Nissan Repair: 1992 nissan serena, fuel milage, full tank

Question
hi, i have a 1992 nissan serena fx 2.0 ltr pet full time 4wd. On a full tank can only get 400km is this normal, is the full time 4wd able to be disconnected to save running 2 diffs to get better fuel milage.
thanks.

Answer
Steve,

If the hubs have manual or auto disconnect the drive line is not going to cause you mileage problems.  I would look at things like the fuel filter, timing, spark plugs and a tune.  Also, if yours has a converter be sure to make sure the exhaust is not blocking from age.  Email me back and let me know what you find.