I had an engine failure (total loss of oil -no warning lights etc.) Required new engine. Paid £3000 plus for recon engine, engine would run but stop. Replacement injectors diagnosed by Mazda garage. Replacement injectors fitted and coded, problem persists. No faults show on diagnostics and they suspect engine (what possible?) engine suppliers state no problem with engine. Is there an integral engine re-assembly problem that could cause a problem with the engine that would not show on diagnostics check? No one will take the problem on board and I do not know where to go from here.