Gasoline Engines and Water Intrusion （汽油发动机和水侵入）.pdfVIP

No. 2001-13 WARRANTY INFORMATION SERVICE INFORMATION Gasoline Engines and Water Intrusion Models All gasoline 4, V6 and V8 MerCruiser engines. Situation This bulletin is meant to help marine dealers troubleshoot engines, in or out of the warranty period, that have water intrusion. Marine engines are built to perform in harsh conditions, including saltwater. The vast major- ity of these engines perform reliably. Occasionally, an engine inadvertently will have water enter it and this water has the potential to cause damage. This water can be found in the oil or on top of the pistons. Rarely is water found in both locations. Sometimes, water is found inside the exhaust manifold but not inside the engine. To properly diagnose the failure, you need to know where the water was found. 1. Quiz the boat owner when they first report this problem to your dealership about who, what, when, where and how they first noticed the problem. Find out as much information as possible about what occurred just prior to the boater discovering the problem. 2. Ask if the boat sank or had a lot of water in the bilge. a. If this has happened to the boat, drying all electrical components and getting the en- gine running as soon as possible after getting the water out of the bilge is critical. Once air (oxygen) comes in contact with the submerged components, corrosion will start. Attach this informa