There is no oil injection in the modern sense of two-cycle engine oiling. Pressure Differential 14. Eventually, this mixture is sucked into the cylinders. Both of these symptoms suggest to me that there must be fairly significant pressure remaining in the 2-stroke system after we turn the engine off for the day. Using incorrect side mount remote control or ignition/choke. Lem may be in the oil injection pump. Route remote oil tank hoses to starboard side of engine. The oil [mixing] pump is driven by the crankshaft and is connected to the throttle linkage for metering the varied flow of oil per engine RPM. 01-13-2017, 05:38 PM #15. Be run by connecting a remote fuel tank of 50:1. gas and oil mixture to engine. Mercury outboard oil injection system diagram. How Does an Oil-Injected 2-Stroke Jet Ski Engine Work? An air leak at the engine reservoir will cause oil spillage. The motion sensor will sound the warning horn if the drive system for the [oil] pump becomes inoperative. As a temporary fix, I can loosen one of the filler caps on the oil reservoir under the console when we finish running in order to let off pressure.
The air pressure is less than the fuel, so that the fuel can overcome the air pressure and be properly mixed when injected into the cylinders. The 3 lines going into the sides of the cylinders are depicted in this photo. How does oil injection work on a jet ski? Originally introduced in 1995, the Optimax motor was made and sold until 2018, depending on your location the motors were sold under both the Mercury and Mariner names. The oil [system] warning sound is an intermittent BEEP BEEP BEEP, etc. Ous "beep", the warning module is faulty. This listing is for a New WSM Mercury & Mariner L3/L4 75-125 HP Oil Injection Block-Off Kit. The motors were made from a 1. How does oil injection work on a 2 stroke mercury outboard. 5 Liter V6 - OptiMax Fuel & Air Flow Diagram. Last edited by Sea2jet; 01-07-2017 at 07:03 PM. This article first appeared March 18, 2006. DO NOT run engine on straight gas when a prob-.
01-12-2017, 01:17 PM #9Member. The heart of a jet ski's oil-injection system is arguably the oil pump, driven by the engine with gears. Fuel Pressure - 108.
5L Optimax Fuel Flow Diagram. An air compressor failure would not only leave you stranded out on the water, but can also contaminate the fuel rail and DFI injectors. This is because the engine requires less oil at idle and more at open throttle. The result is the same as if the oil and gasoline were pre-mixed in a tank, except there is an advantage that the mixing ratio can be varied according to engine operating speed by linking the pump to the throttle position levers. NOTE: If air bubbles persist, they can be purged out of the hose by removing link rod and rotating the pump air full clockwise while operating engine at 1, 000 to 1, 500-RPM. The air and fuel injectors are then tested using our Bosch certified equipment, and also ultrasonically cleaned. CAUTION--If an electric fuel pump is to be used on engines with oil [mixing], the fuel pressure at the engine must not exceed 2-PSIG. These reasons and more are why we always recommend servicing and repairing your Optimax at a Mercury Marine Certified repair center or dealer. Does this scenario suggest a failure of a particular component? The better the atomization, the more efficiently fuel can burn, thus giving exceptional power and fuel economy. Oil Injection System Troubleshooting Chart; (Models With Warning Module); Troubleshooting The Oil Injection System; Troubleshooting Chart - Mercury 75 Service Manual [Page 202. Gauges/Warning light. A fuel pressure regulator is installed on the fuel rail to relieve excess pressure, the fuel that is let out by this regulator circulates back into the VST tank.
Each time the key switch is turned from the OFF to ON position (engine not running) the warning horn will sound momentarily. As a rule of thumb, each oil-injected jet ski has a separate oil reservoir mounted somewhere inside the hull. Mercury Tech: 300X oil pump hose routing??? Yes, if a vintage jet ski is labeled "oil-injected, " it's more than likely a 2-stroke oil-injected model. Should be no continuity through sensor. This gear-driven oil pump forces oil into the intake manifold, where the gas mixes with the oil. From there the fuel flows to the fuel rail where it is cooled by sea water and delivered to the fuel injectors. Module is faulty or oil level is too low. The backside of the diaphragm is fed with regulated air rail pressure, as the air rail pressure increases, the fuel pressure needed to open the regulator increases equally. Thanks for the explanation Kevin. How Does Oil Injection Work on a Jet Ski? [Explained. I find when I idle my 300x if I trim it up a little it helps with the puddling JMO. If you want to find out more about this system, you've come to the right place.
Are you wondering where the oil pump in a jet ski is? What Year Did Sea-Doo Start Oil-Injection? Inline 3 Cylinder 1. Mercury outboard oil injection system diagrammes. In contrast, the first oil-injected Sea-Doo was the 1988 SP featuring a 580cc, oil-injected twin engine. However, I'd like to figure out what's going on and fix it. Refer to page 3C-9, "Oil Pump Test" to determine if oil pump is. DISCOVER 2023 PWC MODELS Kawasaki, Sea-Doo, Yamaha, Krash…. Direct Injector Resistance - 1.
If oil level is approximately one. The warning horn sounds in a pulsating manner, stop. All of these things in combination are what make the Mercury Optimax fuel efficient and powerful.