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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 1+: 60 results shown for Pressure cap.

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

Re: Overflow puking water
Historical mailing list - George Goff
Tue, 18 Nov 2003 07:58:39 EST
In a message dated 11/17/03 9:52:35 PM, dabomb@TANJABARNES.COM writes: << He pressure tested my rad cap, found that it...
Re: Blowing coolant hoses.
Historical mailing list - Dan Houg
Wed, 28 Jun 1995 14:49:18 CST6CDT
...sorry. > > then Tim said: > thought about this too, pressure cap should blow off pressure at 15psi or > so, anyone verified a pressure cap malfunction...
Re: coolant pressure gauge
Historical mailing list - Kent Christensen
Fri, 4 Jun 1999 20:24:17 -0600
...Apply pressure to expansion tank. Since the cap on the expansion tank will "open" at a greater pressure anyway, there is no need for...
Re: coolant level rising - A solution?
Historical mailing list - Rico Sapolich
Thu, 23 Aug 2001 12:59:16 EDT
...Tightening the cap to the spigot of the pressure tank seals the valve plate between the pressure tank and the expansion tank. If the...
Re: 4th heater core burst in 1 year!
Historical mailing list - Paul Cavanaugh
Fri, 13 Jul 2001 19:08:00 -0400
Hi Larry, We tested the old pressure cap and found it failed on the weak side - not holding any pressure at all. My mechanic...
DIY / Homemade coolant system pressure testing
Historical mailing list - TinkerMan
Thu, 15 Aug 2002 21:51:50 -0700
...AFAIK, that pressure release cap has a 15psi threshold that releases extra pressure into the coolant reserve tank and sucks coolant back when vacuum...
Re: 4th heater core burst in 1 year!
Historical mailing list - Larry Alofs
Tue, 10 Jul 2001 21:11:40 -0500
...With a working pressure cap, the pressure should never build up high enough to cause the repeated damage you describe. It is logical that...
Re: Checking pressure cap function???
Historical mailing list - Scott Daniel
Sun, 28 Jul 2013 20:58:06 -0700
I would either make a pressure testerfor your cap .. or try another cap. I have seen many vanagon pressure caps not release pressure when...
Re: San Diego area: pressure tank or cap test adapters?
Historical mailing list - Tom Carchrae
Sat, 8 Sep 2012 08:11:47 -0700
The test that I have been more interested in is the ability for the cap to release pressure. Not holding pressure is the least...
Coolant with Zero Pressure
Historical mailing list - Lawrence Johnson
Sun, 14 Oct 2001 22:00:13 -0400
The rad sprang a leak and to limp home I used a zero pressure cap on the 'pressure' tank. I used a spare old...
Coolant leak, expansion tank pressure cap
Historical mailing list - Rick Cooper
Thu, 1 May 2025 07:31:15 -0700
...At the same time, I don't think my pressure cap is properly releasing coolant to the overflow tank as the engiine as it...
Re: Coolant leak, expansion tank pressure cap
Historical mailing list - Rick Cooper
Thu, 1 May 2025 07:35:26 -0700
...Should be: "At the same time, I don't think my pressure cap is properly releasing coolant to the overflow tank as the engine...
Re: San Diego area: pressure tank or cap test adapters?
Historical mailing list - kenneth wilford (Van-Again)
Sat, 8 Sep 2012 06:36:45 -0400
...Does anyone in the San Diego area have a coolant pressure tank or > pressure cap adapters to use with a pressure tester? I'd...
Re: Filling the coolant reservoir...
Historical mailing list - Scott
Tue, 10 May 2016 13:37:45 -1000
Got yer Bentely Manual ? I'm sure in there it tells the release pressure of the Pressure Cap.In Bar and perhaps not psi...
pressure coolant cap thing-y
Historical mailing list - Dan Houg
Mon, 23 Jan 1995 13:12:48 CST6CDT
...Actually, the valve is 2-way because if the coolant system pressure reaches the cap pressure rating, it will purge coolant (there-by relieving...
