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Date:         Thu, 13 Sep 2007 12:26:13 -0700
Reply-To:     "Mike \"Rocket J Squirrel\" Elliott" <camping.elliott@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         "Mike \"Rocket J Squirrel\" Elliott" <camping.elliott@GMAIL.COM>
Subject:      Re: How do you check compression?
Comments: To: Larry Alofs <lalofs@gmail.com>
In-Reply-To:  <96c89c360709131145n7c5a51feh5f7b4ac5ceba544e@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

So . . . let the engine idle a minute? 5 minutes?

Mike "Rocket J Squirrel" Elliott 71 Type 2: the Wonderbus 84 Westfalia: Mellow Yellow ("The Electrical Banana") 74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano KG6RCR

On 9/13/2007 11:45 AM Larry Alofs wrote:

> Warm oil will let it crank a little faster, which might increase your > readings slightly. But you don't want to remove the plugs when the > engine is very hot because you may damage the threads in the aluminum head. > Let it crank until the reading stops going up. > > Larry A. > > > On 9/13/07, *Michael Elliott* <camping.elliott@gmail.com > <mailto:camping.elliott@gmail.com>> wrote: > > Engine warmed-up, cold, doesn't matter? > > Counting number of strokes -- is that the number of wuh-wuh-wuh > sounds the > starter makes? > > -- > Mike "Rocket J Squirrel" Elliott > 71 Type 2: the Wonderbus > 84 Westfalia: Mellow Yellow ("The Electrical Banana") > 74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano > KG6RCR > > > > On 9/12/2007 8:29 PM Dennis Haynes wrote: > > > Some more variables. Crank until gauge stops rising. You can hear > the > > change. Count the number of strokes. Should be 4-5. The design of the > > gauge can affect this. The hose length and placement of the valve > will > > make a difference. Of course you will also want to do a leak down > test. On > > older engines it is common for the front two cylinders (1-3), to show > > lower compression then the rear and still check good with the > leak down. > > This can indicate worn cam lobes. > > > > Dennis > > > > -----Original Message----- > > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com > <mailto:vanagon@gerry.vanagon.com>] On Behalf Of > > David Kao > > Sent: Wednesday, September 12, 2007 10:31 PM > > To: vanagon@GERRY.VANAGON.COM <mailto:vanagon@GERRY.VANAGON.COM> > > Subject: How do you check compression? > > > > I was told by a mechanic that when checking compression for a 4 > cylinder > > engine I should get 4 strokes, no more than that, and get the > reading. > > But Bentley Manual says to continue to crank until getting the > highest > > reading. So how do you folks do it? How many strokes on the > average do > > you crank to get the highest reading? > > > > David > > > > > > > > > > > > > __________________________________________________________________________ > > __________ > > Luggage? GPS? Comic books? > > Check out fitting gifts for grads at Yahoo! Search > > > http://search.yahoo.com/search?fr=oni_on_mail&p=graduation+gifts&cs=bz > <http://search.yahoo.com/search?fr=oni_on_mail&p=graduation+gifts&cs=bz> > > > >


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