Question about 2000 Mazda MX-5 Miata

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2000 Miata running lean. CEL keeps throwing P0300.

2000 Miata, 68,000 miles, running lean. CEL keeps throwing P0300. Have already replaced sparks, wires, coil pack, injectors w/ rings. Popping sound can be heard near air intake and rough idle. Most noticeable when pulling mildly on the throttle. Most symptoms when pulling away from a stop and when starting the car after it has been parked.

In fact was able to make it throw a CEL while car sitting idling on driveway and gently pulling throttle over a period of about 3 minutes. Whole problem began with a P0302 and a bad injector which was replaced.

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Posted on Oct 19, 2009


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