Hello all,i have 1987 300 sdl 160k ,replaced my glow plugs and rebuilt my injectors pop tested within 75 lbs no higher than 2000psi.i thought i was going to be happy but it still smokes...blue ,white..GUYS the car sat for awhile i was told to put some algae cleaner in, wows lot of crap came out of fuel before i rebuilt injectors.I HAVE NO BLOW BY WHEN I open the valve cover...when i took the air intake i was surprised of the carbon build up,it was thick .#1 ,5,6 were wet ,the carbon build up was half way down the turbo pipe..im not sure what to ask but any help please,turbo rebuild or could it be exhaust problem,how to tell help ??THANKS FOR AL AND ANY ADVICE .after rebuilding injectors and g-plugs it does sound better. RICK ,,,,,yes im a electrician by trade