This helpful YouTube video by Succstrat explains what might be affecting your ability to get going. Any ideas? Last time it stalled running at 1200 rpms. A bigger pump can overcome a small leak. ‘Priming’ the pump simply means filling it with water. I then talked to one of the builders of my bass boat (Falcon). Also an outboards fuel pump is not designed to draw fuel from a hose over 6 feet long so if you have relocated the tank for storage or convenience and exceeded that that could be a problem. Most pumps will have a primer cap, which should be filled before the pump is turned on. Some trips the motor would run fine and the net time out you would have to pump the fuel bulb constantly to keep it running. charliep. But blockages don’t cure themselves. In under two minutes, you could learn how to solve the problem for good! Asked by Wiki User. Thanks, John. Can’t keep your outboard motor running? 380 2. ? The motor seems to be running fine, but I have never seen this before. There are several methods to troubleshooting a stalling outboard engine. If you continue to feel like your heart is beating too slowly for … One day after a trouble filled trip, I decided that I waS GOING TO FIND THE PROBLEM OR … Nothing related to that has to wait for the next morning; the lift pump is not … It definitely does not appear to have a squeeze bulb so that can be ruled out. The tech that installed the unit did not use a metal clamp on the hoses and it was leaking and drawing air so I replaced it and the output side … Post Jul 09, 2012 #2 2012-07-09T14:16. Gender: Posts: 193; White 00 Nitro DX 90 merc; Gas primer bulb going flat! If you are having a problem starting the motor after it sits for a while after running that sounds like "Heat Soak" which means the gas left in the engine is flashing off or evaporating after you shut the … I still did not get optimal primer bulb tension and the motor was not running great, so I inspected the hoses from that point to the input side of the new pump/vapor unit (they have been redesigned by Carter to be all one unit now) and found a leak at the fuel line input side. … Will it keep running if you pump the bulb on the fuel line? Low quality primer bulbs are often the cause of not being able to provide the outboard with enough fuel pressure for starting. 380 2. charliep. This forces air out of the pump and creates a vacuum, allowing water to move through it once the pump is powered on. Most small engines will not start if the carburetor is dry. I would have more hours on it but it keeps failing me. Pic courtesy:google Purpose: Most outboard motors have only a simple diaphragm fuel pump that operates from engine vacuum. Should the primer bulb be mounted near the tank, or closer to the engine, or it doesn’t matter? What makes an outboard boat motor surge and not run to its full power? The purpose of the primer bulb is to prime the fuel lift pump with fuel. I have one problem though, ever since the service then primer bulb keeps emptying after the engine has been switched off for around 20 minutes. I checked everything I could think of ,o-rings, checkvalve, fuel pump, hose clamps, gaskets everything to do with the fuel delivery system. He suggested either adding an inline pump or a larger primer bulb. It generally starts with a partial blockage, where playing around with the fuel hose and pumping the primer bulb will get the motor to start or keep it running. The primer bulb on small engines is a small plastic piece that, when pressed down, draws fuel from the fuel reservoir and into the carburetor. Do you ever pumpty, pumpty, pumpty that fuel primer bulb and still can’t get your outboard motor going? Either the lift pump has failed, the boat is out of fuel or there is an air leak or blockage somewhere in the fuel lines running fuel from the tank to the engine. As long as the pump is not putting out over 7psi there is no need for return. As the pandemic continues, human resources departments are adjusting to keep businesses running and address employee needs. Engine starts to run faster, then dies without a couple of primer bulb pumps. View Full Version : 40 hp evinrude runs briefly. Checked … The fuel pump has 2 valves in the pump to keep fuel flowing in one direction when the valves get weak or bad the pump will not pump properly and cause loss of prime starving the engine for fuel. Click to see full answer Also to know is, how does a gas primer bulb work? Same problem. This happens every time when i am running at 3000-4000 rpm's. Replaced fuel filter water separator and same problem. Would not start. Primer bulb had gas in it.took 1 pump to make hard. If the fuel pump has failed, the primer bulb can be constantly squeezed in order to provide the outboard with fuel while