The jet valve that is out of adjustment, that one is stuck open allowing combustion to blow back into the carb.
Pull that jet valve out and either replace it of fix it and you should be set.


Cheers, Charlie
If It ain't broke, Modify it!
87 Montero turbo Converted back in Spring1989
95 Montero SR 3.8 DOHC Only one?
93 Pajero 3 door 6G75 Mivec with paddle shifted 5 speed
Then a Gen2 SR with full coil independent suspension.