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whats up i have a 01 ex with 192k miles. i replaced the front brakes spark plugs and coils the other day. i also replaced the IAT sensor because i had a p0113 code and the oil pressure switch needed changed but the p0113 code still there. Now my code reader wont work just beeps and says error. Did i possibly mess up my ecu changing out that iat sensor? Then i noticed a strong gas smell and found a hole in the muffler blowing black liquid out of it and blows alot of white smoke. I took it for a little test drive and after i got it to around 2k rpm it misfired alot then went away. Kind of feels sluggish and when i first started it up it almost died out. What could all of this mean?

 
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sounds like a classic case of blown head gasket..

 
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agreed, white smoke usually a sign of coolant being in the cylinders , hence the misfires too.
check your coolant levels when the engine is cold, also can watch for air bubbles in the rad cap area.

 
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Figures especially at 192k. i'll look for more signs to see if thats the issue. what would cause the black stuff to shoot out though? It was like a gas/water mix

 
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man, if it waited that long to pop, consider yourself lucky. lol

couldn't tell you on the black liquid shooting out tho, especially a fuel/water mix coming out the tailpipe

 
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not sure on the black liquid? ,,sounds like just regular exaust/emmisions with carbon?

 
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I was thinking that, too, but OP said it was an fuel/water mix. If it's missing that bad, could be a stupid amount of fuel making it into the exhaust stream along with post-cat condensation