running. Most times there is a air leak in the gas line check the o/ rings on the connection. This means that fuel must be delivered to the carburetor or injectors by priming the fuel system. So the engine needs the fuel pump rebuilt/replaced. I believe my engine is moving a little more fuel than the 4 strokes, about 25-27 GPH, and after hearing his story, I am wondering if the fuel bulb is not capable of supporting the flow or PSI of the fuel passing through. Why … Finally, he explained that they don't use anti siphon valves, just fuel demand valves to prevent fuel flooding the engine. Fuel pump rebuild is very easy, and the kit is $20-25. I intend to check the fuel pressure as soon as I can find time to actually troubleshoot rather than go boating plus I am going to replace the gas line too. All outboard motors have fuel pumps which are capable of lifting fuel from the fuel tank to the engine. The question I have is when running (about 3500 rpm) my buddy notice the gas primer bulb was sucked in flat. The … We explore the three big issues that can be causing the problem as well as why outboard run out of fuel. Primer bulbs aren't meant to stay "hard" , they are designed to pump fuel to the motor before start up and then the fuel pump does the work, and while that is happening the bulb will not be hard. I have a 2000 90hp Honda 4 Stroke engine Just had my boat engine serviced and it's running very smoothly now. I recall i read in the fuel system part of a manual that the bulb should be located near the tank. You should have fuel in the bulb when running. Some outboards have a manual primer with three modes: OFF, ENRICHED, and PRIME. Mophorn Boat Throttle Control 881170A3 Boat Control Box with 8 Pins … If the motor will start and keep running just fine all of the time when using the primer ball (with fuel pressure is being maintained on the FI rail), but not when the lift pump is operating, then I would suspect a vacuum leak somewhere between the primer ball and the inlet to the lift pump. bunky1940. Not an issue for the first 2-1/2 hrs.the fuel lines were replaced when new motor was installed April 2018. After spending their summer in the Walt Disney World bubble, NBA players are now giving back to the Cast Member community. Your outboard may be stalling & running out of fuel due to three issues. If you do not, the check valve in the primer is bad. You ... but you can substitute for the LP pump with your primer bulb - if the problem is that the LP pump has let the VST run empty, you can immediately fill it yourself with the bulb - in which case the engine should start. I have a 15 hp Gamefisher outboard.I have rebuilt the fuel pump and the carburetor (new needle & seat new seals and hoses.I have had it running perfect for as long as 15 minuets.,but it always seems to die out.when I pump the primer bulb on the fuel line gas will squirt out of the small overflow hole on the side of the carburetor. It is also recommended to fill the feed pipe … Other uses can result in injury to the operator or damage to the outboard motor and other property. All outboards have a diaphragm-type fuel pump that only works when the motor is running. With all that said, anyone have … The use of … You should have fuel in the bulb when running. Since the fuel is getting sucked through the line, air leaks in instead of fuel leaking out. Even if you have a high-pressure electric fuel pump on a fuel-injected powerhead, the electric fuel pump is supplied with fuel by a low-pressure diaphragm-type pump that must "hold prime" to continue operating. Same problem. Pressing the primer bulb creates a vacuum … Boat Repair Forum > Outboard Motors Forum > Johnson Evinrude Outboard Forum > 40 hp evinrude runs briefly. He only recalls two cases. It is essentially not seating and drawing air in through the discharge port. The primer bulb gets soft but not flat. Has anyone experienced this? I found nothing that would indicate a problem. This is the OFF position. The fuel lift pump on most outboard motors operates from vacuum pulses derived from the crankcase. FILE - In this Nov. 17, 2020, file photo, Buffalo running back Jaret Patterson, left, carries the ball while Bowling Green linebacker Darren Anders (37) and defensive lineman Ja'von Lyons (56) close in during the first half of an NCAA college football game in Bowling Green, Ohio. Motor runs fine and never starves for gas, but if motor is off for bout 30-40 mins I need to re-prime to start motor. If it does not, the … I have determined that it does have an electric fuel pump mounted on the outboard. « on: September 10, 2008, 01:04:23 PM » Gas primer bulb keeps going flat if motor doesn't run. The primer bulb on every hose i’ve had is located a foot or so from the tank. No. The