pressure light came on after about 90 minutes of highway driving , again the the...
• Fuel pressure & injectors
  Historical mailing list - Michael Townsend
  Thu, 9 Aug 2001 09:12:28 -0400
  ...inject before the compression stroke!! I have a mechanic friend who checks for leaky injectors by hooking up a fuel pressure guage, running the...
• Re: lost brake line...
  Historical mailing list - Scott Daniel - Shazam
  Mon, 24 Dec 2007 20:19:41 -0800
  ...lbs of pressure, but I could be brain farting. Now are not the connection to the valve block and brake a compression fitting too...
• Re: Rich Running 1.9l WBX
  Historical mailing list - C B
  Wed, 9 Jun 2010 18:49:25 -0700
  ...I all ready checked compression, which is fairly even across all cylinders, unchanged from when I acquired the van, and within normal range; about...
• Here's one to rack your brains............
  Historical mailing list - Vic Ahmed
  Tue, 9 May 2000 20:04:36 EDT
  ...Towed it back, ran a pressure test on it, zero, so I pulled off the pressure relief valve, it fell out smoothly, and the...
• Re: new motor for '87 synchro westi
  Historical mailing list - Dennis Haynes
  Mon, 11 Sep 2000 06:34:53 -0700
  How many miles are on the engine? What is the compression in the other cylinders? Why is the compression low? Maybe you do not...
• diesel mechanics
  Historical mailing list
  Thu, 18 Aug 1994 14:45:03 -0400 (EDT)
  ...It was their learned opinion that the seals were blown due to excessive blow-by creating too much pressure in the crankcase. So, they...