Dr Booth used to say that every cold weather start for a diesel was a compression test.
Dwight Giles Jr. 1972 300CD 2005 E320 4matic Wickford RI On Dec 28, 2017 5:50 PM, "Robert Massmann via Mercedes" < mercedes@okiebenz.com> wrote: Andrew, Sounds a little like my 85 300CD, I had too stop driving it in the the winter time because it wouldn't start even with fresh glow plugs. Turned out to be low compression, which is needed to get the fuel to ignite. Glow plugs draw at least 10 amps and then drops of slightly as the plug warms up. You could also check and see if you may have a large voltage drop on the individual glow plug wires to make sure you do not have higher than normal resistance in each of the glow plug wires. To much of a voltage drop means the cglow plug will not get full voltage and will not heat up fully as needed! Regards, Bob Massmann Oregonia, Ohio 95 E300D 85 300CD 82 300D 81 VW Rabbit Pickup 2002 BMW 525i -----Original Message----- From: Andrew Strasfogel via Mercedes Sent: Thursday, December 28, 2017 4:27 PM To: Mercedes Discussion List Cc: Andrew Strasfogel Subject: [MBZ] Cold starting issue - glow plugs? On my W123 300TD, I am having a hard time getting it started when the temperature dips below 20 F despite the car being plugged into the block heater. It takes 2 minutes of multiple glows and attempts before I can get it fired up. Once I get it started the engine runs as if it were preheated. Question: Does this sound like a glow plug issue? Do the plugs wear out or simply fail? If one is dead will the other 4 start the car, albeit laboriously? Happy 2018 to all, Andrew 1983 300TD 362 K _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