carburetor is a part of the engine that mixes fuel and air together to make a combustion. I did that with a 70 hp … Medications can help prevent the neurological and endocrinological causes of syncope. Human resources staff altering practices to keep business running smoothly amid the pandemic | INFORUM inforum.com - Thomas Evanella. I replaced a few clamps where the various gas hoses attach to the … Yamaha Outboard Forum; If this is your first visit, be sure to check out the FAQ by clicking the link above. He also said that they use 3/8 inch fuel hoses. A small engine doesn't create much suction so a small air leak on the fuel line will keep the fuel pump from getting fuel from the tank. If your vent was not open then squeezing the ball would not keep the motor running if the fuel pump won't pull the gas then the suction from the ball would not be enough to pull it either. Thanks. The primer bulb on small engines is a small plastic piece that, when pressed down, draws fuel from the fuel reservoir … He said his primer bulb was nearly flat at cruising speed, but the engine kept running and fuel kept flowing so he didn't think much of it. Avoid future workouts until you've been examined by your medical professional for the possibility of a more serious issue. So yes it does … Outboard Motors > Topic: Gas primer bulb going flat! Then there is the other style that is a little more complex but works on the same principle as the Purge Primer. If you do not, the check valve in the primer is bad. By JOHN WAWROW December 10, 2020 GMT. 2: the only aftermarket primer bulb I would use is a Sierra (Shields Hose). ADD SPACE Laurie Cork Ph. Buffalo is … PugetSoundBoater US Member - 2 Years Replies: 980 Topics: 136 November 6, 2016 at 4:52 pm #47074. Pushing the manual primer knob all the way in, prevents fuel from flowing through the primer. leave the gas cap lose the vent may be plugged.Does the primer bulb going soft or flat.Next the fuel pump.If older Mercury might have a crank case leak. If I am able to shift into gear, it will run for 10-15 seconds and quit.I have … A blocked outboard fuel line prevents fuel from getting to the motor. 1 of 2. The presumption is that the new pressure relief valve is working correctly and that the engine is stalling … Thus the fuel lift … Much of the time, the oil alarm will sound for 10 seconds and the oil light will stay on. Unless your pump is able to ‘self-prime’, you will need to prime your pump before it is able to pump water. 09-10-2013, 07:50 PM . Unless the engine is running, cranking, or the primer bulb is being squeezed, opening the valve will not provide the additonal fuel required when starting a cold engine. A local union-run food bank for laid-off Cast Members has been in danger of closing due to lack of funds, but the NBA Players Association is now donating $50,000 to keep it running a little longer.. Orlando Magic center Nikola Vucevic told Orlando Sentinel “We’re lucky to be in the … The way you have your primer bulb mounted … Squeezing the primer bulb is doing the same as the fuel pump does. Its easy to start and runs very well, but stops suddenly. It is essentially not seating and drawing air in through the discharge port. I bought a rebuild kit for each side of the gas side of the pump. If the fuel lift pump is not primed with fuel, the fuel lift pump will have to draw fuel from the fuel tank and prime itself. My 40 hp Evinrude runs in idle position for about 10-15 seconds and quits. 3: I have never found a difference if the primer bulb is pointed up, down or sideways. If you don't have a good stream of fuel, or you see air bubbles in the line, rebuild the pump. Never had that happen with one of my boats but I have … 24 Buffalo’s Patterson motivates Oliver to keep running. PDA. Is a fuel return line necessary? How It Works. He said that while he has heard of Fuel demand valve issues, they are rare. When it starts to lose power I can squeeze the bulb once to keep it running for another 30 seconds or so until it starts running weak again. I have oil in the tank and gas tank (just in case). This easy fix might make your day! Then there is the other style that is a little more complex but works on the same principle as the Purge Primer. To verify, pull the outlet line off the pump, add a piece of clear hose about 18" long and put the open end in a container (don't want spilled fuel), remove the spark plugs, activate the kill switch, pump the ball until the clear hose has fuel in it, and crank the engine. FARGO -- Don’t be … 4: If you have am anti siphon valve on the tank throw it away, most outboard fuel pumps don't have enough suction to keep them open, and they can gum up and stick without warning. 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