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Old 12-12-2001, 04:31 PM
cscmc1's Avatar
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Smile 220D -- hand primer location???

OK, here's a REALLY embarrasing question... where the heck is the hand primer pump on a 71 220D? I am going to look one over this evening, and thought I might try starting it if I can find the darned pump! (The car has sat and sat, so I doubt it will start w/o being pumped... if it'll start at all).

I don't imagine the pump is the little foot operated thing above and to the left of the brake pedal, is it? That would kind of negate the whole "Hand" pump thing if it were foot operated. 8^)

Thanks in advance,

Chris
cscmc1@eiu.edu

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Old 12-12-2001, 05:01 PM
Bill_Greenwood
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I'm about as new to MB's as you are, but I believe it should be located on the diesel injection pump on the driver's side of the engine block. It should be a small plastic knob that unscrews to unlock the pumping mechanism. Then it is pumped--I understand about 200 times (eat your Wheaties first!).

I think you should probably also crack open a nut on the injector line just above one of the injectors to guage progress. I believe you pump until no more bubbling occurs.

Good luck and I hope this is correct.
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Old 12-12-2001, 09:00 PM
fryerpowered
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Nope that's the windshield washer!

The hand pump, I may be wrong here but I believe it's in the same place as it is on my W115 chassis. If it's not on the injection pump as the previous post suggested then try looking at the FUEL FILTER. It will not be the "cylinder" shaped pump like on the W123 series. It will be more of a saucer shape. Mine has a black pump and a metal base. It is mounted on the drivers side of the engine compartment near the front of the engine and it is attached to the filter housing. It has a line coming to it from the Injection pump. Hope this helps! Tom

BTW, I had trouble finding mine too as the plastic "top" piece that you "pump" was MISSING. That's right it was broke right off!
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Old 12-13-2001, 09:42 PM
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Location: Evansville, Indiana
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Chris:

Hand pump is on the back bottom corner of the injection pump, deep down beside the power steering box. Expect to get dirty.

Some hints for starting an old W115:

Fuel lines go bad and allow air in -- this prevents the car from starting. Check the suction line -- I had to replace mine, also the one on my brother's 75 300D.

Priming pump may be bad -- the old type looses its' lower cup and pull fuel out of the tank, but dumps it all over your hand rather than pushing it into the filter.

Bleed fuel filter and IP before trying to start.

Make sure glowplugs work (the glow indicator in the dash must get orange hot before you crank)

You must have a good, fully charged battery -- I suggest the group 49 monster these things are supposed to have -- don't use a "standard" one -- the hood won't close. I have a dent in mine!

More help if you need it!

Peter

__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!
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