Here's a look inside Chrysler's Pentastar engine and how it works! In this video we teardown a 3.6L V6 Engine from a 2018 Jeep Wrangler that apparently failed to start. This engine features dual overhead cams with variable valve timing and aluminum construction. It also features exhaust gas recirculation (EGR) for emissions control.
The engine's overall construction consists of alot of plastic components (intake manifold, plenum, idler pulleys, valve covers, vacuum lines, etc). Inside, the camshaft wore down grooves due to the rocker arm sliding up against it. This is a common issue with this engine and can be due to lack of lubrication (this engine had sludge buildup due to lack of maintenance), thin oils, the rollers and hydraulic lifters failing, or material and heat treatment defects. Worn camshafts will cause poor performance or low compression because the valves cannot fully seat properly anymore, in addition to a loud tapping noise from the valve clearance being incorrect.
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0:00 Introduction
1:07 Teardown
12:30 Analysis
21:02 Conclusion
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