The Suzuki M16A 1.6-liter gasoline engine was first introduced by the company in 2001, and it is still used in popular Japanese crossovers like the SX4 and Vitara. There were several variations of this motor, including a sports version for the Swift Sport.
M-series engines: M13A, M15A, M16A, and M18A.
A 1.6-liter engine joined the M-series family of gasoline engines in 2001. It features a timing chain, distributed fuel injection, a 16-valve cylinder head without hydraulic lifters, and an aluminum cylinder block with cast-iron liners and an open cooling jacket. Liana received two versions of the initial unit without a geometry change system: one with a compression ratio of 9.7 and 102 horsepower, and another with a compression ratio of 10.5, 106 horsepower, and 144 Nm.
The Grand Vitara debuted the second generation of the engine in 2005, complete with a plastic intake manifold and a phase shifter on the intake. He produced 107 horsepower and 145 Nm at a compression ratio of 11.1.
The SX4 crossover or a comparable Fiat Sedici has had a version with a phase regulator installed since 2006. In 2009, the redesigned SX4 received a new modification that included an intake manifold with an IMT geometry change system and individual coils rather than two twin ones. This power unit developed from 150 to 156 Nm and from 112 to 120 horsepower at a compression ratio of 11.
The current motor first debuted on the second generation SX4 in 2013, followed by the Vitara 4. A new engine with a lightweight piston that developed from 117 to 120 horsepower and 156 Nm with a compression ratio of 11 was concealed under the same plastic cover as its predecessor.
The sports version of this device, which was installed on the Swift Sport, is worth discussing separately. Such an engine produced 125 horsepower and 148 Nm in the first generation or 136 horsepower and 160 Nm in the second thanks to evil camshafts, thin piston rings, and a different exhaust manifold.
Specifications
| Production years | since 2001 |
| Displacement, cc | 1586 |
| Fuel system | distributed injection |
| Power output, hp | 102 – 136 |
| Torque output, Nm | 144 – 160 |
| Cylinder block | aluminum R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 78 |
| Piston stroke, mm | 83 |
| Compression ratio | 9.7 – 11.1 |
| Hydraulic lifters | no |
| Timing drive | chain |
| Turbocharging | no |
| Recommended engine oil | 5W-30, 5W-40 |
| Engine oil capacity, liter | 4.2 |
| Fuel type | petrol |
| Euro standards | EURO 4/5 |
| Fuel consumption, L/100 km (for Suzuki SX4 2010) — city — highway — combined |
8.5 5.8 6.8 |
| Engine lifespan, km | ~400 000 |
| Weight, kg | 97 (without attachments) |
The engine was installed on:
- Suzuki Grand Vitara 2 (JT) in 2005 – 2016;
- Suzuki Liana 1 (ER) in 2001 – 2007;
- Suzuki SX4 1 (GY) in 2006 – 2014; SX4 2 (JY) since 2013;
- Suzuki Swift 3 (MZ) in 2004 – 2010; Swift 4 (NZ) in 2011 – 2017;
- Suzuki Vitara 4 (LY) since 2015;
- Fiat Sedici I (FY) in 2006 – 2014.
Disadvantages of the Suzuki M16A engine
Although this motor is dependable and clever, an oil burner is frequently discovered after 200,000 kilometers. The cause could be increased seat and valve guide wear in addition to hardened valve stem seals and stuck rings. It has a weak cylinder head.
The aluminum unit frequently ruptures the cylinder head gasket because it is terrified of overheating. After 200,000 kilometers, the block’s cast-iron sleeves may sink, making the situation worse.
The floating engine idle speeds are the biggest of the minor issues. Examine the EGR valve; it might be clogged if cleaning the throttle assembly is ineffective.
Here, low reliability sets the sensors apart, particularly the ignition coil and crankshaft-camshaft positions, which were dual before 2006 and individual after.
The catalyst and power unit supports are not very useful, and leaks are frequently caused by an oil pressure sensor. Additionally, remember to change the valves every 30,000 kilometers.