I 've owned this van for a month now and I still can't drive it! 86 syncro.
Symptoms...starts fine, new plugs, new water pump, new fuel filter.. gets up to
temp fine and then starts cutting out, black smoke, back fires...BOOM.., no
power, then sometimes regains it for a very short spell. I installed the
capacitor for the air flow and not a bit of difference. Could this be a fuel
pressure regulator problem? ( I can't remember what backfiring and black smoke mean,
too much fuel, not enough?)It defiantly seems like some sort of fuel problem,
but why is it non existent in the beginning?

Last shot and then it's off to the mechanics, grudgingly.

Thanks for any info,
                    Andy

99 NB Turbo
95 BMW GS 1100
93 BMW K 75
86 VW Syncro
71 VW Westy (For sale, needs motor)
65 BMW R69S grandfather's
Can't seem to pass up a deal....