02
Jan
Yamaha Oil Injection Problem If the harness checks ok check the sensor in the tank in the boat. This means backing idle screw off all the way also.
Check the Fuel Connector.
Yamaha outboard oil injection troubleshooting. If you have a Yamaha tach with oil level indicators then make sure it is showing full oil level if middle bar is flashing it will not transfer oil and the oil level in remote oil tank is low or the sensor is bad. If tach is showing full oil level and wont transfer oil then the engine oil tank sensor may be bad. Yamaha Oil Injection Problem If the harness checks ok check the sensor in the tank in the boat.
Sometimes the gauge will show yellow even if tank is full but not all the time. If this sensor goes bad the pump will not pump unless the switch is used this is to make boater notice that hes almost out of oil and to refill or get back to shore. Thatll tell you the engine is getting oil.
The Yamaha oil injection system is completely mechanical and its very reliable. If you ever have any problems its probably going to be with the pump system moving oil from the external oil tank into the small tank under the engine cowling. If the engines oil pressure is low the ignitioninjection of both cylinders 1 and 4 is cut however the ignitioninjection of cylinders 2 and 3 is not cut.
Once the oil pressure can be increased to 2175 psi 150 kPa or higher the warning can be cancelled by decreasing the throttle opening angle to less than 2 and turning the ignition key to the OFF position. Troubleshooting Yamahas Precision Blend oil system is easy. We show you how More than a mere convenience for boaters automatic oil injection helps two-stroke outboards run at peak performance.
Remember to check the basics. To start and run a Yamaha outboard needs a properly timed ignition and correct airfuel ratio. Also be sure to check if the emergency shutoff switch cap is in place.
If it still wont crank check the neutral switch. First time trying to bleed air from a 2-stroke oil injection pump on a Yamaha 40hp 3 cylinder. The oil reservoir is inside the cowling.
Im puzzled by there being two oil lines between this reservoir and the oil injection pump. Photo of the reservoir attached below. Also a rough diagram to show the two oil lines.
In the diagram line B is the main feed of oil from the bottom of the reservoir to the oil. LIT-18616-02-65 Service Repair Manual Application. 2004-2006 Yamaha Marine Outboard 40HP 40-HP 50HP 50-HP 4-Stroke Engines.
Exact model name 40VETO 50HETO Both USA and CANADA models covered 40TR 50TR 40C-50C. LIT-18616-02-66 Service Repair Manual Application. 2004 2005 2006 Yamaha Marine Outboard 70HP 70-HP 2-Stroke Engines.
Yamaha Outboard Troubleshooting Forum. So many queries and questions from frustrated Yamaha outboard owners. Many are simply looking for a Yamaha outboard troubleshooting forum and Yamaha outboard motor problems solutions.
The Yamaha outboard forum will hopefully help with resolving common problems with Yamaha outboards. If you find water in your fuel you may want to check that the pump is in good condition. You can perform a Yamaha outboard fuel pump test by removing the spark plug wire boot from the spark plug and then removing the spark plug with a plug socket and wrench.
Attach a compression gauge into the spark plug socket. Another important note about removing the oil injection on any outboard is when mixing at 501 that is the ratio the engine requires at high speed running. At idle and low speeds the mixture is more like 1001.
If you do allot of idleing and trolling the cylinders can coke up with carbon and many more fouled plugs. The correct adjustment for this specific motor is none at all. The oil pump lever should contact the stop when fully closed.
This is the procedure directly from the yamaha manual. 1disconnect the oil pump link rod joint. 2fully close throttle valves.
This means backing idle screw off all the way also. If you want to premix you would strip the oil injection system off you would have to make a block off plate out of aluminum for where the oil pump was and then premix at 50 to 1. However the oil injection system is fairly reliable and personally I would find the gremlin you got here and fix it and continue to use it.
The Yamaha outboard alarm system can fail just like any other system on your outboard. Troubleshooting the alarm system includes making sure the horn associated with the alarm works making sure the warning light comes on and the horn sounds when the oil level drops below acceptable levels and ensuring the warning sounds if the engine overheats. Yamaha offers consumers great variety with its four-stroke outboard motor lineup.
In 2011 alone the company featured 10 different four-stroke makes with dozens of different models. Each had unique engineering specs power capabilities and intended uses. But despite this great variety between different models.
Troubleshooting Outboard Fuel Lines When youre checking the fuel filters give the fuel pumps inlet and outlet fuel lines a close inspection too. If you see any leaks or there are worn or damaged fuel pipes you should replace them immediately. Yamaha Outboard Oil Injection Adjustment atvs boats pwcs snowmobiles amp trailers atvs boats pwcs carburetor rebuild amp repair help for mercruiser sterndrives yamaha 50 owner s manual pdf download gasoline direct injection wikipedia yamaha 30d manuals outboards 40 to 30 hp midrange yamaha outboards suzuki marine product lines outboard.
I have a 200 Hp 2 stroke Yamaha OX 66 Saltwater seriesI bought the boat and motor new in 2000The dealer told me to fill the oil tank with oil and to also add a 50 to 1 premix to the gas for the first 10 hrs of run timeLong story shortafter 10 hours I relied only on the oil injectionIts 15 years old now and runs like a new oneIt has a. EMU25060 ZMU01690 Read this owners manual carefully before operating your outboard motor. 65W-9-1B Hyoshi 42205 114 PM Page 2 2019 Yamaha Motor Corporation USA.
However with most oil injection systems this is a wrong diagnosis. It would seem that an outboard motor can damage itself by running lean but in actuality an engine wearing down due to running lean is not related to oil injection. Bearing failure and seizing in engines are oil related.
Running lean is a carburetion issue. Do give advice for Yamaha outboards too. I want to do away with oil injection on 1998 150 hp.
What do I need to disconnect by the way of alarms. Ive got tanks out and need plug hoses what else. Arrow is on yellow oil alarm on controls when I turn key on.
Wayne Hixson Elberta Ala. Fuel fittings such as this one can corrode and clog up causing significant performance issues in outboard engines. Photo courtesy of Yamaha.
Check the Fuel Connector. Another trouble spot in the fuel delivery departmentif youve got a portable tank setupare the snap-in connectors that attach the fuel line to your outboard.