I am not sure how to adjust the injection timing on the mercs. If I recall, they have an in line injection pump that is gear driven, rather than the rotary one driven from the timing belt that I'm used to. On the rotary ones, you loosen the 4 bolts that hold the pump in place and physically rotate the pump a bit, while using a dial gauge in the back of the pump to check exactly where it's set.
We did run a '74 300D on heated WVO with no changes to injection timing, and it made a little whitish smoke, but the black smoke went away. Are you heating the WVO, or just thinning it with biodiesel? If excess black smoke is the problem, I am not sure you want to retard the timing. Generally you advance the timing more to decrease black smoke. Although this also drives up exhaust gas temperatures so you have watch you don't overheat the pistons. http://www.coloradobiodiesel.com/injectors/svo.html has injectors specifically designed for use with higher viscosity fuels. If you're going to get more detailed than just sticking biodiesel in there and going, like I have done, you might consider these. Zeke On 11/8/05, Mike Weaver <[EMAIL PROTECTED]> wrote: > Look up "pump timing" someone in the benz group did a write up on it - > there is a big MB diesel group on web - I'm sure you can google it. > > -Mike > > Kenji James Fuse wrote: > > >I've been so impressed by this list, I thought I'd ask a Mercedes-specific > >question even before I try an MB site: > > > >Any of you fine folk know how to retard the injection timing on a 1976 > >300D (115 114 chassis, OM 617 engine)? > > > >It runs fine on 25-30% diesel or biodiesel and 75-70% wvo, but it smokes a > >bit more than I'd like (whitish, but particulate-heavy, as far as I can > >tell). I've fiddled with the altitude compensator on the IP, but that just > >makes it stall. > > > >Any suggstions greatly appreciated! > > > >Kenji Fuse > > > >PS. The Haynes manual I have has a listing for the 'timing device' in the > >IP, but there is actually no info there... > > > > > >_______________________________________________ > >Biofuel mailing list > >Biofuel@sustainablelists.org > >http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org > > > >Biofuel at Journey to Forever: > >http://journeytoforever.org/biofuel.html > > > >Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): > >http://www.mail-archive.com/biofuel@sustainablelists.org/ > > > > > > > > _______________________________________________ > Biofuel mailing list > Biofuel@sustainablelists.org > http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): > http://www.mail-archive.com/biofuel@sustainablelists.org/ > > _______________________________________________ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
