2004 navara d22 zd 3000 400,000 plus ks. Help

White smoke is unburnt fuel, so going on the history of those engines, and the mileage of your vehicle, I'd say it may have burnt out a piston crown.

Actually there wouldn't be too many ZD30's that have done that mileage....... Nissan might give you a new one! TIC

Bob

Advice: Go to mechanic. 400,000+ k's - motor needs rebuild - it's pretty much worn out by this stage.

had a similar issue with ours at 130,000 k's - took Nissan 3 weeks and $1500 to find that the fuel pump need re-calibrating

Thanks for the comments re mechanics guys, but that's the problem; 3 good mechs with 3 fixes from $500 to $7000


And what are their opinons on the problem?

At 435,000 plus kms, your engine is going to need more than a $500 fix. Try a new engine.
What kind of life do you think a 3 litre diesel in a 4WD has? It's worn out, it probably has at least a broken ring, it could have a blown piston, it could be a blown head gasket - and it could be a raft of problems, that are all associated with 10 yrs of hard life and lots of distance covered.
Little wonder the mechanics can't agree - at that stage of its life, the problems would be multiple, and all related to severe and extensive wear.

Cheers, Ron.