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I have a 2005 civic ex which i just changed the spark plugs in, it hesitates when accelerating noticed the issue like 3 days ago, also saw a lil bit of oil in my first cylinder from the left but the other 3 were dry, theres no codes but maintenance req’d light is on it’s stressing me out please help 🙂

 
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What brand of plugs? What's your trans fluid look like?

 
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Denso Spark Plugs and trans fluid looks good
I do have P0128 and P0420 so yea but it might be due to the coolant stuff

 
Rep Power: 222

If the engine isn't seeing the correct temp that could cause an issue. So can a clogged cat

 
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P0420?
your cat want to fart, uncork it

"High Rpm Low engine speed" are contradictory

 
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Lol yea working on that

 
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Temp jumps up and down I just got a new radiator and thermostat too so i’m not sure what the hell is going on

 
Rep Power: 224

Was the coolant properly bled? Are you having overheating issues?

 
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Coolant was bled when i swapped radiators and I am beginning to have overheating issues

 
Rep Power: 224

Leaking coolant? Reservoir tank overfilled and/or overflowing?

 
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I know the hose from the reservoir tank by the radiator cap was leaking but i got a hose clamp to closed it so its not leaking anymore

 
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Radiator level low? Reservoir tank overfilled?

 
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reservoir tank is not overfilled and i filled the radiator a couple days back

 
Rep Power: 224

I was thinking head gasket, very common on this generation Civic. Would cause overheating and possibly other issues. Radiator level would always drop when driven, reservoir level would rise until it overflowed. Maybe not your issue.