The 1.0-liter Toyota 1SZ-FE engine was produced from 1999 to 2005 in Japan for the Yaris family of models only. The motor was equipped with a phase control system of the VVT-i type only at the inlet, and the gas distribution mechanism of the unit was driven using a Morse chain.
SZ family: 1SZ-FE, 2SZ-FE, 3SZ-VE.
Specifications
| Production years | 1999-2005 |
| Displacement, cc | 997 |
| Fuel system | MPI |
| Power output, hp | 69 |
| Torque output, Nm | 95 |
| Cylinder block | cast iron R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 69 |
| Piston stroke, mm | 66.7 |
| Compression ratio | 10.0 |
| Features | no |
| Hydraulic lifters | no |
| Timing drive | Morse chain |
| Phase regulator | VVT-i intake |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 3.2 |
| Fuel type | petrol |
| Euro standards | EURO 3/4 |
| Fuel consumption, L/100 km (for Toyota Yaris 2000) — city — highway — combined |
6.9 5.1 5.7 |
| Engine lifespan, km | ~200 000 |
| Weight, kg | 91 |
The engine was installed on:
- Toyota Platz XP10 in 1999 – 2005;
- Toyota Yaris XP10 in 1999 – 2005.
Disadvantages of the 1SZ-FE engine
- This engine is extremely sensitive to quality and especially to the timing of oil changes;
- There is a chain jump and a meeting of valves with pistons due to the wedge of the hydraulic tensioner;
- In severe frost and vice versa, the heat may leak air into the intake manifold;
- Due to the design of the pump, oil is carried through the system for a long time after the engine starts;
- It is very difficult to adjust the valves, since you need to change the entire drive sleeve.
Frequently asked questions about the Toyota 1SZ-FE
How much power does the Toyota 1SZ-FE make?
The Toyota 1SZ-FE develops 69 hp and 95 Nm of torque.
How much oil does the Toyota 1SZ-FE take and which one?
Engine oil capacity: 3.2 liters. Recommended oil: 5W-30.
Does the Toyota 1SZ-FE have a timing belt or chain?
Timing drive of the Toyota 1SZ-FE: Morse chain.
Is the Toyota 1SZ-FE turbocharged?
No, the Toyota 1SZ-FE is naturally aspirated.
Does the Toyota 1SZ-FE need valve clearance adjustment?
Yes, there are no hydraulic lifters, so the valve clearances have to be checked and adjusted periodically.
How long does the Toyota 1SZ-FE last?
The typical lifespan of the Toyota 1SZ-FE is ~200 000 km with proper maintenance.
What is the fuel consumption of the Toyota 1SZ-FE?
Toyota Yaris 2000: city 6.9, highway 5.1, combined 5.7 L/100 km.
What cars was the Toyota 1SZ-FE installed on?
Toyota Platz XP10 in 1999 - 2005; Toyota Yaris XP10 in 1999 - 2005.
What are the common problems of the Toyota 1SZ-FE?
This engine is extremely sensitive to quality and especially to the timing of oil changes. There is a chain jump and a meeting of valves with pistons due to the wedge of the hydraulic tensioner. All known problems.
