GM X20SED Engine Problems And Reliability

The X20SED engine belongs to the gasoline type, has a volume of 2 liters. The power of this in-line 4-cylinder internal combustion engine is approximately 121-133 l / s, the torque is in the range of 175-185 Nm.

The assembly of the motor took place by the Daewoo automobile concern from 1997 to 2008. The engine has been installed on various Daewoo and Chevrolet models, including lineups such as Leganza, Nubira and Lacetti.

This power unit is equipped with a distributed fuel injection system and has a timing belt drive. The cylinder block is made of cast iron, the cylinder head is aluminum. Installed hydraulic lifters.

Advantages of ICE

Car enthusiasts generally speak well of the X20SED engine, calling it comfortable and successful in terms of price-quality ratio. The internal combustion engine is unpretentious, quiet and quite powerful. Well suited for Russian winters, because. starts without problems at low temperatures. The number of serious problems is kept to a minimum.

Prospects for tuning

Chip tuning is considered the simplest option. Other options are possible, but will be very expensive. In such a situation, it is more reasonable to replace the X20SED engine with a larger displacement one.

Applicability of X20SED engine

  • Chevrolet : Lacetti (2004-2008), Evanda (2004-2006)
  • Daewoo : Leganza (1997-2008), Nubira (1997-2003), Lacetti (2002-2007), Magnus (2000-2006), Tacuma (2000-2008)

X20SED engine Specifications

Volume (cm3)1998
Power (hp)121-133
Torque175-185 Nm
Timing driveBelt
Environmental classEuro 2
Fuel typeGasoline AI-92
ICE featuresDOHC
Supply systemDistribution injection
hydraulic liftersYes
Cylinder blockCast iron R4
cylinder headaluminum 16v
Cylinder diameter86 mm
piston stroke86 mm
Compression ratio9.6
Phase regulatorNo
Engine oil4.25 l 5W-30
Average resource350 000 km

Disadvantages and problems of the X20SED engine

The most serious disadvantage of the X20SED engine is the high cost of repairs in the event of a breakdown. Drivers of cars with this unit under the hood prefer to refuse major repairs. Buying a used motor is much cheaper than spending huge sums on a major overhaul.

High-quality and timely maintenance will help prevent serious malfunctions. In particular, we must not forget about replacing the timing belt, which has a small resource – only 60,000 km.

Leaking oil is a common problem. Idle speeds may also begin to float if the IAC or crankcase ventilation is contaminated. The camshaft position sensor sometimes malfunctions, as does the exhaust manifold. The latter is not very reliable, it can burst.

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