Engine Surges

[morpheus]

Im not sure what the problem is but here is a rundown of the symtoms, BTW a mate has a terrano with a similar problem and the mechanics at nissan arent sure what it is but they say it may be the injectors

Driving around 80kmph the wizard seems to surge when i put my foot down a tiny bit and then if i take it off a little you can feel it decelerate due to engine braking, it is very annoying as you cant just sit at one constant speed and it feels like you are either accelerating or decelerating,
Its not changing gear as the RPM never moves and the moment in the accelerator is very small

I dont think it is the fuel filter as they changed it in the terrano and it made no diff

[geeves]

Could be injectors but also a stick wastegate on the turbo might cause this. Which year wizard

[morpheus]

Its a 98 version with 4jx1 engine

I see they have a problem with diesel getting in the sump and are being recalled
www.stuff.co.nz/stuff/0,2106,2951841a11,00.html

[geeves]

Oh dear!!!
When was your vehical impoerted If it was very recent then theres a chance this mod has been done As far as Im aware theres no easy way to confirm this though The recal in Japan was about 2 years ago.A talk to the local Holden dealer might help though.
Anouther thing that realy hurts these motors and could cause these symptoms is the wrong oil. Make sure you use a good synthetic 5w30 oil and change it fanaticaly at 5000k.
The injectors are driven by oil pressure via very small pipes and a blockage could cause this.
Good luck