1982 300tdt engine
Symptom: black smoke on accelleration

possible reasons: dirty air filter (replaced), mis adjusted alda (turned it down a bit but couldnt reach high speeds and had poor accelaeration), intake valves not fully opening, algal infection (looking for algacide now cant find anyone who has it).

anything else- weak Boost etc..?

starts up on first or second turnover idles fine as far as i can tell

thanks
will

__________________
'73 VW camper
'80 300td wagon