Suzuki cultus missing problem and car didnt start after heatup

[ghufi2013]

I have a cultus 2011 EFI, the problem is
Car gets heatup after running 10 to 15km with out AC and 5 to 10km with AC, and after that it starts missing and switched off.. and afterwards car didnt start.
After trying with 20 minutes gap and radiator cools down.. it starts like a charm.

Another problem, its performance on cng is very good comparison with on petrol.. on petrol its missing very frequently and choked when turn on ac
I have done following
Clean radiator
Clean throttle
Replaced plug wires..
Clean plugs
Change gaskit
Change tappit ..
Verified head walls
Change fuel injector..
But problem still persists

Anyone can recommend or help me in this..
I have tried multiple mechanics but none of come up with actual problem..
I live in karachi

[hash4u]

r u saying after all the things in the list the car is still heating up and missing ?
water pump replaced?

[pwuser16174333728]

Brother i'm from Faisalabad. I have cultus 2011 and i have same issue of heatup & starts after 20 minutes gap but only first time daily. Your problem resolved or not yet? Please reply or call me if possible. Nasar Hasnain 0302-7113363

[abid110]

Mr. Nasar, i had sort of similar issue, please have your fuel pump wiring checked as it is a regular issue in efi cultus of not starting up.

[pwuser16174333728]

Dear fuel pamp & wiring is ok. Car starts normally but after 10 minutes automatically off & do not start. After 20 minutes again start normally & whole day no any problem. Problem only first time daily.

[amiriqbal753]

Bro same issue in ma cultus too have ur solved if yes do reply plzz

[caxxxim]

Same issue with my cultus 2011, the main issue is fuel pump faulty. Thanks Allah, I have changed fuel pump and issue resolved 100%.