2000 Toyota Celica Gt Check Engine Light On Took Auto Parts Store Had Scanned

2000 TOYOTA CELICA
173,600 MILES
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My 2000 Toyota Celica GT has a check engine light on it. I took it to an auto parts store and had it scanned. It gave me the following codes:
P0300 - Random Misfire Detected
P0302 - Cylinder 2 Misfire Detected
P0171 - System Too Lean (Bank 1)
I put fuel injector cleaner in it today, as well as cleaned the MAF sensor. Sometimes when I'm accelerating , the check engine light flashes then goes back to staying on. I've checked all over for vacuum leaks and cannot find a thing. I've noticed a little oil on top of the engine, but I'm not sure if this is related to the the problem.
Mar 27, 2013 at 1:01 PM
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