bass885

Hi all. recently installed a 200tdi in my 90 and on starting always (hot or cold) blasts out a good cloud of black smoke. When running seems fine and otherwise ok. I have not wired up the glow plugs and was wondering if this would solve the problem? I have read the article on tuning the 200tdi and have tried adjusting in the screw on the top of the diaphragm but this makes no difference, the pip on the diaphragm is at the 12 o'clock position. Any comments? Thanks.

Hi, the resistor on my 90 was right at the back of the wiring behind the speedo and looked like a fuse but had windings on the outside. Regards

Just to clarify I have left the resistor in and added a diode in the charge light wire so is wired up as in the manual for the later Defenders. It is possible that I am just correcting it for another fault that i have not found yet. Lets see how it goes!

Ok I have now sorted the problem. I found the resistor in the ignition light wiring (which looks like a special fuse in a fuse holder) and sure enough with that removed it turns off ok. I have now put a diode in the ignition light feed from the alternator as it has in my Haynes wiring diagram for the 1991-on defenders and all is now fine. I can only assume there is a back feed from the ignition light which was giving the 2v to the solenoid. Any comments?

Thanks for your comments, I have checked the connections on the plug and for shorts, nothing as yet but will post it when i find it. That is no ordinary cow, she is a L.R specialist particularly in the removing of Defender rubber wheelarches (she has yet to put one back on though!).

I have just replaced the 2.5td 19J in my 1988 90 with a 200tdi and when the ignition is turned off it carries on running. Sure enough when the pump stop solenoid wire is removed it stops. When the engine is running with the ignition off the solenoid is still getting 2.2 volts to it, also if the alternator is disconnected it will turn off ok from the ign key (0 volts at solenoid). I have checked earths and connections and all appear to be ok. Previously this trouble did not occur with the 19J unit (perhaps the solenoid needed more than 2.2v to stay on?). I am thinking that there must be some sort of back feed through the charging light, I also notice that according to a haynes wiring diagram for 91-on defenders there is a diode in the charging light circuit (external from alternator) and yet this does not appear on the earlier diagram for the 90's. Any comments would be appreciated. Thanks