BENZ AID - COMMON QUESTIONS AND ANSWERS

leave WVO in loop mode?

I'm in my 3rd year of running WVO trouble free in my 82 240 using your single tank system with boost pump except for a couple of self inflected problems ( dewatering). I up my mix of diesel in the colder months and run 100% diesel in December, January and February turning off the glow plug heater. Last year I left the system in the loop mode with no side effect thinking the loop will aid in minimizing gelling. I'm in to the same cycle this year . Any downside to looping straight diesel in cold weather?

thanks,

Fred

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1984 300D injection pump trouble? please advise

I have a 300D with 250k. recently the car wouldn't start or try to fire up at all until you shut the switch and try a second time and it fires right up. this is a recurring problem but it will always fire right up on the second try. The fuel lines have been replaced a few months ago all the way to the tank and there are no fuel leaks anywhere so I figured the lift pump might be loosing its prime and I tried a little experiment. Before starting up in the morning I used the hand primer pump about 10 strokes and she fired right up first try.

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altenator

1933 300D altnator not charging Instaled a new altnator with new voltage relator. Still not charging. What is the little plug with 3 wires coming into a plug and 1 wire pluging into the altnator? Can and should this be replaced/ Wher can I get this box ?

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light problem 300 D

87 300D

Yesterday my light went funny. The light monitor on the dash came on and the right side parking lights and the dash lights quit working. I pulled tested and changed front and rear bulbs but no change. Went to the fuse box and checked all the fuses with a test light. Located what i think is the light monitor unit right behind the fuse box. all seemed ok. Where do I go now. I'm lost.
Thanks Mike

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1983 300SD sudden "ticking" from engine

About two months after replacing the vacuum pump, a sharp "ticking" sound started that seemed to come from the front of the engine, and that varied directly with the engine speed. Checking the power steering pump reservoir revealed it was about half full. I added fluid but the ticking was still there.

The next thing I did was to adjust the valves. While turning the engine by hand for this procedure, I noticed a sharp-but-hollow sounding "pop" coming up from deep inside the engine at the timing chain. The sound occurred at what seemed to be every complete revolution of the engine. It may have been every half-revolution, but in any case, the "popping" was occurring at consistent points in the rotation of the engine. I know the vacuum pump opens up into the crankcase...

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