Lincoln 3L3Z-6758-BA Tube Assembly

The high temperatures under the hood of your vehicle's engine, accessory, and emission systems can cause material degradation so rubber and plastic hoses must be regularly inspected. To avoid possible leaks check that clamps are properly tensioned and ensure there has been no expansion or hardening at fittings. The PCV system hose should also be checked for damage such as cracks or leaks. If necessary clear any blockages within the hose using solvent. When inspecting vacuum hoses make sure they match material specifications as well as examine plastic T-fittings for cracks and hose distortion. Detect leaks by using a small piece of vacuum hose like a stethoscope. When checking flexible fuel lines look for chafing, deterioration, and cracks form from misuse or age; use hoses designed for your fuel injection system to replace them if needed. Screw clamps must replace spring-type clips during the replacement process. Also, check metal lines for bending, crimping, or cracks.

When multiple vacuum hoses are removed, label hoses and fittings to ensure proper reassembly.

The PCV system hose carries crankcase blow-by gas to the intake manifold to reduce emissions. It should be examined for damage, cracks, leaks, and obstructions, which should be cleared if found.