Re: [diesel_mercedes] Fuel Economy Check '84 300CD Slushbox

 

On 11/26/2017 11:31 PM, Nate vwnate1@yahoo.com [diesel_mercedes] wrote:

 

Low fuel lamp on to stay @ 380 miles, made it to 420 miles and used 18 + gallons filling it, fuel mileage dropped to 22.4 MPG but I also flat footed it some (100 + MPH) and swerved like a drunken sailor to loosen up more silt from the bottom of the tank ~ seems to have worked as the paper filter was black again .

Silver bottle Diesel Kleen used .

Demarkis accompanied me to the Propel filling station on PCH at the harbor freeway, helped me change the filter and check the oil before filling the tank .

He was pleased to be allowed to watch for leaks as the clear plastic micronic element filter filled when I re started the engine .

Most of to - day it ran smoothly at hot idle, the various swerving to and fro put an end to that but the lopey idle isn't terrible, just annoying .

I am having similar experience with my 4 cylinder. It was very dirty when I first drove it. It started hard and there was quite a bit of smoke. I was scared that it  had a burnt valve. And, it was noisy. It's improved in stages as I first changed the filters, then ran one type of cleaner after another through it. Now I have consistent good power good starts and the engine sounds a lot more normal at idle.
One other thing I went through was, when I changed the glow plugs to pencil-type, I found one burnt out one and I had a bit of struggle pulling it out. The prechamber must have been very fouled with carbon and it was actually wet. I think that is the cylinder that has had to do most of the cleaning up. almost all of the lope is gone and sometimes it goes away altogether.
I think if I continue to run it and add cleaner with each tankful, it will eventually finish cleaning up. I wonder if the prechamber nozzles were coked up and they are beginning to clear out.

--   Mark L. Bardenwerper, Sr.  Technology...responsibly, thoughtfully

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Posted by: Mark Bardenwerper <citrogsa@charter.net>

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