Hi there, had a search, but nothing really matches my issue.
I have a 1985 90, with a 200tdi in it. It has been converted [properly, using a smartveg system] to use veg oil.
For the last few months [been on veg oil for almost a year now], when I sit in a traffic jam or similar for more than a minute or two, a puff of white smoke [with maybe a hint of blue] comes out. This only happens on veg oil, not diesel.
As well as this, I have experience a loss of oomph from the engine. Previously I could manage a cruising speed of 75/80, now it is more like 65/70, and if there's any sort of hill, this drops to 55/60. This is on both diesel and veg.
I asked on a veg oil forum, and they said this often happens with old injectors. So I took them out and the local diesel injector man had a look at them, and said that they were fine. I put them back in and now it appears to have slightly less power than before!
Have also taken out the air filter [only a few months old], to check the air hoses are clear, and they are. There is a small amount of oil in the turbo pipe, more than I'd expect. Could this be the/a problem? Not noticed any odd noises from the turbo before.
Any ideas as to what it is/where to go next?