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#16
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Hmm
Quote:
Warning ALL Diesel Owners http://www.peachparts.com/shopforum/diesel-discussion/309367-warning-all-diesel-owners.html#post2841158 Bad smelling fuel, what to do bad smelling fuel, Gag, gasp, choke .
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ASE Master Mechanic asemastermechanic@juno.com Prototype R&D/testing: Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician. Noise Vibration and Harshness (NVH). Dynamometer. Heat exchanger durability. HV-A/C Climate Control. Vehicle build. Fleet Durability Technical Quality Auditor. Automotive Technical Writer 1985 300SD 1983 300D 1984 190D 2003 Volvo V70 2002 Honda Civic https://www.boldegoist.com/ |
#17
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Switched out my clear filter, primed it, and started up the engine. Seems to be running better but not at 100% yet. I'll try pouring in some StarTron and switch out my spin-on filter as well to see if that helps.
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1983 240D, 272K+ miles (odo broke) |
#18
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Update: just changing the clear filter didn't change anything. Dumped half a bottle of Diesel Kleen into the tank, seems to make a tiny bit of difference. Can't find the diesel version of StarTron for the life of me, and the marine places are closed for the holiday weekend so I can't try there. Bah. Clear filter is dirty again but at least is less black than the old one was. Have not changed the spin-on filter yet.
I'm reading about this trick where you add a bit of 2-stroke oil to the tank, but which kind to use?
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1983 240D, 272K+ miles (odo broke) |
#19
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Startron and other makes of Biocide are most often found at Stores that sell stuff for Boating and sell Stuff for the Big Rig Diesels.
When I did a Autozone Search for Starton it showed up at only one of 5 Stores. And, it was a store close to the Harbor. Also Startron makes more than one product so you need to be sure you get the correct one. Stuff can grow in the Diesel Fuel and the Startron has an Enzyme that is supposed to break that stuff up small enough that in passes through your Fuel Sysetm without plugging up your Fuel Filter. In practice as the stuff works you still may need to replace Filters.
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84 300D, 82 Volvo 244Gl Diesel |
#20
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I use walmart brand 2-stroke oil.
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83 SD 84 CD |
#21
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Does that do the same job a Biocide does to kill stuff groing in the Fuel System?
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84 300D, 82 Volvo 244Gl Diesel |
#22
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Answer
Quote:
There is no secret, just personal preference on some brands. IMO: For your application there is little variation from cheapest to the most expensive. Much of my supply in the past ten years, has come from auction, estate sale, business closing, friends giving me jugs of personal old stock, etc. Often the cetane rating of the very old oil is higher than current production. .
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ASE Master Mechanic asemastermechanic@juno.com Prototype R&D/testing: Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician. Noise Vibration and Harshness (NVH). Dynamometer. Heat exchanger durability. HV-A/C Climate Control. Vehicle build. Fleet Durability Technical Quality Auditor. Automotive Technical Writer 1985 300SD 1983 300D 1984 190D 2003 Volvo V70 2002 Honda Civic https://www.boldegoist.com/ |
#23
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No, the two stroke oil is a lubricant, not a biocide.
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83 SD 84 CD |
#24
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Answer
Quote:
Today it is rare for me to see random spot check diesel fuel test results above 25 - 29 cetane, and not surprising that many come back 18 - 24 cetane. I never see 40 cetane outside the auto maker or US government certification test laboratories. Warning ALL Diesel Owners http://www.peachparts.com/shopforum/diesel-discussion/309367-warning-all-diesel-owners.html#post2841158 Bad smelling fuel, what to do bad smelling fuel, Gag, gasp, choke Here is need to know education data on biocide for members. Algae/Fungus fixation... Algae/Fungus fixation... - PeachParts Mercedes ShopForum Biobor, what is it, why do I need it??? Biobor, what is it, why do I need it??? - PeachParts Mercedes ShopForum Filters, Fungus, Biocide, etc. Filters, Fungus, Biocide, etc. - PeachParts Mercedes ShopForum Algae Clogged Filter Pic StarTron WORKS ! Algae Clogged Filter Pic StarTron WORKS ! - PeachParts Mercedes ShopForum Diesel filters, no tank strainers please. Diesel filters, no tank strainers please. - PeachParts Mercedes ShopForum Tank Screen .
