I'm old school. It would more likely be a computer problem, OR, possibly a worn
timing chain.
Sorry, I can't help  more.
If you check more messages in this NG, I believe that there is a recommended
site to look at:
4X4wire.com or something.

As far as I know, it is fuel enjection type engine. Can it be fuel
injector problem?
Thanks.

It sounds as if it is flooding. If it is a carburated engine, check the choke
operation.

97 galant 2.4L 4cyl 98kmiles. Recently it won't start when the engine
is hot. It cranks, but does not catch. When finally it catches after
several tries, the rpm stays 200-300 for couple of seconds and then
finally goes to 2000 and idles fine. However, it starts fine when the
engine cools down. During no start, the fuel tank was hit with a hammer
to check fuel pump, but does not help. Distributor has sparks during no
start. Any ideas fellows?

I do not know if it is related or not, but raditor reserve tank was low
on radiator fluid for some time. I just refilled the tank. Should I
flush and refill the radiator fluid?

Thanks.