hello everyone,
after replacing my thermostat housing I tried to start the car but it goes freak you can see more details in the video below

Check all your grounds and battery condition. Definitely electrical problem.

Thank you I will double check and use a car starter to give the battery extra power.
the car was parked during roughly 1 month since it has the overheating problem

I tried to start the car with a jumpstart this time it cranked but does not start
i think I need to get a home battery charger to charge it .

Take the battery to a auto parts store and have it tested. It may be bad or going bad. A battery can hold a charge but not a full charge and turn the engine over without starting.

You were right I putted my Hyundai Elantra battery on it the car is not starting but crank multiple times
i want to perform a compression test and I don’t know if this kit is compatible with my mini here is the spec
i tried all the brass but does not fit?

Thread width is 14mm. You will need a 14mm male fitting.

I charged to battery put it it the car but no better results

Your battery is probably bad. Take it to a parts store and have it tested. Youre just spinning your wheels otherwise. You are getting no where by all this home diagnosis.

Ok thanks i will test it and see