BenzWorld Senior Member
Date registered: Jun 2004
Mentioned: 0 Post(s)
Quoted: 17 Post(s)
First, do not use the fuel in the tank. Drain it using the plug in the bottom.
What I do in starting a vehicle sitting for a long time is disconnect the inlet and outlet fuel lines from the engine. This takes the tank and lines out of the equation. For the 190D, disconnect from the lines that run along the frame rail. Get some fuel line and connect to the engine suction and return ports where you disconnected the lines and stick them in a small fuel can. Unscrew the primer pump located on top of the delivery pump on the side of the main injection pump. Pump till fresh fuel and no air comes out of the return line. Screw down the primer pump.
Check the oil and water levels. I like to see if it runs before changing oil. Get a good big battery, as the faster it turns the better. Turn the key on then pull the large knob next to the key. The first stop when you let go is the RUN position. Then pull till you feel another stop. There will be tension on the knob and you have to hold it. This is the GLOW position. Hold until the resistor in the salt shaker cap on the left side of the dash glows red. Then pull the larger knob all the way out to engage the starter and press on the foot feed. When it starts, let go of the large knob and it will return to the RUN position. You can hold the knob in the GLOW position until the engine hits on all cylinders. To shut off the engine, push the larger knob all the way in and turn the key off. Note, sometimes pushing in the knob may not shut of the engine. This is because the rubber mounts attaching the cable to the injection pump rot off. In this case, open the hood and push the lever manually forward to shut the engine off. There is a knob on the left side of the dash next to the resistor that is the idle control. Turning raises and lowers the idle, and is better done with the foot feed slightly pressed. When cold, the idle needs to be turned up.
For oil, use SAE30 diesel engine oil in the engine, air cleaner, and injection pump. The injection pump must be filled separately through the larger screw-off cap at the top rear, until it reaches the check plug hole on the side of the pump, half-way up near the rear. The oil filter is the same as the early 1950’s Ford flathead V8 engine, though the Ford filter does not include the canister sealing o-ring that Mercedes uses.