just for the record...and to finally give back a tiny bit to this forum that I have a pathological addiction to reading but not posting, I did the same as Ramblin - replaced all six nozzles with bosio from D.G. and they seem to be performing well - most noticeable improvement is that cold starts are MUCH smoother. I did toy with the idea of having them pop tested after fitting the new nozzles, but I thought I"d just see how they ran first. Now I'll just wait until next year and see how they are doing. By the way, the old nozzles were quite loaded with soot. One, in fact was apparently clogged (which is where this story really begins) - no doubt because I am running unwashed B100 - probably could have given them a good cleaning and been OK. Anyone who still wonders what the side-effects of running anything with glycerol in it...maybe I'll try to dig up the picture I took and post it.

have fun,

prc

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1986 300SDL 175k
2003 VW Passat Wagon 58k