What's the most likely sequence of things to check on a non-starting diesel? It was running and then quit (300TD). It has been sitting for a while (2-3 months). I replaced the fuel filters and the pump primer. It turns over but doesn't fire. What should I check next?

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" We have nothing to fear but the main stream media itself . . . ."- Adapted from Franklin D Roosevelt for the 21st century

OBK #55

1998 Lincoln Continental - Sold
Max 1984 300TD 285,000 miles - Sold
The Dee8gonator 1987 560SEC 196,000 miles - Sold
Orgasmatron - 2006 CLS500 90,000 miles
2002 C320 Wagon 122,000 miles
2016 AMG GTS 12,000 miles

90% of MB diesel no-start conditions are caused by malfunctioning glow plugs. Troubleshoot the plugs, you can use dieselgiant's troubleshooting 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

yeah - what kerry said - you can test the glows with a ohmmeter

air/fuel/compression and glow - if they're all available you should go

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'95 E300D ("Tank") - 231,000 miles
'79 240D ("Biscuit") - 197,250 miles (Sold)
'83 240D ("Ding-Ding") - 217,000 miles (Death by deer)
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"Back off, man. I’m a scientist” ~ Peter Venkman

Can you elaborate?

Was it running...........then quit.............then would not restart hot?

If so, you can rule out the glow plugs as your problem.

Got fuel in the tank.........??

In your case Glow Plug probem or not after sitting a long time a tiny Air leak could cause the Fuel to migrate back towards the Fuel Tank ad a after changing the Filters I would suspect that all the Air was not bleed out of the system and the Air is not trapped between the Fuel Injection Pump and the Injectors in the Injector Hard lines.

I would loosen all of the Injector Hard Line Nuts and after the Battery is recharged Crank the Engine until Fuel comes out from under them. Tighten them and attempt to start.

Loosening the Fuel Injection Line Nuts also helps to verify why you are not starting. If you are getting Fuel to the Injectors and still not starting you can suspect somethine else like the Glow Plugs.

If you are not getting Fuel to the Injectors like you did changing the Fuel Filters look for a Fuel Supply problem; anothe possible is the Fuel Tank Screen being restricted.

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84 300D, 82 Volvo 244Gl Diesel

Thanks for your input. I'll try these things and see what happens.

__________________
" We have nothing to fear but the main stream media itself . . . ."- Adapted from Franklin D Roosevelt for the 21st century

OBK #55

1998 Lincoln Continental - Sold
Max 1984 300TD 285,000 miles - Sold
The Dee8gonator 1987 560SEC 196,000 miles - Sold
Orgasmatron - 2006 CLS500 90,000 miles
2002 C320 Wagon 122,000 miles
2016 AMG GTS 12,000 miles