Hey guys,


So I got some rebuilt injectors from a reputable member on this site, they looked brand new. I got them for my 1984 300D turbo diesel. I pulled the old injectors and did an MMO soak in the cylinders for a week.

Today, was the end of the week on that. I put a new clear filter on which I used the hand pump to fill up. I also replaced the canister filter, which I filled with diesel. It wasn't quite topped off, but it was close.


I then installed the new injectors with new heat shields. Once I had them all torqued to about 59 ft/lbs, I ran the new return lines. I just ran them based on the two nozzles that were closest together, is this correct or is there a designated way to hook that up?

After that I re-attached the fuel rails and left the #1 open. I had my friend crank it until I saw fuel come out of it. Then I hopped in the driver seat and tried to start it. It turned over for a couple sec, and it turned on, and kinda sputtered. I gave it some throttle to keep it alive, but it still stalled out after maybe 5-7 sec. I started it back up and got the same thing but for like 4-5sec, and then again for just a couple sec. I went through and cracked each injector and had my friend turn it over. I feel like I would see very little drips which I thought was the fuel coming through, but I'm not sure. I haven't bleed the fuel system on this in forever and cant remember how much should come out of each fuel rail.

After I did that, I made sure all of the vacuum lines were still hooked up and tried turning it over again. Strong turn over, but no start. I decided to let the starter cool and come talk to you guys.

Questions: When I first cranked it over before re-installing the injectors, all of the cylinders smoked from what I assume was the glow plugs burning off the excess MMO, could this have ruined any glow plugs?

Do the return lines between injectors indeed hook up just based on which of the nozzles are closest together?

About how much fuel should come out of the line when bleeding the lines? Like a notable amount, or just a drip every few turns?

Could the MMO soak have ruined anything? I used less then half a quart. about 1/4 cup poured into each cylinder via funnel, and made sure to get the excess out before re-installing the injectors.

What else should I check?


Thanks guys!

-Tony

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1984 Mercedes-Benz 300D