Vas, soak any battery on this Forum with a garden hose and it'll start. Water will not drain a battery unless immersed for long periods of time.

Get to my list above and let us know what you find.

Exactly what you said ... unless immersed for long period of time.
In my case battery was under rain for 20 maybe 30 min.
That was enough .
Later after jump start everything was fine and no problem with start afterward.

Ok. No more arguing . I have wife for that.

Until tomorrow.

Vas, IMMERSED IN A BUCKET. My hood has been open in the rain allowing the battery to be soaked for DAYS. It still retains 87% of it'* charge after 2 weeks of this. Not to mention the fact that the passenger side hood vent allows rainwater to drench the hot terminal on my alternator non-stop in every downpour here in Oregon, the entire season.

Rain on your battery will not drain it.

Please update us when you have more information on your problem.

Ok.
Here is an update.

New wire set - Belden Premium.
New set of plugs NGK TR55 V Power.

When removing plugs #5 was slightly wet and #2 was wet.
Actron was showing #4 misfire , not #2 and #4 plug was nice and dry. Go figure.

Coil for plugs #2 and #5 had infinite resistance .
Replaced coil. Car still has #5 misfire,but only at idle.
At least car is driveable now. Yesterday two cylinders where misfiring all the time.

I have #5 misfire since day I bought this car. I was trying to swap coils, ICM, PCM (BillBoost sent one for checking). Nothing helped.

I was thinking it'* manifold gasket.
Well,gasket is new and misfire still here.
I guess it will be with this car untill the end of it'* days.

EDIT: When removed #5 after idling ,plug was nice and clean.

Swap the #3 and #5 injectors. See if the problem moves to the #3 cylinder.

I did swap injectors few months ago,I forgot to mention it.
Didn't help either.
Same #5 misfire.

EDIT: Oh,and those sparkplugs were Champion,not BOSH.
I don't know why I thought it'* BOSH. :?

Ok, but are the plugs PLATINUM? Platinum, no matter where they came from, is not the ideal choice for our ignition systems.

IF we can rule out ignition (plugs, wires, ICM, and coil packs), perhaps we should look at compression next. In any case, this thread should be put to rest now since the problem you originally had has been corrected. What say the elders?

Plugs aren't platinum. It'* regular cooper I guess.
Yes,original problem has been corrected and this topic can be closed.
Last year in July I started topic about misfire and it'* still unresolved.
Anyway, I'm not going to spend any $$$ to buy compression gauge just for one check.
I already loaded with all these scanners,fuel pressure gauge ,charger ,diff tools like I'm going to open my autoshop

Thanks everybody for help and best regards.