Jaguar Engine Teardown: Overheating Can Be Deadly

2017 Jaguar F-Pace Engine w/ 62k Miles

When Jaguar-Land Rover decided to reduce the size of the 5.0-liter AJ V8 to a supercharged 3.0-liter V6 in an effort to save money, some suggested that the V6 was severely deficient in quality. In fact, the V6 kept 75% of the V8’s components, incorporating the engine block, and our favorite engine specialist is back again, this time to put his knowledge to the test and see if in truth the design were truly faulty by working on a 2017 Jaguar F-Pace.

Eric is responsible for the majority of takedowns we’ve highlighted in the past, ranging from something as minimalist yet powerful as a 1.0-L three-cylinder EcoBoost all the way up to an immense 5.9-quote Cummins diesel. His newest endeavor involves a V6 with 62,000 miles on it.

It is believed that the motor may be suffering from overheating problems. Eric theorized that this could potentially arise due to a lack of upkeep as the vehicle had been taken before being retrieved. It cannot be overlooked that thieves would not be inclined to invest money in someone else’s automobile, correct?

JUNK at Just 62K Miles! Jaguar 3.0 Supercharged AJ V6 Engine Teardown

Upon an initial examination, Eric observed deficiencies in the coolant hoses, which might be a result of severe temperature. In spite of the spark plugs seeming moderately decent, two ignition coils were molten, overtly confirming his theory that the engine was overheating.

Eric then proceeded to take out the supercharger assemblage and that is when he noticed the melted cooling tubes. Once this was done, gaining access to the valve covers was no longer an issue. Pulling off the covers revealed to him that, other than the horrible stench which was emanating from the area, the camshaft assemblies were in fairly decent shape. He was also happy to find out that the right-hand side of this V6 appeared to be in perfect condition.

Exposing the fastenings, Eric took off the lower valve timing protector and exclaimed the inner parts appeared to be in decent condition. Undoing the camshaft unit was the ultimate thing to finalize the disassembly on the cylinder head arrangement.

Upon inspecting the engine block, it was immediately evident that there were several burned marks present. This finding only further validated the initial conclusion that the engine had been running too hot. Eric proceeded to take out the oil pan, and upon removing the pistons, he noticed that they too had been “barbecued” from the scorches.

Eric reached the conclusion that downsizing isn’t fundamentally a bad concept regarding design. Ignoring something as ordinary as engine coolant could lead to any engine failing; however, this won’t be a concern for prospective Jaguar proprietors due to the company’s plan to go exclusively electrical by 2025 – one of the initial major automakers to make such a move.