I drove a few time with the new strater bypass. I'm off the road again, now. 1984 300D - This car aint startin. The starter button works well. I thought changing fuel filter/screen site glass would do the trick. It must be something else. Maybe the little bushings that go on my tranny shift lever might Help. The battery is being trickle charged cause I cranked the life out of it.
Any suggestion? Where is the neutral safty switch located? Is that the wire that was smoking? Right back corner of transmission?
Hey my horn fuse was blown. replacing it didnt fix the problem. What should I check for?

Need year of car. Problem is likely glow plugs. Go to dieselgiant.com and follow his glow plug diagnostic procedures.

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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

Try wiggling gear shift in park or neutral.Check and make sure vaccum valve is not holding fuel on IP,at stopped posistion.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran

I don't see how the Neutral Safety Switch could be the cause of the problem since he says the engine is cranking.

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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

Drop us some more info (ie year). If it's a w123, it's either a fuel problem, or glow plugs. Not much else. Please chime in with year of car.

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1989 300E 144K

Its a 1984 300 d.Yes I overlooked turning engine.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran

123 84' 300D. I replaced the diesel filter and the screen fltr. Fuel is redy to go. (No bubbles) Filled fuel filter w/ power steering fluid. Gonna check ground straps. Neutral safty switch, where ever that is? Glow plug light is only on for 5 seconds. Before cleaning battery terminals it was never on. Plugs arent old.

How? Whats that?

No need to bother with the ground strap or Nss if the engine is turning over. You have a glow plug problem.

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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

I bypassed the starter and have push button mounted to the kickplate inside the car.

You might be right. I'll check out dieselgiant. If the relay is bad, is there a way to bypass it? My friend said Pepboys has a relay that would work.

I caught that. If the engine is turning over, neither a bad NSS or a bad ground strap will cause a no start condition.

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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

You could temporarily hot wire the plugs directly by putting 5 pieces of copper wire into the plug harness after unplugging it at the rrelay and then twisting all 5 pieces together and jumping it to the battery.
You could also have bad plugs.

__________________
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

Crack the injector lines to make sure fuel is getting to the injectors, but it sounds like a glowplug problem. How's compression?

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1983 240D 3.0T 4-speed manual, now sold

1989 Subaru GL Wagon 5-speed Touring Edition

Kerry, I'll try that thanks.
JEB I dont have any tech tools to check compresson. One thing that happend on the boat was my wife pulled the shut off knob and forgot to push it back in again. On my car every time I shut off I pull a stiff bailing wire tied to the stop lever. That seems to not be the problem tho.