The Ford Excursion PCV Hose directs pressurized vapors from the crankcase back into the intake for reburning in the engine, which reduces harmful emissions and prevents oil seal damage. In serving as a flexible connector between the PCV valve and the crankcase port, the hose allows the valve's pintle to smoothly meter airflow, which helps large Excursion engines maintain a balanced air fuel mix and steady economy. Over the model years, a driver side hose and a passenger side hose appeared, each molded to route around Ford components and protect the line from heat. The PCV Hose must remain airtight to prevent leaks. Each Ford PCV Hose is a molded rubber that resists oil softening; however, their shape and length differ by side. Therefore, it is essential to select the correct replacement Ford PCV Hose. The optimal option remains the direct fit versions, as a universal piece can kink and affect flow, which could cause rough idle or higher emissions in an Excursion. If your PCV Hose is cracked, replace it without delay. A leak will allow unmetered air to enter the intake manifold, which can foul the valve. A problem here may cause the Ford powertrain warning light to glow. Every Excursion owner knows that a sound PCV Hose is cheap protection for the truck's big motor.
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