Engine Suzuki H20A

The Suzuki H20A 2.0-liter V6 engine was produced by a Japanese company from 1994 to 1998 and was installed only on the popular Escudo SUV, also known as the Vitara. This power unit has a number of common parts on the block with Mazda KF and Toyota 1VZ-FE engines.

Engines of the H-series: H20A, H25A, H27A.

As part of a consortium of Suzuki, Toyota, Mazda designed a line of V6 engines with a 60° camber angle, so the H20A shares many similarities with the Mazda KF and Toyota 1VZ-FE. The design was progressive for that time: an aluminum block with cast-iron sleeves, a pair of DOHC cylinder heads with hydraulic lifters, and a rather sophisticated timing chain drive. This unit existed in the only modification with distributed fuel injection.

Specifications

Production years 1994-1998
Displacement, cc 1998
Fuel system distributed injection
Power output, hp 136 – 145
Torque output, Nm 172 – 183
Cylinder block aluminum V6
Block head aluminum 24v
Cylinder bore, mm 78
Piston stroke, mm 69.7
Compression ratio 9.5
Hydraulic lifters yes
Timing drive chain
Turbocharging no
Recommended engine oil 5W-30, 5W-40
Engine oil capacity, liter 6.2
Fuel type petrol
Euro standards EURO 2
Fuel consumption, L/100 km (for Suzuki Escudo 1997)
— city
— highway
— combined
12.9
8.2
10.6
Engine lifespan, km ~350 000

The engine was installed on:

  • Suzuki Escudo 1 (ET) in 1994 – 1998;
  • Suzuki Vitara 1 (ET) in 1994 – 1998.

Disadvantages of the Suzuki H20A engine

  • The gas distribution mechanism here consists of three chains and three hydraulic tensioners, which are very demanding on the quality of the oil and, in particular, on the procedure for replacing it. Saving often leads to a tensioner wedge, chain jump and motor failure.
  • For the same reason, the oil catcher labyrinth of the valve covers quickly clogs up, and here it serves as part of the crankcase ventilation system. This is the main culprit of the oil burner. An excellent marker of severe grease contamination is the knocking of hydraulic lifters.
  • Separately, it is worth highlighting regular oil leaks, since here they are a real disaster. The weak points include the front cover of the engine, the front-rear crankshaft oil seals and the sealing rings of the oil channel at the junction of the block with the crankcase and the crankcase with the sump.
  • Also, the mass air flow and throttle position sensors often fail here, and the EGR valve clogs up quite quickly or its supply pipe cracks.

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