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Slight random missfire... p0300, none of others worked

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project1g

15+ Year Contributor
267
1
Nov 2, 2007
Jacksonville, North Carolina
Ok, We've all head of the random missfire, I'm runnin a 7bolt with 16g Had the spuratic tach, problem was the PCM (power control module) And I've noticed that my power transistor has a wire showing, HOWEVER, I never had the random missfire code before, I heard about the crank sensor, and a few days ago I redid my timing due to the crank gear sliding off the woodruff key, everything down there was fine, I also heard the front 02 sensor, this is a realy big deal because my inspection is due before the 15th, My manifold has a crack in one of the welds which I heard can cause the o2 sensor to act up so I ordered a new manifold and I'm gonna revert back to the T25 turbo, but the main concern is getting my fuel efficency back I have a walbro 255 LPH and at one point used the 510 CC injectors from an evo 3 but went back to the 450s due to a fuel leak from one of the injectors, does anyone out there have anything else I can check?
 
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