Re: San Diego area: pressure tank or cap test adapters?
Historical mailing list - Travis Newhouse
Sat, 8 Sep 2012 09:45:35 -0700
...Does anyone in the San Diego area have a coolant pressure tank or >>> pressure cap adapters to use with a pressure tester? I'd...
Re: San Diego area: pressure tank or cap test adapters?
Historical mailing list - Larry Alofs
Sat, 8 Sep 2012 20:00:05 -0400
You should always save those old coolant pressure caps. An old cap which lets air go thru the nipple both ways easily is the...
Re: Filling the coolant reservoir...
Historical mailing list - Scott
Tue, 10 May 2016 12:29:41 -1000
perhaps have the guy google 'coolant recovery pressure cap for automotive cooling systems, then maybe he'll believe coolant expands, such a cap accomodates...
Re: head gasket problem ?
Historical mailing list - Michael A. Radtke
Fri, 21 Sep 2001 11:27:18 -0700
...So, as the engine runs, the cooling system pressure gradually builds until the pressure cap relieves the pressure. But, the gasses leaked from the...
San Diego area: pressure tank or cap test adapters?
Historical mailing list - Travis Newhouse
Fri, 7 Sep 2012 11:35:29 -0700
...Does anyone in the San Diego area have a coolant pressure tank or pressure cap adapters to use with a pressure tester? I'd...
Re: [Diesel-Vanagon] Re: Questions: 1.9l Turbo Diesel Westy running hot. Weak cooling?
Historical mailing list - mark drillock
Mon, 2 Jul 2012 14:35:51 -0700
...Mark Poppie Jagersand wrote: > Update on the '82 Vanagon Diesel Westy hot running issue. >.............. > Pressure cap is now the next suspect. (Since it opens...
Fwd: Pressure cap problem?
Historical mailing list - Richard Golen
Fri, 25 May 2012 13:25:46 -0400
...Pressure cap problem? > > I think my pressure cap on my 87 is dead. Here are the symptoms. Temp gauge is in middle. But coolant...
Re: Cooling System Pressure Testing - make your own tool CHEAP!
Historical mailing list - amy monk
Fri, 23 Mar 2007 10:13:01 -0700
Along these same lines of making your own tools...A garden sprayer and an old brake fluid cap makes a great pressure bleeder. I...
Re: 4th heater core burst in 1 year!
Historical mailing list - Paul Cavanaugh
Wed, 11 Jul 2001 12:24:12 -0400
...With a working pressure cap, the pressure >should never build up high enough to cause the repeated damage you describe. > It is logical that...
Re: Coolant with Zero Pressure
Historical mailing list - Peter Krogh
Mon, 15 Oct 2001 12:47:26 EDT
...Now I've plugged the rad leak enough that it won't leak at all with the zero pressure cap but I'm not...
Re: Filling the coolant reservoir...
Historical mailing list - John Rodgers
Tue, 10 May 2016 17:56:53 -0500
...after problems with the first cap and pressure tank, they put on a new blue cap and pressure bottle. pressure got so high...and...
Cooling system pressure--combustion gases in coolant?
Historical mailing list - Steve Gough
Sat, 27 Jan 2001 15:19:54 -0600
...Have a new (Autozone) pressure cap. I can only think of a few causes: --It's normal for the system to hold pressure like...
Re: coolant level rising - A solution?
Historical mailing list - Malcolm Stebbins
Thu, 23 Aug 2001 13:09:26 -0300
...The cap should relieve system pressure @ > 13-17 psi positive pressure and 0.3-1.45 psi negative > pressure. > > Rich
Re: 86 Coolant Pressure Leak/Problem.
Historical mailing list - Michael A. Radtke
Wed, 25 Aug 1999 07:57:11 -0700
...It's cap is a simple screw on type. The expansion tank cap has two valves. One valve releases pressure (and coolant) into the...
