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#1
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Anybody had any experience with
algae in the fuel lines/tank? My prefilter stops up within a few weeks with little black flakes. I'm sure this is diesel algae. So, i have to change the filters pretty often. Even when i change the filters and prime the fuel, more black flakes suck right up into the filter as I pump it. I'm also having trouble with rough idling on and off. (not consistent) I'm wondering if the idling problem could be related to the algae? Any experiences in this line? or what it will take to get rid of this stuff? Thanks |
#2
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You could try shock treating the fuel with a product from Biobor called "Diesel Doctor" and see if that kills the algea. You will need to replace the filters, and likely the fuel tank strainer afterwards. If the infestation is profound, a shop should drain and clean the tank. But try the Diesel Doctor first. Diesel Doctor is probably available from PartsShop, and comes in something resembling a toothpaste tube. Caution, even inside the sealed tube, the product smells like a graveyard of rotting bodies. :0 It gets even worse after you twist open the cap. I had a modest algea problem with my car, and it solved the problem. Good luck, and don't forget to put a clothspin on your nose.
Regards - Luke Saint Helena, CA ------------------ '78 300D |
#3
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Thanks for the info Luke. I'll get the diesel dr.
Did you have any engine performance problems because of the algae? Where is the tank screen? How many miles on your 78? Mines an 81 300d with 240 k miles. Runs like a top, just takes 'spells' idling rough and missing. Does fine tho when on the road. I'm thinking it may not be getting enough fuel. |
#4
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The tank screen is a filter that is in the bottom of the tank..To check it you will need to run the car almost out of fuel. Then take out the plug (also the screen and the rest of the fuel, and algae will drain. Replace the screen and the prefilter and drive away...We sell all of this including the shock you need. Look in partsshop.
------------------ Benzmac: Donnie Drummonds 1981 280GE SWB 1987 16V ASE CERTIFIED MASTER AUTO TECHNICIAN SERVICE MANAGER FOR 14 BAY FACILITY MERCEDES SPECIALIST 8 YRS PARTNER IN MERCEDESSHOP.COM |
#5
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Phil,
Are the "flakes" soft and slimey? -- well I guess anything soaked in diesel qualifies as slimy. But algae would be more soft and flexible than say rust or general crud. My experience with algae is sooner or later you have to deal with it, and it seems sort of like slime clogging the filter. Do as Benzmac suggests, and see if at least some of the flakes in the drained residue sink quickly to the bottom of a glass. If so its not all algae. Could something have hit the bottom of your tank recently that could knock sediments loose? Is your tank metal? Rust? If so, I have no idea what you do. Hope its just algae. The stuff I got from PartsShop knocked mine out. ------------------ Roger '75 240D 300000 miles |
#6
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Phill, mine has about 200k on the chassis, with about 15k on a Benz factory rebuild. The previous owner decided to drive the original engine around without any water. Since the engine, injection pump, etc... is new I wanted to get the algea out fast. Kidding aside, do wear some plastic gloves when you use that stuff. It is just foul and stays in your skin no matter how much you wash your hands.
Regards - Luke Phill wrote: How many miles on your 78? ------------------ '78 300D |
#7
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Ok, guys.
I went ahead and changed the prefilter again, took it apart and examined the black flakes in the filter. The black flakes are soft, not hard, they do not sink to the bottom in bowl of water. They float on top. So, must be algae. I will get around to draining the tank asap, change tank screen, and treat with diesel Dr. Thanks for the help! Phill |
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