I bought mycar 2 yearsago. It is a red 1990 Gplate Nissan 300 ZX UK spec. When Ibought the car I knew the turbos were not good. So I sent away for reconditioned turbos and had them replaced with a reputable mechanic. Thiscost me nearly£2000 as youcan appreciate I could afford much more. Thecar seems to backfire sometimes and does not run correctly, ie no power hardly. I have heard it may be the timing belt has slipped a digit -could this be the case and I have also adjusted the hycas to no avail. Could anyone please advise on my course of action.