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ASE Master Mechanic asemastermechanic@juno.com Prototype R&D/testing: Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician. Noise Vibration and Harshness (NVH). Dynamometer. Heat exchanger durability. HV-A/C Climate Control. Vehicle build. Fleet Durability Technical Quality Auditor. Automotive Technical Writer 1985 300SD 1983 300D 1984 190D 2003 Volvo V70 2002 Honda Civic https://www.boldegoist.com/ |
#25
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Quote:
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Respectfully, /s/ M. Dillon '87 124.193 (300TD) "White Whale", ~392k miles, 3.5l IP fitted '95 124.131 (E300) "Sapphire", 380k miles '73 Balboa 20 "Sanctification" Charleston SC |
#26
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Quote:
You need to eliminate the water (their home) to kill the colony. Adding a quart of 93% or higher alcohol to the fuel tank will absorb the water, kill the microbes, and then you get a big mass of dead microbes flowing out of the tank and clogging your filters. Get a few extra filters (both spin-on and clear) and keep the filters and the tools needed to change them (and a few rags and maybe some disposable latex gloves) in the car. Also keep a small container of clean diesel fuel to fill the new spin-on filter prior to installation, which reduces the priming time.
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Respectfully, /s/ M. Dillon '87 124.193 (300TD) "White Whale", ~392k miles, 3.5l IP fitted '95 124.131 (E300) "Sapphire", 380k miles '73 Balboa 20 "Sanctification" Charleston SC |
#27
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Yumeko-chan, advice you're getting here about critters crudding up your system are spot on...
I was experiencing similar symptoms in our '83; fuel starvation became bad enough that car would just plain die on hills, at highway speeds... I wound up dropping/cleaning the tank, replacing the tank screen, both tank hoses, the entire fuel line - which was nearly completely rusted through - etc. Apart from the crud which had accumulated in the tank, the tank screen was nearly completely occluded by 'bio-gunk'. Fuel sending unit wasn't performing reliably either. All in all - though a big, messy job - I feel it was a good investment in maintenance - I'm preparing the car for her next 30 years. Your car is about the same age...
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'83 300 SD '68 Triumph TR 250 - The only car I ever loved more than the Mercedes; who needs electricity, anyway? - Damn, why did I sell it?! '59 Jaguar 3.4 'Le Chat Noir' - Damn, why did I sell it?! It's difficult to make predictions, especially about the future. - Niels Bohr |
#28
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If you have not changed the main fuel filter I would do so.
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#29
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Update on the Pook, the short version:
Things never got better, despite changing out the fuel filters several times and my husband changing the oil. Couldn't even get the car up the hill near my house this morning, so I took it to Salim's Silver Star, which is a place in town that only deals in fixing Mercedes. Left it there and Salim took me home so he could take a look at it. Just got a call a few minutes ago. The exact words from the lady at the desk: "He says the engine is shot." I know no details other than that. I'll know more once I get a chance to go pick it up.
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1983 240D, 272K+ miles (odo broke) |
#30
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If he's telling you the engine is shot, has he backed that up with evidence? IE, compression test, other...?
Fuel tank is terribly gunked up with algae/bacterial flocculants is a much more likely diagnosis to test for, before accepting 'engine is shot'. Drop the tank screen, clean out the tank, be sure fuel lines are clear, etc... My bet is you'll find a tank screen nearly covered in black gunk. Replacement fuel filters will do little to improve this. ALL of your findings are consistent with fuel starvation. You are getting good advice here from others on the thread. I just did the above job - well, last year - and all of the car's symptoms, exactly the same you've described, are gone. Runs like new. Well, as new as a 32-yr old Mercedes diesel can feel. Which is almost as good as new.
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'83 300 SD '68 Triumph TR 250 - The only car I ever loved more than the Mercedes; who needs electricity, anyway? - Damn, why did I sell it?! '59 Jaguar 3.4 'Le Chat Noir' - Damn, why did I sell it?! It's difficult to make predictions, especially about the future. - Niels Bohr |
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