@tintin1 That rickshaw must be fitted with Toyota 1HD FTV 4.2 L, 24 valve diesel.
You have been given a good piece of advice by brother Arshad. But please get the engine re - build done by a mechanic who is a specialist in Santro work. There are a few mechanics who used to work in Hyundai 3S dealerships, which were later closed. These mechanics were trained thoroughly to work on Santro cars. And their services are still sought after by Santro owners. Brother Arshad whould be able to find one such guy in Lahore.