Random/Multiple cylinder misfire

Re 2000 Chevy Cavalier. This car ran perfect a week ago, I went to fire it up a couple days ago after sitting for around 10 days and it sounds aweful and runs like crap. At first I thought it acted like a vacuum leak but after inspecting I leaned more toward a fuel distribution problem. I looked at the plugs and 2,3 and 4 were rich and 1 looks awefully lean. I added a bottle of Techron to some new gas and ran it through and still nothing. Can someone post a cheat sheet for pulling the injectors? If that is the problem. The code only came up as P0300.

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riverdog07
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