Re: coolant level rising - A solution?
Historical mailing list - Rico Sapolich
Thu, 23 Aug 2001 11:39:40 EDT
...The cap should relieve system pressure @ 13-17 psi positive pressure and 0.3-1.45 psi negative pressure. Rich
Pressure cap problem?
Historical mailing list - Richard Golen
Fri, 25 May 2012 13:24:04 -0400
I think my pressure cap on my 87 is dead. Here are the symptoms. Temp gauge is in middle. But coolant overflow tank fills...
Re: '86 Westy coolant questions
Historical mailing list - Hector Zapata
Sat, 7 Apr 2012 18:32:47 -0400
...So, check which cap you have, who knows. Hector 1990 Carat 'Ursula' > > hi ... > Re pressure testing the cap .. > have you made an adapter gizmo...
Re: Coolant Strangeness
Historical mailing list - Scott Daniel - Turbovans
Mon, 22 Aug 2011 18:48:59 -0700
...What he describes would not check the pressure holding ability of the new cap. You'd need a pressure tester device that tests caps...
Re: Filling the coolant reservoir...
Historical mailing list - Dennis Haynes
Tue, 10 May 2016 20:15:25 -0400
...after problems with the first cap and pressure tank, they put on a new blue cap and pressure bottle. pressure got so high...and...
Re: Blowing coolant hoses.
Historical mailing list
Wed, 28 Jun 1995 16:17:25 -0300
...sorry. > thought about this too, pressure cap should blow off pressure at 15psi or so, anyone verified a pressure cap malfunction. You should blow...
Re: Master Cylinder Reservoir Cap Vent: @ Electrical Connection?
Historical mailing list - mark drillock
Fri, 14 Sep 2012 12:50:30 -0700
...cap with fluid switch, turn on dash brake warning light when low This difference combines with some other wiring differences. 80-84 brake pressure...
Re: pressure testing cooling system
Historical mailing list - Mike Catlin
Sat, 16 Dec 1995 19:36:20 -0800 (PST)
...I'm > assuming that you can only use this tool to apply pressure to the coolant > reservoir, or to test the pressure cap. Hmm...
Re: D17? See Bentley 80.14
Historical mailing list - David Beierl
Sun, 6 May 2012 12:29:45 -0400
...The pressure cap Will. Not. Permit. a pressure higher than the design pressure to remain in the system. That's what the pressure cap...
Re: Testing pressure cap
Historical mailing list - Alistair Bell
Sun, 16 Sep 2007 09:58:57 -0700
...I'll set up something with an old expansion tank so I can apply both pressure and vacuum to the cap. The illustration in...
Re: Blue pressure cap, 1 valve or 2?
Historical mailing list - David Beierl
Mon, 26 Aug 2013 01:34:07 -0400
...valve that kept pressure inside the system but sucked coolant from >the "overflow" tank during cooldown, as the blue cap is designed to do...
Re: Pressure Tester/Adapter for Vanagon
Historical mailing list - Mike Collum
Tue, 1 Jan 2008 11:51:07 -0500
...to the overflow of the expansion tank's pressure cap or by modifying an old cap with a hose barb. Mike Richard Golen wrote...
Re: head gasket problem ?
Historical mailing list - Larry Alofs
Sat, 22 Sep 2001 08:15:46 -0500
...a little. > So, as the engine runs, the cooling system pressure gradually builds until > the pressure cap relieves the pressure. But, the gasses leaked...
Re: Cooling System performance at altitude
Historical mailing list - David Brodbeck
Fri, 6 Jun 2003 21:29:13 -0400
...But I assume the absolute pressure in the cooling system will be lower, because I think the cap just compares the pressure inside the...
Re: Testing pressure cap
Historical mailing list - Larry Alofs
Sun, 16 Sep 2007 11:22:55 -0500
...Of course you need a pressure gauge and some way to attach it. The cap should allow pressure to escape when it gets into...
