1996 Honda Accord loss of power when raining

Hello Walt nydegger

If you mean black smoke, yes you 're using lot of fuel.
A leaky fuel injector, too much fuel pressure, or clogged air filter
white smoke means coolant or transmission.
If the white smoke is sweet, it is coolant issue, if the white smoke is a burn smell, it is the transmission fluid.
If you have unburn fuel, water is acting as a conductor and shorting something out in the ignition system or sensor connection to the computer.

When humidity is high, moisture can condense out of the air and form droplets of liquid on any cold surface. If the surface happens to be a, ignition coil, the ignition voltage may find a shortcut to ground instead of following it's normal path to the spark plugs.

Moisture is especially damaging to PCMs and electronic circuit boards. Moisture can cause corrosion that shorts out circuits and causes all kinds of weird electronic problems. That's why flood-damaged vehicles are so unreliable. Sooner or later, they usually need to have the PCM and/or other electronic modules replaced. Your ECM is either located under the carpeting of the passenger's side floor pan, on earlier models or closer to the front console if you have later model.