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#16
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You haven't mentioned something that happened on mine: BAD GROUND. The 240D is probably different, but there are two grounds: one goes battery (-) to body, the other is lower body to motor. The lower one gets corroded and you can't see it. I just use a single heavy duty connection from battery to engine and that made the difference. Also: make the engine spin faster by cleaning all electrical connections on starter. I would pull at least one plug and watch it heat up up RED hot. I have found that a lot of MB marginal cars with bad grounds become a lot more dependable when the gound issue is fixed. It's the weak point on older cars. Just my 2 cents, but good luck.
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Strelnik Invest in America: Buy a Congressman! 1950 170SD 1951 Citroen 11BN 1953 Citroen 11BNF limo 1953 220a project 1959 180D 1960 190D 1960 Borgward Isabella TS 2dr 1983 240D daily driver 1983 380SL 1990 350SDL daily driver alt 3 x Citroen DS21M, down from 5 3 x Citroen 2CV, down from 6 |
#17
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Quote:
have check glow plugs both voltage and ohms a second time this morning |
#18
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Quote:
will check the smoke **should i pull the injectors and get them tested? would the car still run normally after warming up if the injectors are bad? i will call some garages first thing in the morning. just the thought of not messing with those two bolts is making me relax. also will check my ground connections thanks to all for suggestion |
#19
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A diesel will run on cat poop once you get it started, so yes it will run "OK" once warm even if the injectors are bad. Testing is probably as much as replacement, they sell new ones here and I sell new ones.
Removing the starter is no a big deal but the best way to test it is on the car. You need to find out if lowcompression is your issue.
__________________
****************************** 1971 Porsche 911 Targa RSR rep. 1968 BMW R60/2 1981 BMW R80GS-PD, dual plugs, 1000cc jugs, 10 gal "Gaston" tank. 1982 BMW R80GS-PD, duplicate of above. 1988 Neoplan/Mercedes 40' Bus 2002 SLK32 AMG 2013 Smart Electric |
#20
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how hot are the glow plugs supposed to get? should they be litterally "red" hot?
i pulled out my #1 injector and fired up the glow plugs for a full cycle(~30 sec till i herd the relay click off) , stuck my finger down there. seemed warm. so i fired them up for another full cycle. it definately wasn't "red" hot but i was dumb enough to stick my pinky down there and get burnt, it definately got hot. so should it have turned red after 1-2 full cycles? called my repair shop they wont/cant test the starter, guess i'll head over to the "good MB shops" forum to try and find someone in d.c. metro area. |
#21
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Good glow plugs glow bright red when they are powered. Even a dull red glow is not good.
__________________
1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13 |
#22
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Good glow plugs glow bright red when they are powered. Even a dull red glow is not good.
Removing the starter is not a big deal.
__________________
1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13 |
#23
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Quote:
I would put 12 volts directly to the glow plug and see if the result differs from when they are wired through the normal electrical system.
__________________
1998 E320 150,000 1980 300SD 240,000 1965 190D 79,000 |
#24
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To eliminate ground issues for the weak glowing glow plugs. Take a jumper cable from the negative terminal of the battery to a good connection on the engine and watch that glow plug again.
Or if the injector is already back in read the plug voltage with the jumper and without it. A weak ground will be indicated by a higher voltage at the glow plugs with the temporary additional ground. At the same time try your starter with the temporary additional ground. Is it noticeably faster turning? Make sure your connections with a temporary jumper are really sound at both ends. |
#25
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removed all of my ground straps and cleaned/sanded the connections. Removed the braided engine to frame strap and cleaned it out.
tried starting the car. no dice. ok so i decided to test my OLD glow plugs (i should have looked up this info, tested my glow plugs and THEN order new ones if i needed them but instead i just figured i would throw money at it and everything would be fine. of course that didn't work) all of the old glow plugs ohmed fine and then i decided to hook them up with some wire straight to my battery and sure enough each one of them turned bright red at the tips. (guess i didn't need new glow plugs) with the #1 injector out i removed the new glow plug that wasnt heating up bright red and put in one of the old ones i had just tested. sure enough it turned bright red. so i pulled all of the new glow plugs and put the old ones that i know are working correctly back in. i tried to start the car but it cranked over slower then i have ever heard before, but i figured that after all of this glowing and cranking with out ever getting the car running to charge the battery the battery was probably way low. voltmeter put the battery at 11.6 V so i put my battery charger on it. ~6-8 hours later the battery charger said the battery was charged. volt meter said 13.3 V. moment of truth: charged battery and the car had been sitting cold for most of the day. Sure enough she started up with no problems! shut her down and check the battery 12.87 V. Next morning woke up checked the battery again thinking i might have a fault somewhere draining my battery overnight. 12.96 no fault i guess. Started up the car with no trouble at all! At this point i intend to run it around town for a couple days making sure nothing else presents it's self but then it's the open road for us! (by the way i tested the glow plug that was in #1 and wouldnt heat up enoguh. when i did, the base (not the tip) started glowing bright red for a second then it BURST IN FLAMES!!! not joking. wtf is up with that?!?!?) thanks for all the help everyone wish me luck/tell me what you think |
#26
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Homeboyjohn,
Glad you got her running. And I learned something from this thread as well. Ground straps. I'll be checking those on my car.
__________________
Codifex 1981 240D ChinaBlue (Got her running with a donor engine.) 1983 300DTurbo w/sunroof. 1984 300TD manual sunroof. (Electrical Gremlins) |
#27
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I learned something else. New glow plugs can be crap.
__________________
1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13 |
#28
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Quote:
What was the brand of your new GPs that were supposedly bad?
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1998 E320 150,000 1980 300SD 240,000 1965 190D 79,000 |
#29
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Now that you've gotten the battery fully charged, it might be time to check your charging system - so you keep that battery charged!
The glow plug burst into flames? Wow...was it an autolite?
__________________
1982 240D, sold 9/17/2008 1987 300D TurboW124.133 - 603.960, 722.317 - Smoke Silver Metallic / Medium Red (702/177), acquired 8/15/2009 262,715 and counting |
#30
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glow plugs were bosch. only tested 2 of them so far. (1 burst into flame the other was good )
checked my voltage with the car running 14.3~14.5. seems good. been checking my battery after shut down at night and again in the morning before i start her back up. two nights ago it was 13 at night then 12.87 in the morning. last night it was 12.85 and 12.81 this morning. i was doing alot of short runs these last 2 days so alot of starting not alot of miles. seems to be good. planning on not starting her today to see how she acts after sitting for 2 days. new problem (but not as major) the latch i pull to relase the hood. (latch inside the car) has snapped off. looks like it could be replaceable (with out welding) from looking at it but has anyone else had experience with this? |
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