Having problems with your 1999 Nissan Frontier ?
1999 frontier running rich - 1999 Nissan Frontier
Vechicle running rich could have faulty fuel pressure regulator or faulty oxygen sensor.leaking fuel injectors.could have bad ignition coil causing weak spark.
Maybe the brake of your car is wrong.You can check it .
Repair Help & Product Troubleshooting for 1999 Nissan Frontier
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