Re: [MBZ] 1981 300CD glow plug system
kevin kraly wrote: > Hello listers! > = > I'm still tinkering with this 1981 300CD, and it appears that the glow pl= ugs = > aren't working. However, the glow plug light does come on and it goes ou= t = > within 5 sec or so. Is it possible for the GP light to go on when the = > system isn't working? It has the newer style parallel plugs in it. Here's the diagnostic! Marshall -- = Marshall Booth (who doesn't respond to unsigned questions) "der Dieseling Doktor" [EMAIL PROTECTED] '87 300TD 182Kmi, '85 190D 2.0 161Kmi, '87 190D 2.5 turbo 237kmi, '84 = 190D 2.2 229Kmi (retired) -- next part -- A non-text attachment was scrubbed... Name: Glow81_123.pdf Type: application/pdf Size: 78231 bytes Desc: not available Url : http://striplin.net/pipermail/mercedes_striplin.net/attachments/20060= 513/15072aad/Glow81_123.pdf -- next part -- A non-text attachment was scrubbed... Name: glow8184s.pdf Type: application/pdf Size: 47503 bytes Desc: not available Url : http://striplin.net/pipermail/mercedes_striplin.net/attachments/20060= 513/15072aad/glow8184s.pdf
Re: [MBZ] 1981 300CD glow plug system
Thanks, Jim. I'll have to take a feel next time I'm under there. I'll keep everyone posted on how things go. Kevin in Hillsboro Oregon 1981 300CD 204K miles, Giesela
Re: [MBZ] 1981 300CD glow plug system
I've felt the setup on the driver's side fender before (the one that also contains the two (ice cube) relays, but I've never checked to see what else was in there. Nothing else is in there, that's not it. Look (or feel) forwards of that. The relay box cover has a latch, the GP relay has a cover that just pulls off. In size it's a bit like that of the relay box, but sideways. (Long direction along the fender wall.) -- Jim
Re: [MBZ] 1981 300CD glow plug system
Thanks, Jim. I've felt the setup on the driver's side fender before (the one that also contains the two (ice cube) relays, but I've never checked to see what else was in there. I do have some eyes that can tell me if everything's as it should be. The tires on the car are very worn, so I'll have to address that before we take it on some flogging runs. The weather is getting much nicer, so it's time to roll down the windows, open the sunroof, and enjoy the fresh air! Kevin in Hillsboro Oregon 1981 300CD 204K miles, GIesela
Re: [MBZ] 1981 300CD glow plug system
Where are both the relay and the strip fuse on a 1981 300CD? Ought to be on the driver's-side fender, front and center. Black, with a snap-off dust cover, can't miss it. I think by '81 it had moved to there from atop the steering column, where it used to live with the series plug system. (And the strip fuse was on the firewall.) There is an outside chance that nothing short of a miracle and some hard,hard, hard flogging will do the trick. I'm still hoping it's crudded-up rings rather than just simply worn out. Hard driving can make an incredible difference. Witness my 240D that was (when I got it) faster in first gear than second. Once the throttle linkage was corrected it was still a slug, but hard driving has restored it to the peak of horsepower perfection that is a 240D automatic. (And it's still for sale!) One thing's for sure, unless your car is running right and has been for awhile there's no point in a compression test. And of course if it _is_ running right, why do one at all? -- Jim
Re: [MBZ] 1981 300CD glow plug system
The GP relays themselves can fail, too. How's its fuse? Where are both the relay and the strip fuse on a 1981 300CD? Believe it or not, this is the first diesel I've ever owned when I've had even the thought of checking GP's. The engine in this thing seems to be worn out (lots of blow by and hard starting), so I want to see if the glow plug system is doing all it can to improve starting. There is an outside chance that nothing short of a miracle and some hard,hard, hard flogging will do the trick. I'm still hoping it's crudded-up rings rather than just simply worn out. Kevin in Hillsboro Oregon 1981 300CD 204K miles, Giesela
Re: [MBZ] 1981 300CD glow plug system
aren't working. However, the glow plug light does come on and it goes out within 5 sec or so. Is it possible for the GP light to go on when the system isn't working? It has the newer style parallel plugs in it. Not in theory, but if _all_ the plugs are dead maybe. You need to get out the meter and start doing some basic checks. The GP relays themselves can fail, too. How's its fuse? -- Jim
Re: [MBZ] 1981 300CD glow plug system
Kevin, Sounds to me like a typical 'optimistic' glow plug timer circuit. Wait another count of ten after the light goes out, and then try cranking. Yes, it is possible for the light to go one when there are problems. The self diagnostic circuit compares current to plug #1 to the rest, and sometimes if only one plug is out it won't be detected. What other symptoms? Very respectfully, /s/ Meade Dillon Charleston SC '87 300TD 287k miles '85 190D 2.2 5 spd 106k miles '85 300TD Euro 5spd 327k miles *sold* -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of kevin kraly Sent: Saturday, May 13, 2006 11:38 AM To: Mercedes mailing list; [EMAIL PROTECTED] Subject: [MBZ] 1981 300CD glow plug system Hello listers! I'm still tinkering with this 1981 300CD, and it appears that the glow plugs aren't working. However, the glow plug light does come on and it goes out within 5 sec or so. Is it possible for the GP light to go on when the system isn't working? It has the newer style parallel plugs in it. Kevin in Hillsboro Oregon 1981 300CD 204K miles, Giesela ___ http://www.striplin.net For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net
Re: [MBZ] 1981 300CD glow plug system
Not usually. 5 seconds seems long for a system on the fritz. Usually the light is the first sign. Why don't you think they work? Did you test them for resistance? Are they under 1 ohm? (the max you would want, about .6 new) Vince Club 123D President http://www.club123d.org If you recieved this e-mail in error or would like stop recieving e-mails from this address, please reply to this message saying so, and you will be removed from our address book. From: "kevin kraly" <[EMAIL PROTECTED]> Reply-To: Mercedes Discussion List <[EMAIL PROTECTED]> To: "Mercedes mailing list" <[EMAIL PROTECTED]>,<[EMAIL PROTECTED]> Subject: [MBZ] 1981 300CD glow plug system Date: Sat, 13 May 2006 08:38:14 -0700 Hello listers! I'm still tinkering with this 1981 300CD, and it appears that the glow plugs aren't working. However, the glow plug light does come on and it goes out within 5 sec or so. Is it possible for the GP light to go on when the system isn't working? It has the newer style parallel plugs in it. Kevin in Hillsboro Oregon 1981 300CD 204K miles, Giesela ___ http://www.striplin.net For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net _ FREE pop-up blocking with the new MSN Toolbar get it now! http://toolbar.msn.click-url.com/go/onm00200415ave/direct/01/
