Today took my 1993 rx7 fd for its MOT. The car failed miserably on emmisions. The first and prob main problem is that the exhaust / inlet manifold is blowing heavily. so i will look at this for the second time (just had turbo off skimmed and new gasket, nightmare) the second problem i can c is i have 4 wires coming from my lambda sensor, with only 1 wire to connect to. and i dont know which 1 it is meant to be or if it is meant to be like that at all ive only had the car 2 weeks please som1 help me am gong to order new plugs and leads this week Thanks Danny

 

Have you tried taking it to mazda mechanics so that they can check it out?
They have all the machines to test emmisions, so if they can fix it there it will pass with no problems. good luck

 

please please can some1 hav e a look maybe take a picture and let me know where there lambda sensor is thanks Danny