I understand a cam belt should be changed at each 100,000 kms,
Are there any maintenance issues, servicing or recommendations / advice regarding a cam chain for a car around the 100,000 km mark!
Thank you!
thunderbolt,
Nov 1, 11:25pm
Not all cambelts are replaced at 100km, they range from 60k to 150k mainly. Timing chains will let you know when they are beyond servicable life, either by noise or chain stretch causing running issues. (check engine light on due to timing fluctuations) In general, keep up with the oil changes and your lifespan will improve. The long chains on V6's seem to be causing the expensive repair jobs.
franc123,
Nov 2, 5:02am
As a general rule, no, the best you can do for the chain is regular servicing with good quality oils. Deliberately buying a vehicle because it has a chain is no guarantee that there won't be problems with the timing system though, many have found to their disgust that replacement has been needed before 150k has elapsed, partly through lack of servicing and partly through cheapskate engineering on the part of some manufacturers. The costs for this are normally much more expensive labour wise than for belts. If a vehicle has a belt that you otherwise like, don't avoid it just for that reason, it is after all only one maintenance cost, why people make such a big deal out of this in NZ is anyones guess.
Audi V8, that's the firewall side of the engine too
gadgit3,
Nov 2, 5:56am
Don't leave that there it's starting to make the place stink. lol
kazbanz,
Nov 2, 6:27am
MSS-there isn't a generic one answer fits all. IN THEORY a cam chain lasts at least double the time a belt does and rather than breaking when worn will loudly tell you its time to be replaced. But some have proven to be problematic. If you could be specific in the make/model(s) you are concideringyou will get a better answer.
intrade,
Nov 2, 6:31am
some cambelts need doing every 40,000km on some Gm opel holden products . chain engine usually are ok but if you dont change the oil the chain tensioner gets to have problems and wearout on chainguids slackens the chain chainrattle and chain backlash with chain stretching occures and then you are in for a 10 times more expensive repair thenon cambelt engines. Also doing hedgasket is more difficult on most chain angines as you got to make sure the tensioner and chain stay in place while removing head.
mss2006,
Nov 2, 6:53am
Hi all, thanks for the input - Clears things up!
Specificity Im looking at a 2006-7 Mazda Axela 2000cc with verable valve control.
kazbanz,
Nov 2, 10:03am
I haven't heard anything bad about those 2.0l VVTi engines so I'd expect 200-300k from one before even thinking about a chain
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