Every morning or if my car is off about 2 hours this P0304 code comes and the check engine light comes on but is i turn the key off and starter again this code disappears some times i need to turn the key 3 times then the car run perfect,i change spark plugs and wires and fuel filter but still the problem i check compression is 210 and no vacuum leaks i swicht the injectors and coils and still same. i have this problem long time ago but after i change the fuel filter now is a litle bit better
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