My 4X4 is a Mitsubishi pajero (Montero) equipped with a 2.6 litre engine ( 4G54) with mikuni carburetor and is about 11 years old. Model is same as NG series with hydraulic tappets<P>Curently I am having a problem with the carburetor, such that when you step on the accelerator, there is a "dip" in power before it recovers and speed up.<P>Timing, fuel pump, fuel filter, all had been checked and are in order.<P>Tyh1<P>Distributor is CEI type.<P>Hope some of our more experience member could throw some light on the problem.