Sounds like you are jumping arund a bit there from one symptom to another without being methodical and ruling something out.
Ok, you now know the fuel pump works
But you are not getting fuel into the engine.
That only leaves the carb. You are going to have verify this is the problem and take it apart. A common issue is the float bowl and the inlet valve. A piece of dirt can lodge in the inlet or the float be set too low.
Those platinum plugs may not be good. Ordinary plugs work best, nothing fancy. You need to gap them correctly and check you have a regular bright crisp blue spark. If tey are gapped and you do not it is because your coil is not deenergising properly. Have a look at the voltage at the coil and whether the engine is properly grounded.
BagusJeep lives in Bali.
1981 CJ7 258ci - Bagusjeep
1984 CJ7 258ci - Puthijeep
1981 J20 258ci - Gladys
1951 Willys CJ3A/MB/M38 - Little Willy
1995 Cherokee 4.0 - CHEROKEE