Advances in technology worked wonders for the internal combustion engine. With every new vehicle launched, there's a list of advancements to these controlled-explosion contraptions to harness maximum power and efficiency while keeping emissions in check. It's no secret that Ford doused their reinvented Bronco in these same innovations, but even this new-school hardware still falls victim to old-school by-products, like blow-by.
No matter the installed innovations, blow-by still remains the age-old nemesis of any engine's top-end components. The mix of fuel and oil vapors galvanize into stubborn carbon buildup, robbing the 2.7L of the power and efficiency the Ford engineers painstakingly worked into this engine. Yes, this engine utilizes a dual-injection system that will mitigate carbon buildup, but even port-injection vehicles suffer the same symptoms of unfiltered blow-by over time. So, even with factory-installed countermeasures, a catch can setup is still one of the best means of
