1985 injection pump

[cruisingz]

hi,
i have a 1985 300td turbo, the injection pump has some wires leading to it, can somebody shed me some light what these electrical connections are for....i traced the wires it leads to a black box on the passenger kick panel.....thanx for your help....john

[jhal]

The black box you are referring to is the EGR control module. It uses a rack position sensor in the pump (the wires in question) to determine when to open the valve via the vacuum controls.

[cruisingz]

thanx forthe info.....i bought the 1985 turbo wagon not running. i replaced the glow plug except #3(broken from the inside) and also the glow plug relay. i loosened the injector plug connection and fuel comes out. i also replaced the glow plugs, still no luck, we couldn't make it too start. a little bit of white smoke comes out of the exhaust pipe. we even adjusted the valves, plus we installed a large new battery that we keep fully charged all the time. according to the previous owner, one morning it just wouldn;t start, we did find the air filter totally plugged up- it was very black(light barely goew thru it). any ideas guys?? greatly appreciate any help.. thinking of removing the head, i don't know.....thanx .....john

[SD Blue]

From the comments you made about the air filter, it sounds like no maintenance has been done in quite a while. The nice thing about diesel is it is fuel or air. Since it is cranking good, I would suspect fuel. Changed fuel filters? Checked filter screen? Are you using fresh fuel?