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Old 11-26-2000, 01:15 PM
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I recently purchased an 85 300D so of course I had to dive in and try to make everything work. Right now I am in the middle of fixing the climate control system but my next project is the injection pump I think. It starts up no problem but it has horrible performance below 3k rpm. I already drained the fuel tank and the fuel filters were recently replaced. I also ran 2 cans of lubro molly diesel purge through there. After the diesel purge cleaned things up a little it started running much better (not great but better) but it was back to its old ways before I was even done with the 2nd can of purge. I haven't tried adj. the timing yet and I will do that but I thought I would go ahead and start picking the brains of the experts on this board (which has been of great help by the way). If trying to adj the timing doesn't work I was going to pull the injection pump and send it to a Bosch shop.


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Old 11-26-2000, 03:01 PM
Wm. Lewallen
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Before you do anything with the injection pump you should check the timing. I use the drip tube method.It is more accurate.Some mechanics use other ways.The timing can be altered by loosening the three nuts on the front of the pump and the one on the bracket that supports the rear of the pump to the block.I'm not sure how much you can alter the timing. It depends on where the bolts are located in the slots.If you have have to remove the pump, you will have a lot of fun. Besides removing all fuel lines, you will have to remove the oil filter housing. You will really have fun doing that. I can send you instruction on how to time the injection pump(drip tube method), if you don't already have them.
Bill Lewallen
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