Car cutting even after changing petrol pump + filter

if no codes check and test cat converter--egr valve --fuel vent

Question edited for clarity.
Question moved to Nissan.

There is some ideas in the link, but you need to find someone in South Africa that has a scan tool computer. Dirty injector from bad fuel is the most likely. Check the spark plugs as well.

https://www.google.com/search?q=2008+Nissan+Champ+1400+is+jerking+and+cuts+off+when+I+accelerate+to+50+kph

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Do you have a check engine light on? Have you scanned for fault codes?

Have the fuel filter changed most likely cure.
If not it could be numerous problems from fuel pumps to injectors, coil packs,spark plugs air filters etc
Try the fuel filter first if it isn't cured get a diagnostic check done by a garage.
Note petrol and diesel can have different causes also the fuel filter on a diesel is not a diy job.

Just check,

• fuel pipe
• fuel pump ,fuses, wiring
• if mpfi engine, check the injectors.
• spray some fuel line cleaners into fuel line, pcv, air filter
• pls vote!!
  

On 2007 Toyota Hiace the petrol fuel filter is integrated in the fuel pump assembly placed inside fuel tank. It's not possible to change the petrol fuel filter without remove the fuel pump out from the tank. The petrol fuel filter is for fuel pump life.

you may need a new fuel filter,also check the fuel pump.if there are no codes then its probably the filter.

Check your manual for Bleeding the system. Sounds like you have air in the fuel lines. Look in your manual also at Changing your fuel filter. It will
explain the right way to get the air out. Did the manual say where the cut out switch was??? That would be the switch that shuts the fuel off to stop the engine.

if the pump is in the tank (which i think it would be) then you're going to have a tougher time. if you could make an adapter to that the pump sucks the gas through a filter first, then all you would have to do is change  the filter in front of the pump. as for modifying it, idealy, you would need to get an external pump and have a filter in front  of it.....could mount it outside, but either way, you will have to do a bunch of jimmy rigging to try and get it to work... good luck, don't know what else to recommend to you..

Have you checked or changed the fuel filter, its next to the pump