Mercruiser manufactures a wrinkle of outboard engines ranging from Fourteen horsepower to exceeding than Three hundred horsepower. The beyond compare course to diagnose engine problems is to eliminate imaginable problems, such as stale petrol, one by one. Provided you acquire access to a Mercruiser scanner tool, a factor that interfaces with the Mercruiser outboard to diagnose problems, you can cause it to fix upon which parts of your tool are failing to operate.
Instructions
Basic Diagnostics
1. One's darnedest to activate your Mercruiser starter. Whether it Testament not turn to the "on" position, your battery or starter solenoids are broken.
2. Study the battery connectors and Glimmer plugs of your Mercruiser engine. Whether the connectors fit appropriately, they are not the complication. Whether the spark plugs are dented or cracked, transform them and pursuit to begin the Mercruiser again. Provided it much refuses to begin, the Glimmer plugs are not the botheration.
3. Stare at the odometer to decide the rpm standard. Whether the rpm ratio is not running at the suspected rush, a damaged propeller hub or boat backside are the most practicable problems. Stare at the propeller hub and boat bottom to check for damage. If they are not damaged, the rpm probably signifies a clogged air filter or broken carburetor.
4. Allow the engine to warm for about Ten minutes. Open the engine cover and check the temperature gauge of your engine. Hold an engine thermometer next to the engine to determine if the temperature gauge is displaying an accurate temperature. If it is not accurate, you must change the gauge. If the temperature is too high, but the gauge is accurate, you must change your water pump impellers.
5. Flush your fuel system if your boat doesn't start. Clogged fuel systems can keep carburetors from functioning properly. Fill the tank with new fuel. If the boat still won't start, the fuel system is not the problem.
Scanner Tool
If the scanner finds a problem, it displays an error message. Make a note of the message.9. Select "Output Tests" using the arrows.
7. Press the arrows to navigate to "PCM Functions" and press the button that reads "Yes."
8. Use the arrow keys to choose the "Auto Self Test" option and press the button that reads "Yes." Allow the scanner tool to scan the engine for problems.6. Open the engine case and locate the four-pin connector that attaches to the scanner tool. Plug the tool into the connector.
Select the appropriate test, such as Fuel Injectors or Tach Output and press "Yes." Allow the machine to scan the engine to determine if the part is running correctly.
