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  1. ut99dot1

    Cylinder anti carbon treatment requests

    Injectors
  2. ut99dot1

    Cylinder anti carbon treatment requests

    Hi, in about 1 month I'll swap out my engine (1.6IDI), but before doing that I'll try the berryman anti carbon treatment. If there's any requests people want me to do let me know. Here's my plan Before treatment 1) With cold & warmed up engine, document - blowby smoke (at night with flashlight)...
  3. ut99dot1

    Cheap way to clean out WMO even more (using water)

    Not yet =) once I disassemble the engine Ill let you know
  4. ut99dot1

    Air intrusion, fuel filter

    hi, its either a small leak (cracked tube or whatever), also make sure that the metal lines copper gaskets are good and the surfaces are smooth. also likely, if you are using a rotary pump (like bosch), then this pump can suck with a huge amount of pressure. meaning that if theres a clog...
  5. ut99dot1

    Cheap way to clean out WMO even more (using water)

    Hi, the tdi swap is still on-going (rebuilding the engine), but during the x-mas days I've been thinking on how to improve my WMO production. 1) Washing the WMO Black dawg noted the positive effects of it, but there's a problem on what to do with all the contaminated water. -> There's a...
  6. ut99dot1

    WMO Black Diesel - Cetane Number

    probably higher (better than normal diesel) https://www.sciencedirect.com/science/article/pii/S2352484718300362
  7. ut99dot1

    Cheap way to clean out WMO even more (using water)

    Wow nice reading the extensive experience you have with these engines & WMO. Yeah it's been a great learning experience, the ring-sticking issues seems to be the last of them, after having dialed in pretty much everything else (filtration etc etc) haha. I boroscoped the cylinders and they look...
  8. ut99dot1

    Cheap way to clean out WMO even more (using water)

    After running nearly 3 years of WMO, an update: The good: - engine compression is still pristine (same as when I bought it). - the turbo really helps with burning the oil cleanly. People can drive behind me on the highway without cursing - because of the turbo it maintains power a lot better...
  9. ut99dot1

    Cheap way to clean out WMO even more (using water)

    Hey, sorry for the late reply. Hope you are well. For example, salt, sugar. These don't dissolve with oil or gasoline. Same with some leftovers from brake fluid / coolant , etc. It will create a suspension, true, these salts will float in the oil However, if you mix water through it, these...
  10. ut99dot1

    New insight in IDI burning WMO - need high compression or turbo

    I'll see if I can dremel them bigger, nice idea. Got a summer mix running now, 75%wmo25% kerosene. Winter its more or less 50-50. I'll try with RUG next, the manual of the car says I can run up to 30% unleaded. Should thin stuff out nicely. Does it evaporate over time?
  11. ut99dot1

    New insight in IDI burning WMO - need high compression or turbo

    this is the injector, the tip is a small needle which rocks back and forth. Gets carboned / fouled up over time. just alot faster with wmo Here's one from the net, after running it 100k miles +- Mine looked the same after only 10k. The headshields are in the first post.
  12. ut99dot1

    New insight in IDI burning WMO - need high compression or turbo

    Update, the heavy towing stuff didnt work. The car was starting really hard and lots of unburnt diesel smoke (even when running on straight diesel). Heat shields were full again, however it appears to me that they get clogged much faster than before. Pop tested the injectors and they were all...
  13. ut99dot1

    Removing VE-pump anti-tamper cover w/o damaging it?

    I hate this screw, I destroyed many pumps bcuz of it. You can actually turn the screw in 1-2 more turns even with this collar on, lol. I finally found a injector-shop who had some spare screws lying around and took a bunch with me. My guess, if I had to do it would be to clamp it (through a...
  14. ut99dot1

    Polymerisation lube oil

    Check out google images and youtube for "engine oil sludge"; https://en.wikipedia.org/wiki/Oil_sludge more frequent oil changes seem to be the remedy. Assuming you have the 1.9D (the IDI), e.g. AEF or AAZ, 24bar is out of spec, yes, BUT it will run fine. I have a 1.6D, runs and starts with 2...
  15. ut99dot1

    New insight in IDI burning WMO - need high compression or turbo

    thanks for all the inputs, will do! Once the power decrease sets in again, will do that heavy towing, will be interesting in seeing if it clears things up or not =)
  16. ut99dot1

    New insight in IDI burning WMO - need high compression or turbo

    Update, fuel consumption doubled and car started to smoke alot. Pulled the injectors and below the heat shields was a THICK layer of black crud, which I had to chisel it out with a screw driver. In the injection cup some deposit of a yellow like sand, which I removed with brake cleaner. Cycled...
  17. ut99dot1

    New insight in IDI burning WMO - need high compression or turbo

    Some update on this topic. The turbo really helps with burning the oil, ran 100% straight WMO for a long while without any downsides. Great power too. One tip though; you can't crank up the fuel injection amount as high as with normal diesel, the WMO will start throwing out black smoke alot...
  18. ut99dot1

    When to “fully” bleed/vent fuel lines + crank no-start

    hi, once you get it running it should bleed it self automatically. You might need to do a lot of cranking to get the fuel where it's supposed to be, because the starter got to work the injection pump AND the compression. I always use an electrical lift pump, makes the entire procedure alot...
  19. ut99dot1

    Running straight WMO with electric pre-heater instead of 2 tank system

    Didn't install the heater yet, circulation pump got wrecked, waiting on new parts. Car ran perfect on 50-50 diesel/wmo mix. Then added 5gal of straight WMO. Was 20F during the night, didnt start this morning at 30F, even 10min +- cranking. Then 1h later, still 30F, started up immediately...
  20. ut99dot1

    Running straight WMO with electric pre-heater instead of 2 tank system

    I'm back at it, and this time with a more practical approach, with only off the shelf products. Forget all calculations above. Basically, if you let this heater run for 2 to 5 minutes the fuel should be warm enough to cold-start on straight WMO. Best of all less than 50$ total parts; Parts...
  21. ut99dot1

    Finding the limits of my centrifuge and the sweet spot

    Yeah and also consistency between batches, for me its really hit or miss. Some stuff I can almost immediately pour in directly, and other has lots of sludge in it. My brother works in a pharmacy lab and they have some fancy microscopes that can count the particles (& determine their size)...
  22. ut99dot1

    New insight in IDI burning WMO - need high compression or turbo

    Update after installing the turbo. Difference is night & day. The car retains its power regardless of the oil I put in it. Also the smoke is mostly gone, only a slight haze. I've come to the two improvement points : 1. Need to get the fuel to the pump & injected Very thick oil flows very badly...
  23. ut99dot1

    Finding the limits of my centrifuge and the sweet spot

    And then what's "good enough". I have done some calculations and it appears to be if you are down to 2.5 to 5oz of leftovers, per 250 gal tote, for NON commonrail engines. So 3-4 passes, then filter through 5 or 1 micron filter. Probably 1 to 2 passes + filter will be enough as only a fraction...
  24. ut99dot1

    Finding the limits of my centrifuge and the sweet spot

    Hi, Fuel, even from the gas station is never 100% clean. There's always some toleratable limit of amount of junk in there (see my 2nd post if you want to skip the theory). The centrifuge works like this; heavier (large) particles get thrown a little distance (because they are heavy) and get...
  25. ut99dot1

    Atf and wmo mix

    hey, pure ATF would be great but I don't think the detergents in it would "cancel out" all the filth from the WMO. I'm driving a Golf mk2 with the natural aspirated 1.6D engine. The mix I got from the local scrapyard has everything in it; ATF, oil, probably even brakefluid & coolant reminants...

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