Honda Passport coolant leak from small hose under intake manifold on Honda Passport

Some Honda Passport owners report experiencing coolant leaks from a small hose under the intake manifold, often due to loose hose connections, a broken radiator, or a failed water pump. These leaks can also be attributed to gasket issues or problems with the manifold itself, necessitating a visual inspection and possibly the use of a pressure tester. Additionally, owners are advised to check for coolant lines beneath the intake manifold, as leaks may occur from the rubber O ring or coolant hoses connected to the side of the block. Some experience intermittent leaks from pipes and hoses under the intake manifold, which can lead to coolant contamination in the engine oil or spark plugs. Furthermore, leaks in the throttle body coolant hoses may leave a blue-green residue, indicating the presence of a leak. To effectively address these issues, it is crucial for owners to conduct thorough inspections and consider replacing affected hoses, gaskets, or the manifold as needed.