buddy check these all things mentioned by every one be sure of it and let me also tell u
1.fan
2.a/c ki jali
3.radiator ka cap i mean us ka sar dekho radiator say pipe gaya hota hai chotay bootle tak us ka dhakan kholo aur phir us smal botal ka pipe apni zuban par lagao aur laga kar suck karo dekho zuban ko pakarta hai k nahi radiator ka cap laga k check karna yani jo zuban pakray to wo sahi hai ok dude aur used lagana new nahi
4.radiator ki safai karwa lo ac jali ki bhe
5.agar thoray arasay bad bar bar tung karnay lagay to 100% gas kit hai buddy main kal apni honda main change karwa kar aa raha hon
6.main point raat ko gari khari kar k then is ko subha check karo pani radiator main agar kaam ho to dalo then start u r car with open cap of radiator 3 min tak gari aisay hi choro then accelerator do aur dekho k radiator k pani main bubbles bantay hain k nahi agar bantay hain then it is 100% sure gas kit gas kit change karwa lo agar bubbles nahi hain to phir koi aur masla hai dost
6.fan ki jo machine hoti hai us ko check karwao dekho shor ziyada karay ga magar speed say nahi chalay ga check that also
7.wo choty bootle main check karna k pani k sath koi sticky sticky mati jaisi cheez ho gi i mean kachra magar wo engine oil hota hai (mobil oil) wo sara engine oil kharab kar k pani main convert kar deti hai ok dude
wish u best of luck