Kryogen

Does the timing chain wear issue only happen on badly maintained card?

If oil changes were always performed properly, and it wan on synthetic oil since 35K miles, will it develop the issue eventually or it just happens on cars that were not getting frequent oil changes?

Kryogen

quite funny that everyone is talking about this issue and no one knows the answer to this easy question.

Fakie J Farkerton

iTrader: (51)

Your best bet is to just maintain yours and wait to find out.
It looks like it is a faulty design on this gen though IMO.
I hope that everyone that has had a problem wasn't neglecting their car and then wondering why.

Good luck with your survey.

Kryogen

honestly, so far, with all I,ve read, I still don't know.
will it happen anyway, or will it just happen on badly maintained cars.

So far I have 185 000KM and no issues....

chrome91

iTrader: (1)

the chain itself can stretch over time (very high mileage cars), usually a tensioner or guide is the first to wear out though

Kryogen

That's what I am asking.
Will tensioner shoes wear during the life of the car on properly maintained engines?
Or does it just happen on neglected engines.

chrome91

iTrader: (1)

they can fail on properly maintained engines, but its usually at a very high mileage. that is unless theres a known problem, like KA24 engines had timing chain noise early on from the OEM guides being crappy and wearing

if its not a known problem, you can replace the chain, guides, tensioner, etc when you get around the 250,000-300,000km mark i suppose. usually you'll hear some noises when its going bad though

Kryogen

how hard is it to do yourself?

what's a badly maintained engine btw? be more specific?

Terrentius

Not easy, not hard either. Just really depends on whether you're willing or not.

chrome91

iTrader: (1)

if you run a engine low on oil or never change the oil and it turns to sludge, im sure that affects the timing chain setup. in my few years of working on cars, ive only seen i think 2 or 3 chain setups fail. i think they were all due to the tensioner or guides, and were high mileage cars. i dont think my Nissan pickup or Supra ever had the timing chain stuff replaced, my pickup went to the junkyard running with 250,000km on it and my old as ballz Supra still runs so im assuming the chain is okay

ive changed one chain myself before, not too bad. on my stuff with timing chains, i dont worry about it until i hear timing chain noises.

Kryogen

so that timing tensioner issue does not happen on properly maintained cars?

Terrentius

Well, from what I've been told by the techs is that Nissan switched either material or supplier for the tensionsers themselves of the 07/08 models, which has resulted in inferior tensioners. It is these defective tensioners that are failing, not the chain itself. So, even on properly maintained 07/08 cars, it is not uncommon for the tensioners fail.

Costee

Defective tensioners are not only associated with the 07/08, but the 6th gen in general. The video clip is of a 2004 for example. Somehow, I'm apt to think that the tensioners wear out more from synthetic oil than dino and that it's preferable to use one with a relatively higher viscosity. Just a hunch.

Kryogen

oh well, if it ever happens I'll just replace those I guess. Doesn't seem too hard after looking at the videos.