My 86 5000 turbo automatic has just begun to hesitate on full throttle at 1.3 bar. There is no injector blower motor or aux h2o pump, could these be the problems or could the fuel filter be clogged? Is the 2084 tool really needed to lock the crankshaft? Can't I use something else? Thanks for the info. 1987 4000CS Quattro 1986 5000CS Turbo