Date:         Wed, 12 Sep 2007 22:26:44 +0000
Reply-To:     rubatoguy@COMCAST.NET
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Todd Last <rubatoguy@COMCAST.NET>
Subject:      Re: My poor MPG, compression tests results
Comments: To: "Chris S." <mrpolak@YAHOO.COM>

Isn't it unusual that the readings are all the same?
I don't think I have ever seen that in any compression check I have done - but then, perhaps I am the oddball.
I usually find at least one cylinder that is a little different from the rest.

What are the engine builder's experience? Are equal compression numbers the norm?

Is the following general info, still correct?
"
As a rule, most engines should have 140 to 160 lbs. Of cranking compression with no more than 10% difference between any of the cylinders.

Low compression in one cylinder usually indicates a bad exhaust valve. Low compression in two adjacent cylinders typically means you have a bad head gasket. Low compression in all cylinders would tell you the rings and cylinders are worn and the engine needs to be overhauled."


Todd
'88 Westy


 -------------- Original message ----------------------
From: "Chris S." <mrpolak@YAHOO.COM>
> Intake leak on the "normal" side causing a leaner condition?
>
> "Mike \"Rocket J Squirrel\" Elliott" <camping.elliott@GMAIL.COM> wrote: The
> testing continues.
>
> # 1 (right front) compression > 120, plug looks normal.
> # 2 (right rear) compression > 120, plug also looks normal.
> # 3 (left front) compression > 120, plug indicates mixture is rich.
> # 4 (left rear) compression > 120, plug also indicates richness.
>
> right left mixture asymmetry?
>
> --
>
> 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
>
>
>
> ---------------------------------
> Got a little couch potato?
> Check out fun summer activities for kids.