Along with Tom P's suggestions about finding/fixing vacuum leaks, make sure
the ignition system is 100% perfect before tinkering with the settings on
the injection system. Often people jump to the fuel delivery system when
the ignition system is at fault.
Good luck -
Larry T (67 MGB, 74 911, 78 240D, 91 300D)
www.youroil.net for Oil Analysis and Weber Parts
Test Results http://members.rennlist.com/oil
PORSCHE POSTERS! youroil.net
Weber Carb Info http://members.rennlist.com/webercarbs
Porsche Road Test http://members.rennlist.com/roadtest/
.
----- Original Message -----
From: "Potter, Tom E" <[EMAIL PROTECTED]>
To: "Mercedes Discussion List" <mercedes@okiebenz.com>
Sent: Tuesday, November 28, 2006 8:59 AM
Subject: Re: [MBZ] [MB] Please help me to find another maillist
I would start my troubleshooting by making absolutely sure that all the
vacuum leaks are fixed. This is the cause of "hunting" rpm 90 percent of
the time. I just fixed this problem on my granddaughter's Taurus last
weekend. I found a vacuum leak at the EGR valve rubber elbow. I would
suggest a mechanic's stethoscope or WD-40 to find the leak. Don't forget
the oil filler cap and the oil dipstick seals as sources of leaks.
Tom Potter
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of David Brodbeck
Sent: Tuesday, November 28, 2006 1:16 AM
To: Mercedes Discussion List
Subject: Re: [MBZ] [MB] Please help me to find another maillist
...
One really basic, but important, item to look for is false air. Any
vacuum leak that lets air into the intake without going through the
airflow meter will cause idle problems. Common culprits are the bellows
at the ends of the intake pipe and the injector seals, but any of the
vacuum hoses can cause problems.
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