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.

Check Vacuum Lines, Air cleaner, fuel filter.<P>Could be the Depression chamber is leaking, and not getting enough suction to open the secondary. (My Problem, now corrected)

Thanks a lot. I got a copy of "Gregory's Automotive" manual for the 4X4 vehicle with details of the carburetor<BR>Please assist me to locate the Depression Chamber.For the secondary, does it means the Secondary Venturi<P>Best Regards<P>tyh1

tyh1 check the mitsu section on fixing your carb. its here on this site.

Yes, In order for the 2 bbl carb to open the 2nd bbl, the primary throttle in near wide open throttle, then vacuum pulls the secondary throttle open. <P>Yes, This is very strange to me too.... i'm used to mechanical linkage opening the secondary.<P>The Vacuum pulls a diaphram in what mitsubishi calls a "depression Chamber".<P>It is located at the Rear of the carb on the engine side... (yes it is buried) <P>see for details: <A HREF="http://www.outdoorwire.com/content/4x4/mitsubishi/tech/mikuni/" TARGET=_blank>http://www.outdoorwire.com/content/4x4/mitsubishi/tech/mikuni/</A>