Stumbling upon take off. Misses

[Tlee94sbc350]

Hey guys just bought a 1994 Chevy k1500 5.7 tbi. Drive it home last night, ran okay. Today I used engine degreaser on the entire engine bay and and wanted it off. Now it runs like crap! Has aa slight miss. II can barely drive it down the street. started tearing into it a bit today. I'm looking for basically any info that people are willing to share. I was thinking of just buying a new cap and rotor and wires. I don't know much about this tbi
Any input is greatly appreciated.

 

[Tlee94sbc350]

Some pictures of me tearing into it

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[Tlee94sbc350]

I found a screw in this Lil guy any idea why someone would block it off?

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[evilunclegrimace]

I found a screw in this Lil guy any idea why someone would block it off?

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It looks like the vacuum line for the EGR. Try pulling the cap off of the distributor and spraying the inside out with WD-40.

 

[Tlee94sbc350]

Hey guys I replaced the cap and rotor along with ignition coil and a few bad vaccum lines. Runs pretty decent now. Thanks to those who took the time to help out