The remote oil tank can be removed from the boat for easy refilling. But there is more to the Optimax fuel system than that. These injectors are fed pressurized air from the belt driven air compressor on top of the motor. How does oil injection work on a jet ski?
A Quicksilver Ignition Key/Choke Assembly equipped with a warning horn must be used with this outboard. DO NOT run engine on straight gas when a prob-. First, oil has been leaking from the hose at the top of the reservoir and getting on the floor of the console, even though the hose appears to be fairly tightly connected and is in good shape. Are they only on one side and what's the reasoning for it? Results 1 to 15 of 16. If there is more than 1 quart of oil in the reservoir, then the problem may be in the oil injection pump. Models with Warning Module). Mercury outboard oil injection system diagram instructions. It's a lesser-known fact that this tank can serve multiple purposes on certain models.
Refer to Quicksilver Accessory Guide for correct components. Loosen bleed screw three to four turns and allow oil to flow from bleed hole. This pump is controlled by the throttle lever in most jet skis; the more throttle you apply, the more oil the pump delivers to the intake manifold, where it mixes with the gas. 5 Liter V6 - OptiMax Fuel & Air Flow Diagram. How to adjust oil injection on mercury outboard. Clogged or inoperative fuel injectors or direct injectors can cause similar issues along with the potential for creating a lean condition which could cause premature wear or engine damage. The fuel pressure regulator is held closed with a spring that requires 10 psi to force the diaphragm off of the diaphragm seat. The more throttle you apply, the more oil the pump delivers to the engine. How Does an Oil-Injected 2-Stroke Jet Ski Engine Work?
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. Module is faulty or oil level is too low. The motors were made from a 1. Mercury recommends using the CDS program along with the electronic pressure transducer to properly adjust fuel pressure after installing these regulator kits. Mercury outboard oil injection system diagramme. The chart below should help determine whether your fuel pressure regulator requires the 10psi or the 14psi spring. That's not depicted anywhere in the manual for the port side. The hoses that you see there in that picture are not the oil injection hoses, those are the bleed lines. Oil-injected jet skis became more prevalent in the early '90s while earlier models ran on premix.
Contrary to popular belief, jet ski oil pumps are quite reliable. 01-12-2017, 01:17 PM #9Member. Connect an ohmmeter between leads. This part of the Optimax operates very similarly to most modern fuel injection systems. As a rule of thumb, each oil-injected jet ski has a separate oil reservoir mounted somewhere inside the hull. Does this scenario suggest a failure of a particular component?
Mercury two-stroke outboard motors use an oil-fuel mixing system to provide mixing of two-stroke lubricating oil with the gasoline. Oil level in engine reservoir is full. Fuel Pressure - 108. It's safe to say that the oil pump is throttle-controlled on most jet skis, meaning that it's connected to the throttle lever with a cable.
0 document served to you from continuousWave. Because of the air injection on these motors they are also difficult to diagnose, especially for Techs that have not been trained on the specialized direct injection system. A Quicksilver Commander Series Side Mount Remote Control equipped with a warning horn must be used with this outboard. An air leak on the remote oil tank cap will prevent oil from moving from the remote oil tank to the oil reservoir. Mike1988 Sutphen 31 Race Boat(Great Adventure)1987 24 Skater with Simon Motorsports 335x motors/Taylor 15" Mids. Any idea what the bleed lines do and why only on one bank of cylinders(Starboard side and not on the port)? 1994 Merc 225 - 2-stroke oil pressure problem. Issues such as a worn diaphragm, or cracked spring in the fuel regulator, air regulator, or Tracker valve can cause rough idle, hard start or surging issues. The page has been accessed times. An air compressor failure would not only leave you stranded out on the water, but can also contaminate the fuel rail and DFI injectors.
On 2-stroke oil-injected Sea-Doos, this oil lubricates the rotary valve shaft gear; this is why you can find a second oil line coming from a Sea-Doo oil reservoir. The port side does have some bleed hose fittings but they are not by the cylinders like the starboard side. Quicksilver 2-Cycle Outboard Oil is recommended for this oil mixing system. Oil Injection System Troubleshooting Chart; (Models With Warning Module); Troubleshooting The Oil Injection System; Troubleshooting Chart - Mercury 75 Service Manual [Page 202. These plastic fuel tanks usually have a capacity of 0. With an empty reservoir, the pump will run dry, which results in an instant engine seizure. 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. By dwb212 in forum Technical DiscussionReplies: 3Last Post: 02-20-2006, 02:46 PM. If horn continues to sound on intermittent "beep", the warning.
This article first appeared March 18, 2006. If you have any questions, please contact us through e-mail at Please provide your engine model number to help confirm compatibility. This article will specifically focus on the Optimax fuel system, and the differences between the Optimax fuel system, and more conventional fuel systems. But it is always best to refill the oil tank before this warning appears.
Maybe a bad check valve somewhere? You will receive an email and a PayPal money request for the additional shipping charges at the email address provided. Refer to page 3C-9, "Oil Pump Test" to determine if oil pump is. Oil-injected 2-stroke jet skis utilize an oil-injection system designed to mix 2-stroke oil into the gas. You send us your complete fuel rail or rails including both the air and fuel injectors, and we will disassemble them and ultrasonically clean everything back to new. Using incorrect side mount remote control or ignition/choke. Kevin_From_NJ liked this post. SHIPPING: Additional shipping fees to Alaska, Hawaii, US Territories, or International Shipping will be calculated after checkout. URI: Last modified: Author: James W. Hebert. Many of these issues can be tough to find or catch before they become a problem, and DIY mechanics often overlook such items and cost you money. I find when I idle my 300x if I trim it up a little it helps with the puddling JMO. However, it has to be mentioned that the first jet skis utilized static oil pumps, which delivered the same amount of oil regardless of the engine's RPM.
115/135/150/175 & 175 ProXS - 2. Are you wondering what happens if the oil cable brakes on a jet ski? Let's get down to the nitty-gritty and talk about each in detail! If necessary, gently pinch the fuel line between the remote fuel line connector and the oil pump Tee fitting. Now that the fuel and air has been mixed the direct injectors spray the mixture directly from the cylinder head into the cylinder. If not, check tan wire between. Nal block on engine. If necessary, adjust link rod. If horn sounds a continuous "beep", the engine overheat sensor. Route remote oil tank hoses to starboard side of engine.
What is an Oil-Injected 2-Stroke Jet Ski? However, I'd like to figure out what's going on and fix it. If "beep" does not sound, then engine overheat sensor is. Are you wondering where the oil pump in a jet ski is? It is not uncommon to see these motors reach a few thousand hours with little repairs. Recently I've noticed a couple of problems that I suspect are related to pressure buildup in this system. If continuity exists, sen-. Rather than injecting fuel into the crankcase like the previous 2-stroke motors offered, this motor uses a combination of high pressure fuel and high pressure air to inject an atomized mixture of gas directly into the combustion chamber. Does Oil Injected Mean It's a 2-Stroke Jet Ski? Ous "beep", the warning module is faulty. Throttle operation on four cylinder engines and.
CAUTION--Engines with oil [mixing] must be run on a fuel mixture of 50:1 for the first 30 gallons of fuel. Will it leave the engine without lubrication? The first oil-injected 2-stroke jet skis appeared in the late '80s.
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