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  #1  
Old 03-18-2009, 08:27 PM
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Join Date: Feb 2002
Location: Big Island- Hawaii
Posts: 106
1979 300D Updated Pencil Glow Plugs- No light/Won't Start...?

Aloha, I replace the old loop style GPs following DieselGiants tutorial several years ago. I put in the updated pencil style and haven't had an issue.

Currently the car won't start. I checked the plugs and all read .652 resistance which according to most is perfectly fine. I checked for power pre and post strip fuse and at each glowplug connection at the engine. All are getting power of 11.5v or so.

I am about to pull some of the plugs to check them manually. Is there anything else that I should consider. I thought about the relay under the dash but considered this probably not to be the issue as the plugs are getting power.

Thanks and any thoughts are welcome.
Will
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Thanks,
Will

1985 300D- 222k- (bad transmission)
1980 300D- (parts car)
1982 300SD- 242k
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  #2  
Old 03-18-2009, 08:46 PM
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Join Date: Jan 2002
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Odd. If they're getting power I'd look for a fuel problem or a compression problem, although the fact that the glowplug light is not functioning seems unusual.
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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
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  #3  
Old 03-18-2009, 08:52 PM
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Join Date: Feb 2002
Location: Big Island- Hawaii
Posts: 106
Update

Well, I got one out and even though it was reading .652 resistance it doesn't work. So I'll pull the rest and replace them.
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Thanks,
Will

1985 300D- 222k- (bad transmission)
1980 300D- (parts car)
1982 300SD- 242k
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  #4  
Old 03-18-2009, 11:41 PM
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Join Date: Jul 2007
Location: USA
Posts: 2,156
check your GP relay
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1986 300SDL, 211K,Dealership serviced its whole life
1991 190E 2.6(120k)
1983 300D(300k)
1977 300D(211k)
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