'82, 617 w/ pencil plugs. Correct me if I err, the circuitry in the GPR compares the resistance value of #1 with the sum of the other four. Should be 1:4 but at minimum 1:3. In my case #1 was dead (OL:4) - thus no light (and no glow at all?). Replacing #1 accomplished light back on (~5 sec.), easier start and lot less smoke on start. It's glowing again!
On Mon, Oct 29, 2012 at 4:00 PM, Curt Raymond <curtlud...@yahoo.com> wrote: > What year? 617 engine? I did glows on my '81 300TD without removing > anything. Its dammed fiddly but can be done. > > AFAIK no light = no glow at least at first, at some point the light goes > out even though glowing may continue. > > -Curt > > Date: Mon, 29 Oct 2012 03:26:44 -0500 > From: Hans Neureiter <diese...@gmail.com> > To: Mercedes Discussion List <Mercedes@okiebenz.com> > Subject: [MBZ] Glows > Message-ID: > <caojz3l9bygpw5xkak2vtbozgq5n8yvu2ytk3nrzpadgayjj...@mail.gmail.com> > Content-Type: text/plain; charset=ISO-8859-1 > > My old 300SD became hesitant to start lately. Lots of smoke for the first > minute or so. > No Preglow light. Tested the plugs and found #1 dead. > I attempted to change all the plugs but gave up after #1 (Light comes on > again). > I removed the fuel lines between the delivery valves and injectors but > could not figure out how to reach #5 plug. Coolant return line from heater > and filter housing in the way. > Two questions: > Is it possible to replace #4 & 5 plugs without removing the obstructions? > Does the preglow system work in spite of no indicator lght? > > -- > Hans Neureiter, Katy, TX > '82 300SD > '01 VW New Beetle 1.9L TDI > > _______________________________________ > http://www.okiebenz.com > For new and used parts go to 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 > -- Hans Neureiter, Katy, TX '82 300SD '01 VW New Beetle 1.9L TDI _______________________________________ http://www.okiebenz.com For new and used parts go to 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
