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#1
04-01-2014, 04:53 PM
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1987 190D won't start
Car wasn't shutting off so we used the Stop lever on the side of the fuel pump with a screwdriver to shut off the engine after turning off the ignition / key.
This worked until today when the car failed to start and while cranking the engine we heard a buzzing sound from the area of the vacuum shut off unit atop the fuel pump. Engine turned over but would not fire up. Juice in the battery and plenty of fuel. 
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#2
04-01-2014, 04:57 PM
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what position is the stop lever in?
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!!  1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#3
04-01-2014, 05:03 PM
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up, as when the engine is running
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#4
04-02-2014, 07:18 AM
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The stop lever appeared to be working, dropping down when the key was turned off, then further depressed with a screwdriver to kill the engine.
Did the same thing yesterday, conducted our business and went to restart the car and with the engine turning over but failing to "fire". We heard the buzzing sound from the fuel pump area each time we engaged the ignition key. Anyone with similar experience?
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#5
04-02-2014, 12:13 PM
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So, seems to me the shut off valve is shot, why not just replace it? Then the car will start and shut off correctly.
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1983 W123 300TD US spec Turbo engine, with Euro bumpers and manual climate control, and manual transmission.
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#6
04-02-2014, 06:46 PM
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Thanks.
Will a defective shut off valve prevent starting the car?
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#7
04-02-2014, 08:50 PM
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I don't think it will hurt, and in the process you'd deal with the linkage too, lube up every joint on that, something's clearly stuck, telling the engine to keep the fuel shut off.
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1983 W123 300TD US spec Turbo engine, with Euro bumpers and manual climate control, and manual transmission. Last edited by crazy4diesel; 04-03-2014 at 09:29 PM.
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#8
04-03-2014, 12:48 PM
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Buzzing could be faulty pre-glow relay? No glow plugs glowing, no engine starting? Do you smell raw diesel fuel in the exhaust while cranking? You could also crack open one of the injection hard lines to see if fuel weeps out while cranking.
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Respectfully, /s/ M. Dillon '87 124.193 (300TD) "White Whale", ~392k miles, 3.5l IP fitted '95 124.131 (E300) "Sapphire", 380k miles '73 Balboa 20 "Sanctification" Charleston SC
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