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Navara D40 timing chain issues

17837 Views 4 Replies 3 Participants Last post by  smj999smj
I have a 8 years old Nissan Navara D40 with YD25 engine. I can honestly say it's been always serviced on time and we used the best oil and filters. A month ago when we started the engine it started to give a really bad rattiling noise.
125000KM on the clock and the engine went bang few days ago. My mechanic opened it up which took several hours and he called me saying the timing chain has snapped. It is really frustrating as I wouldn't expect this from a Japanase made Nissan.
We tried to check what may have caused this problem and we noticed that the timing gear and the crankshaft sprocket are worn off.
I've attached few pics of it below:

Does anyone know how often the timing chain is due to be changed? I thought these chains last 180K km at least.
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From my experience timing chains should last the life of the motor. Timing belts need changed every 100,000 miles.

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That is definitely not a normal lifespan for a timing chain.

We had a timing chain issue with the VQ40 that's in my truck.
The timing chain guides were made from an inferior material.
They would wear till the chain rubbed metal to metal.

After many complaints to Nissan they eventually extended the warranty for repair.

Your issue seems much worse.

The bright side is once your engine is repaired properly. It should last a long time!

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