Nissan Navara 2007 Problems

I can understand why you would think it's dangerous. We haven't had any other reports of this issue, so can't say that it's widespread as you claim, but it's something that needs to be addressed on your vehicle at the very least. It would not appear to be a problem of the vehicle going into a limp-home mode, as you would expect a warning light to come on. That said, switching the car off and on again usually reboots the computer and eliminates the problem. I would suggest it's a fuel supply problem, perhaps the pickup that the dealer is suggesting, or even the fuel pump or injectors.

Injector wear is a problem with all common-rail diesels, not just the Nissan. You should be able observe rough running, perhaps black smoke from the exhaust, and high fuel consumption. The chip won't be causing your ticking noise; that will be a mechanical noise. You need to determine where the noise is coming from to be able to locate the cause. One thing I would be looking at the camshaft timing chain, they wear and sometimes break on the Navara, and that's one possible source of your ticking noise.

The ute is seven years old, a Nissan dealer hasn't serviced it, and you don't say how many kilometres it has done, so it's hard to make a judgment on the validity of your claim. The only thing I would suggest is that you attempt to convince Nissan to change its mind and come good with their goodwill assistance.

The car’s electronic brain has observed some issue with the engine. Take it to a dealer or a mechanic with diagnostic gear and they should be able to isolate the cause and fix the problem.

This sounds like a classic case of a hydraulic lifter (also called a lash adjuster) that is dying a slow death. These components rely on engine oil pressure to maintain the correct clearance between the engine valves and the rockers that actuate them, and any wear will show up as a ticking noise when the engine is first started and is still building oil pressure. They can often 'tick' for a few seconds or more before going quiet.

The recurrence of the noise has probably got something to do with a fall in oil pressure at idle when the engine warms up, allowing the lifter to start ticking again. But the engines in this series of Navara were also known for ticking or rattling noises as the result of worn camshaft-chain tensioners, broken or damaged cam bearing bolts and wear in the auxiliary pulleys and belt tensioners. If the noise does turn out to be a dud lifter, do the smart thing and replace them all, as wear in one means certain wear beginning in the others.

We haven't had any other reports of paint peeling off on Navaras, but we note there are lots of reports of the problem overseas. I would certainly put it on Nissan to repair your car. If you want backup you could talk to a paint specialist like Graeme Cuthbert on 0422 444 335.

We haven't been alerted to the injector problem, so it's something else Navara owners should be listening for. With all the problems occurring today, you could conclude that carmakers have been cutting costs.

The kilometres done are about what you would expect a vehicle of that age would have done, but the price is high. I would think $13,000 to $15,000 is more reasonable. With a 3000 kg towing rating it would comfortably tow your caravan. The things to be aware of are low clutch life and high cost to replace them, and failures of the cam timing chain. The latter is generally put down to poor maintenance, so make sure yours has a credible service record showing regular oil changes.