Engine Performance problem 1989 Mazda b2200 4 cyl Manual I just bought a 1989 mazda b2200 5 speed a few months back I recently took it to get smogged and it failed three times it runs very good all I was told is that it is running rich and that it has a crack in the crank shaft valve I have replaced the catylitic converter replaced all filters all spark plugs & wires vaccuum hoses dont …
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