Quote:
Originally Posted by Gauge
I called Ditmire Motor Works which are Mercedes Diesel Specialists not far from where I live and I told them my situation and given the fact that Diesel Purge did not help me at all, I suspect my timing might be off. They said the timing on these engines almost never needs to be adjusted during the life of the engine. He was certain that one or possibly all of my injectors are dirty and need to be cleaned - which I thought the Diesel Purge would have done for me, but it looks like I need to tear into the injectors now. Can I clean these things, or is it better to buy new ones?
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I've never seen IP timing affect idle quality. Engines that are 12 degrees late seem to idle just fine.
I'd agree with the mechanics..........the condition of one, or more than one injector is probably your issue. You can clean them with specialized knowledge and specialized tools...........neither of which I possess.
Try to isolate the bad injector by cracking the injector lines one at a time. Either the idle will get noticeably worse..........or it won't. If it doesn't.........that's your suspect injector. For further confirmation, swap that injector with the adjacent injector. Now do the procedure again and see if the problem follows the injector to the next cylinder. If so, you've nailed the issue. Replace the injector and you're done.