Also known as: 1nr-fe, 1nr-ve, 2nr-fe, 3nr-fe, nr engine, 1.3 dual vvt-i, 2nr-ve, 8nr-fts, 8nr, 1nr-fke, 2nr-fke, 9nr-fts, 1nr, 2nr, 9nr, 1nr-fse
Toyota's 1.3 with Dual VVT-i on both camshafts — in the Yaris, iQ, and Daihatsu's Sirion and Xenia. A small, chain-driven, port-injected four built for economy rather than for anything else.
Because it is port-injected there is no intake-valve carbon, which is the single most common modern diagnosis and does not apply here. A rough-running NR is ignition, fuel delivery or a vacuum leak, and the diagnostic path is the straightforward one.
The variable-timing solenoids and their oil-control valves are the recurring item. When one clogs the engine sets a timing code and loses response, and on an engine this small the loss is obvious to the driver. It is an oil-condition problem far more often than a failed part, because both phasers are hydraulic and run on whatever is in the sump — and these cars are cheap, often neglected, and driven short distances.
The water pump is the other item that arrives with age. Otherwise it is unremarkable and long-lived, which is what it was designed to be.
Cars fitted with this engine
11 generations, across 3 makes. From the authored catalogue — an absent car means the catalogue has not reached it, not that the engine was never fitted.
Daihatsu
Information, not instruction
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Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Posted about this engine
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What makes one worth reading:
- The car — make, model, year and engine. The same fault behaves differently on each.
- What you measured, not only what you replaced.
- What actually fixed it — or that nothing did, which is worth knowing too.
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