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Here's a look inside the 1.4L Turbocharged 4 cylinder U14NFT engine and how it works!

In this video, we teardown a failed engine from a first generation Chevrolet Cruze. This inline 4 engine features dual variable valve timing driven by a timing chain, an iron block, turbo charger mounted on the exhaust, plastic valve cover, mechanical water pump and thermostat.

Common issues with these engines include the cooling components - as in this case - the head gasket. Other failures include the water pump, thermostat housing which is made of plastic, and the PCV system, which is integrated in the valve cover, requiring full replacement when worn. The ignition coil is one piece and must be replaced entirely when failed, as opposed to an individual coil on plug design.

In this case, the head gasket leaked coolant into the combustion chamber. Since liquid is not compressible, the piston top exploded, causing catastrophic damage to the surrounding components, including punching a hole in the iron block. There was also damage found in the timing system, and a lot of carnage in the oil pan. These engines are not known to be reliable as a result of many failure modes.

For the 2.2L Ecotec engine, please see the teardown here:


0:00 Introduction
0:56 Teardown
10.03 How it works
13:24 Conclusion

Here's where you can get the special tools used in this teardown:
E-Torx socket set:
(US)
(Canada)

Torx socket set:
(US)
(Canada)

This is the Camera I use:
(US)
(Canada)

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