Removing HPDI fuel injectors from the cylinder heads can be a struggle, particularly in saltwater applications. Corrosion can build up between the injector and the pocket in the cylinder head. To block corrosion build-up and ease future removal, apply a light coat of Yamaha WR#2 waterproof grease (pn 90790-74046-00) to the metal injector body when […]
Category: HPDI Service Tips
Yamaha Precision Blend System Troubleshooting
Let’s look at some common complaints for the Precision Blend System or PBS. “… the oil pump does not run … system will not transfer oil to the engine oil tank ….” There are a couple of checks /possibilities here: • The first check should be a visual one. Look for corroded or damaged wires […]
HPDI Fuel Injector Gasket Installation
Many times when the HPDI Cylinder Head Side Gasket pictured below are removed for injector service, not much attention is paid to the orientation of the gaskets until the new ones need to be installed. When the injectors are removed from the cylinder head, the old injector gasket material needs to be cleaned from the […]