Q: Hard starting, 3-5 secs, when warm; CCV system, plugs, coils, air temp sensor changed. Runs OK

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Have changed out plugs, coils, DISA washer, CCV kit, air temp sensor, but not air distribution piece/washers. Have not yet done smoke re-test or replaced upper 02 sensors, though these were changed 2 yrs ago. But, diagnostics said they were not good. What else could be the problem?

Also noisy hole in CAT, other issues I can't handle, looking for good mechanic. I didnt do CCV

My car has 200000 miles.
My car has an automatic transmission.

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