The same cold-start symptoms could be a moisture-laden fuel system. I
would try a 12oz container of isopropyl drygas first.

My '95 Civic's headgasket began to leak anti-freeze into the oil at
around the 110,000 mile mark. I discovered this when I sent an oil
sample to Blackstone Labs and they confirmed this through
spectrographic analysis of the oil. Costs about $20. Don't bother with
the extra $10 "TBN" test to check for anti-freeze.

http://www.blackstone-labs.com/

However, the car ran like a top the entire time. I never knew I had a
problem.

--- Bror Jace