Got a starting problem on my 2003 renault kangoo 1.5dci. After turning the ignition the engine light with stop in the middle of it flashes and the preheating warning light stays on. Seems to be intermittent as sometimes will fire, but as it stands the engine just keeps turning over. Both those lights should go out before firing, however i believe if the glow plugs were faulty (which i have replaced by the way) it should still fire. No codes come up on the diagnostics equIpment. If anyone could point me in the right direction that would be great.