A neighbour had her Yaris engine written off as the oil pump failed. I believe some Toyota engines do not have the oil pump interlocked with the crank shaft and taken off the timing belt. Is that so? Is the Yaris one of these?
I am not sure what you mean by "interlocked with the crank shaft," but the effect of an oil pump that is driven directly by the crank shaft and a pump that is driven by the timing belt or chain is the same. If the engine is moving, so is the oil pump.
So if the chain breaks no oil and no engine.
If the timing chain or belt breaks, the engine will not run. If the engine is not running, neither the crank shaft or timing belt/chain will drive the oil pump.
I am surprised that your neighbour's Yaris's oil pump failed because I cannot recall ever hearing of a Toyota oil pump failing. Mechanical oil pumps are very simple devices, and since they are moving oil, they are always well-lubricated.
Ray O (correct punctuation to reply)
If the pump is off a belt and the belt snaps at say 70mph, In a car with manual gear change the driver could drop down the gears using engine brake to stop which means the engine is turning with no oil pump running, which could mean serious problems. Not fail safe.
It is the first I have heard of. An oil pump failing is such a rare thing on any car. I asked her if there was oil in it, she replied, yes. She was on a fast A road doing around 65mph. The engine was written off, which meant the car financially was. The rest of it is fine, so someone somewhere will buy it cheap and drop in an engine, or recon the seized engine.
Yes, this is a possibility if the engine is free-wheeling (non-interference). If it is an interference engine and something snaps at
70 MPH, I would not count on engine braking.The trend in newer Toyotas seems to be towards interference engines with timing chains.
One person's junk is another person's opportunity!
Which year's Yaris was this? Do you know if this is a common problem in the Yaris being sold in Canada, Europe, etc.? Yaris has only been sold in the U.S. for less than 2Y, I think.
And when you say the engine was written off, isn't that covered by the manufacturer's warranty? So shouldn't you be getting a new Yaris from a dealer through Toyota?
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