Fellow forumers please do help



Yesterday my brother after getting some gasoline from Petron and leaving the gasoline station - the car just suddenly stopped. Then one person claiming he is a mechanic from Shell approached my brother. It was late past 12 and with limited choices he asked for help

Things done:
1. Check battery ok
2. Spark plug ok
3. Tried to start ayaw tumuloy parang namamatay.
4. Flushed the radiator and water outlet with new water
5. Re wired the the fan at the front that it will start at the same time with the key on (not anymore with the thermostat) - fan is ok
Thermostat not sure.
6. Noted some spark in the engine transmission lines (mukhang may galos un wire just tape it for replacement later)
7. Still cannot completely start (namamatay)
8. Stop and leave it in the gasoline station

At the morning
1. Fortunately tumuloy mag start and upon arriving near the house the temperature had gone way up - overheat
2. He (claimed mechanic) said it was a cylinder gasket and he offered his home service for repair (Php 2500) to change it.




Questions please

1. Best guess, for the problem would be?
(cylinder gasket?, water pump? others?)

2. Is there any easy way to check it?

3. Other possible options.



I plan to get some advice before going to the mechanic (another one)

Other advice is very well appreciated.




BTW: Ride is 96 Model Lancer (bilog)





Thank you in advance!