hi
i have a ae101 bz touring wagon (black top 20v)
i have the same problem i have tryed that timing like has been sugested
it made it a little better but did not fix it
i cant work out what the hell is causing it
car has new cambelt just been serviced new spark plugs oil filter all that shit
running it on 98
only ever dose it for a short while after starting it , and not all the time
maby the 20 v just dont like our shit petorl in nz
i might try some outane booster next fill up see if that makes any diffrance