Re: coolant leak
Historical mailing list - Debbie Walters
Wed, 5 Sep 2001 12:12:26 -0400
There isn't a radiator cap on my van, so where do you attach the pressure checker? BTW, Autozone will let you borrow a...
Cooling System Results - Interpretations anyone?
Historical mailing list - Richard Golen
Mon, 7 Jan 2008 13:20:44 -0500
...I can both blow into the cap and suck through the cap. There doesn't seem to be any pressure resistance in the cap...
Re: Blam! Bleeder valve destruction and some other thoughts!
Historical mailing list - John T
Tue, 28 Mar 2023 13:41:58 -0400
...Did you end up replacing that defective cap with the same style (with the pressure relief lever), or did you replace it with something...
Re: Lost coolant cap?
Historical mailing list - Dan N
Tue, 9 Jan 2018 18:39:45 -0800
...The 2-way blue cap dumps some coolant in it when the pressure exceeds the limit and it sucks the coolant back in when...
Re: Gaskelet leak and overheating
Historical mailing list - Richard Koerner
Sun, 7 Jul 2024 21:06:40 +0000
...When the pressure cap blows off the coolant tank and coolant is lost, sure sign of blown gasket, Right? 2.1 L
Re: A Different Coolant Problem
Historical mailing list - mark drillock
Mon, 9 Sep 2013 12:52:49 -0700
...The normal leaking mode is that the pressure regulation system of the cap fails and then coolant is easily pushed into the overflow through...
Blue coolant cap
Historical mailing list - C Snyder
Sun, 6 Jan 2019 21:20:29 +0000
...It still drips under pressure. I thought the blue cap pressure was something like 15 pounds. This after market one is 20 pounds. Is...
Re: Adaptor to pump ...
Historical mailing list - tinker man
Fri, 21 Sep 2007 17:13:53 +0200
Maybe you don't even have to rip the guts out of the cap, because that cap has two pressure valves in it, one...
Re: Coolant Rising Mystery
Historical mailing list - Peter Krogh
Sun, 24 Mar 2002 14:36:46 EST
I replaced the pressure cap as the first diagnostic proceedure. Even replace it twice. Peter In a message dated 3/24/02 2:28...
weird smog rule
Historical mailing list - gary hradek
Thu, 14 Nov 2002 08:00:26 -0800
JoeFo, Interesting enough I think that it is not pressure that is important for the working cap but negative pressure. It maybe that this...
Re: coolant overflow tank
Historical mailing list - Dennis Haynes
Tue, 26 Feb 2013 00:38:56 -0500
The cap has two valves in it. There is the pressure relief that opens when the pressure in the cooling system reaches the preset...
Testing pressure cap
Historical mailing list - John Meeks
Sun, 16 Sep 2007 11:52:51 -0400
Hi List, Is there a method for testing the coolant expansion tank pressure cap? we just drove Byron (85 GL) back up from his...
Re: Expansion tank cap operation...
Historical mailing list - Larry Alofs
Sun, 28 Aug 2005 21:28:45 -0500
...that the expansion tank cap would pour out >coolant through the cap nipple even though there was very little pressure on >it. Is this...
Re: 84 coolant light.
Historical mailing list - Scott Daniel - Turbovans
Wed, 2 Sep 2009 13:09:40 -0700
...If pressure goes down .......to below pressure cap pressure ( about 14 psi ) then you think about a leak, or air or exhaust getting into...
Re: A Different Coolant Problem
Historical mailing list - Tom Carchrae
Mon, 9 Sep 2013 13:19:21 -0700
...The normal leaking mode is that the pressure regulation > system of the cap fails and then coolant is easily pushed into the > overflow through...
Re: Uh-oh, cooling system way pressurized
Historical mailing list - Rico Sapolich
Sun, 29 Apr 2001 22:37:09 EDT
...Before you do anything else, check the cap on your pressure tank. A small piece of debris can take up residence on the seat...