Timing chain
#1
Racer
Thread Starter
Timing chain
Im considering picking up a used 2010 rx350 with 116000 on the clock. Should I be worried about whether or not the timing chain has been replaced? And if so when should it be done?
#2
As per your post, you seem to be aware that Lexus RX 350 V6 engine year 2010 and later have a Timing Chain not timing belt that never needs replacing.
Some people suggest that if there's noise coming from this particular item at a higher mileage, chain should be inspected for worn parts. But it's not a serviceable item and it's highly unlikely that you would experience failure.
On the other hand, this engine is a non-interference engine meaning that there should be no harm to the engine should the timing chain breaks off.
Cheers
Some people suggest that if there's noise coming from this particular item at a higher mileage, chain should be inspected for worn parts. But it's not a serviceable item and it's highly unlikely that you would experience failure.
On the other hand, this engine is a non-interference engine meaning that there should be no harm to the engine should the timing chain breaks off.
Cheers
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RedRover (03-16-19)
#4
Lexus Champion
It is usually accomplished by the way of tensioners reverting back to their released position when there is no engine oil pressure, causing the chain to slap itself on engine restart.
I don't believe Toyota suffers from such engineering feats.
#5
Instructor
Many manufacturers engineer timing chains to break as a way of planned obsolescence, but not as a recommended service item.
It is usually accomplished by the way of tensioners reverting back to their released position when there is no engine oil pressure, causing the chain to slap itself on engine restart.
I don't believe Toyota suffers from such engineering feats.
It is usually accomplished by the way of tensioners reverting back to their released position when there is no engine oil pressure, causing the chain to slap itself on engine restart.
I don't believe Toyota suffers from such engineering feats.
#6
#7
Racer
Thread Starter
So is the answer to this one no? It sounds like it never should need replacing
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#8
Lead Lap
iTrader: (1)
Each vehicle and situation is different; however, many members believe this item could last quite some time before needing replacement or servicing.
I have personally seen 1 timing chain in my lifetime needing replacement due to wear (although some call it stretching) due to a faulty guide that increased timing chain wear.
When in doubt, have a qualified mechanic inspect the vehicle you're interested in.
Best of luck with your search!
#9
Nothing except death and taxes is certain. But Toyota/Lexus seems to have a very low incidence of chain guide failure. The best defense (even for problematic Fords) is to use the best synthetic oils and max 5K oci. So check the maintenance history.Even with those bad Fords, some people go over 200k with no issue and some fail at 70K. Cold startups, more highway driving, climate, oil change interval, etc, could be a major determining factor.
#10
In nearly 50 years of owning and driving many different makes and models of vehicles, I have never had to replace a timing chain. As previously pointed out, keeping your oil relatively clean with proper oil and filter changes probably helps. So does not abusing the vehicle's performance capabilities on a regular basis.
#11
Typically no one replaces a timing chain, if anything the supporting mechanisms per engine are simply inspected like its hydraulic tensioner and guides. The failure rate of these Toyota/Lexus timing chains are very low especially if oil is serviced regularly per the recommended change intervals.
#14
Intermediate