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  #16  
Old 01-13-2007, 12:38 PM
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Join Date: Jan 2002
Posts: 18,350
Quote:
Originally Posted by yellit View Post
..

I have my own kit on my 1978 300D...works fantastic...I can shoot some pics if that will help.....It cranks so fast it is scary!....
78 is a 123. His is a 115.

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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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  #17  
Old 01-13-2007, 01:33 PM
KylePavao's Avatar
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Join Date: Jan 2005
Location: Tiverton Rhode Island/University of Rhode Island
Posts: 400
Blech

After being up all bloody night, I said screw it. If it aint broke, don't fix it. I seems like the relay in the W115 cars can only provide enough current to power three plugs. After that, nothing. All the new plugs work, but they just don't get enough current to turn on reliably. I put in the old loop plugs, and it works fine. Screw it. They seemed to be operating ok, but very flaky..not consistent. I'd rather have a long wait and a start than no start at all. Thanks for your help guys.
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1976 300D
190,000 Miles
Colorado Beige

1975 300D
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  #18  
Old 01-13-2007, 02:14 PM
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Join Date: May 2004
Location: Flowood Mississippi
Posts: 438
Glow Plugs....

I do not know what comes with the DG kit but I used a big truck starter relay that can hold a constant current of 100 amps ....I thought the kits came with a new relay.....
I have a big fused wire from the battery feeding it, and a push button to energize the relay.....
I also put some fuses in for safety....this will work on the 115 or the 123 or any older diesel.....
I always go with bigger wire and components to avoid resistive heating problems....that is why I use a seperate wire for each glow plug...
With low voltage DC current bigger is better.....
It is aggravating to run into this trouble after spending the bucks....
I do not know what the kit is comprised of....
The plugs only cost about 14 bucks each and the wire is maybe 5 dollars.....
If a new relay does not come with the kit...the extra 40 dollars could be used to buy one heck of a relay...
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1978 Yellow 300D (The Mustard Toad)
1980 Blue 240D (The Iron Toad)
1989 Grey Mitsu.4WD Mighty Max Pickup (Needs a Diesel transplant bad)

(Open the pod bay doors HAL)
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  #19  
Old 01-13-2007, 02:20 PM
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Join Date: Jan 2002
Posts: 18,350
I didn't do anything to the relay on my 77 300d. Just replaced the plugs, removed the ground, hooked the first plug to the wire that attached to the old plugs and used the new jumper wires to go from plug to plug. It's worked fine for 2 or 3 years now, although the light is timed to the series plugs and not the parallel plugs so they stay on longer than necessary in order to start it.
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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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  #20  
Old 01-13-2007, 02:50 PM
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Join Date: May 2004
Location: Flowood Mississippi
Posts: 438
Glow plugs

Yes ..I think that is the problem...My old relay for the series plugs could not hold the new current levels so I went with the new relay for the extra current capacity....You could buy a couple of those old Ford type fender-mount starter relays for a few bucks each at any parts store and use them instead...2 plugs for each relay...2 relays distributes the load a bit..
Just use an automotive momentary push button switch to energise them both for about 10 seconds and it will start right up....The difference on my 300D was amazing....
Plus you can hold the switch in for a bit if you want to glow extra after starting to help the warm up.....Total manual control....great....
I am thinking of doing this to my 240D just for the extra control....
Since you already have the plugs...you just need the relays and push button switch...about 20 bucks or so...
I know those slow start problems are terrible....they really tested my internal rage levels....

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1978 Yellow 300D (The Mustard Toad)
1980 Blue 240D (The Iron Toad)
1989 Grey Mitsu.4WD Mighty Max Pickup (Needs a Diesel transplant bad)

(Open the pod bay doors HAL)
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