rsnald, thanks for the update, ako rin I thought it was the clutch, Bagong calibrate pa naman ang injection pump ko. Sabi sa calibration ay palitan ko ng clear plastic iyung fuel line from fuel filter to injection pump para ma-view kung may bula o hangin. Nagpalit ako and meron nga at high rpm.

Meron very small leak sa filter, konting higpit lang...ok na.