I am wondering if my fuel lines have started falling apart after using WVO in my 81 Mercedes 300SD. I completely drained the fuel tank of WVO, I used a solvent to rinse the tank out. I cleaned the reuseable fuel filter (spectra brand) and drove the car 35 miles and the filter is slap FULL of black particles again. The only thing I can attribute this to the fuel lines possibly having reacted to the WVO and started coming apart. I can't see for the life of me how there could possible be this much debris in the tank, there wasn't that much debris that came out the tank when I flushed it with the solvent. So the 10 million dollar question is where is this debris coming from? I know I have read on this forum before about people talking about WVO drying out fuel lines. I am wondering if tis is the case here. HELP GUYS! Hoagie
The "drying" out of the fuel lines I believe is referring to the cloth on the outside of the fuel line that is sometimes wet from diesel fuel weeping through it. I think the glycerin has the effect of impregnating the rubber and sealing it so that the cloth becomes dry-- I don't think that it is the black rubber particles you are seeing. My guess is that the veggie oil and maybe some of the solvents you used are having a cleaning effect on the engine and you are getting the blackness back through the return fuel lines-- I had this effect temporarily after using "diesel purge". It cleaned itself up after running it a while.
I think you should try running "diesel purge" to really clean out your injectors. You can get it through the Mercedes source website with good instructions for the DIY'r.
DON'T put diesel purge in your tank-- follow the instructions,since it is meant to be run straight through your injectors without any dilution to really clean them out.
hey hogie, i get those little black particals in my mercedes fuel too, i think it is in the veggie oil, i see that stuff getting thru the greasel sock filters, even brand new ones, i'am tired of paying 6.00 each for those mercedes metal can fuel filters, i ordered a RACOR 500FG i think this filter with a 2 micron filter in it will solve my probley, i have replaced that metal mercedes filter over a dozen times in the past year, i prefilter and filter with greasel sock filters
i'am running my 85 mercedes 300d turbo on used veggie oil,in the main fuel tank,hot enough in fla. NO-KIT-NEEDED, 100percent veggie, cold starts down to 40 degrees... also just bought 81 ih full sized school bus 9 liter diesel runs on 50/50 veggie mix no
the problem you are describing is common especially on Mercedes SVO-drivers in Germany. What mostly happens is that the SVO soak off all the pollution diesel fuel has been creating in the tank and fuel hoses in the last 10 or 20 years.
The first thing to do is to clean the tank, mechanically and perhaps with biodiesel, as biodiesel soaks off the pollution even better than SVO.
If your hoses are the problem, you should replace them by transparent polyamide-hoses with an intern diameter of .4 inch or more.
If all this does not help and your filtered your SVO well, you may have what we call the "diesel plague". Its common in boats and happens when diesel or SVO and water come together under certain circumstances (its a bacterial problem). In this case you can get a chemical from a boat store for this, called Grotamar, don't know if its the same name in US.
Greetings from Germany,
Mercedes Benz MB 100 at this time 100% SVO without modifications.
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