1989 Mazda b2200

1989 MAZDA B2200
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ESTRADA11414
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Engine Performance problem
1989 Mazda b2200 4 cyl Manual
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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 know what to do to correct this problem i really need to know if this is fixable
May 28, 2008 at 6:09 AM
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RASMATAZ
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it failed three times it runs very good all i was told is that it is running rich

Possible causes include a bad O2 sensor, excessive fuel pressure (bad fuel pressure regulator or plugged return line), leaky fuel injectors, dirty air filter or restricted air inlet, or a defective coolant sensor that prevents the engine management system from going into closed loop mode.
May 28, 2008 at 6:16 AM