Toyota 90999-92002 Hose, Vacuum

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To reduce hydrocarbon (HC) emissions, the Positive Crankcase Ventilation (PCV) system is used to route crankcase blow-by gas to the intake manifold for combustion in the cylinders. This process involves mixing the blow-by gases with incoming fresh air before burning them in the combustion chambers. It is vital to check the PCV hose for any damage and replace it as soon as possible. It is also crucial to inspect the hoses, connections, and gaskets that affect the PCV system, and tighten, repair, or replace any of these.

Inspect the hoses for clogs or dirt. If they are clogged, blow them out with compressed air and wipe them off. If they are cracked, torn, or deteriorated, they should be replaced.

To remove, detach the hose, unscrew the valve from the cover, then reattach the hose to the valve.

While there's no fixed maintenance interval, the PCV system's efficiency can decrease over time due to sludge buildup within the PCV valve and hoses. This buildup might result in leaking seals, impacting overall system performance.

The PCV valve and hose are located in the valve cover.

When purchasing a replacement valve, make sure it's for your particular vehicle and engine size. Also, compare the old valve with the new one to ensure they're the same.

To replace the PCV valve, you need to remove the intake manifold, detach the hose, unscrew the valve from the separator case, and replace it.

The PCV system consists of a fresh-air inlet hose between the air intake duct and the crankcase, the PCV valve, and the PCV hose (or crankcase ventilation hose) that connects the PCV valve to the intake manifold. The PCV valve is attached to a crankcase vent oil separator located underneath the intake manifold, which acts as a baffle to prevent oil from entering the PCV valve.

Attach a clean section of hose to the cylinder head side of the valve and blow through it. Then blow through the intake manifold side of the valve and verify that air passes through with difficulty.

TOYOTA DOESNT SELL BULK HOSE IF YOUR WANTING CUT TO FIT VACUUM LINE YOU WILL PROBABLY NEED TO GO TO A NAPA OR SOMETHING THEY SELL BY THE FOOT