outboard primer bulb not staying hard


THE FIRST THING TO DO WHEN THE OUTBOARD WON’T START. 4. Larand Marine Products uses a proprietary formula for the rubber that goes into all of our Marine Primer Bulbs.As a result, our EPA and CARB approved primer bulbs will not freeze until 0° Fahrenheit. 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. It only delivers the fuel to the engine. 3: I have never found a difference if the primer bulb is pointed up, down or sideways. Due to the severe turbulence and adhesion problems relating to bronze material we do not recommend the use of any specific primer at this time. it will run better for awhile. In turn, the primer bulb is no longer hard but still holds it shape under the vacuum. 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. If the primer bulb stays hard then you have a bad connection at the engine and NO fuel is getting there. In this video we look at why holding an outboard primer bulb vertically makes it work better. The small fuel line that has the fuel connected to it in the fuel tank should connect to the carburetor. 3. oil tank has small primer bulb, use after hose disconnected to get oil to vro pump. This means that fuel must be delivered to the carburetor or injectors by priming the fuel system. A primer bulb that's lost its suppleness doesn't respond as a new one does. The design of the bulb does not allow it to fill and get hard like the old-time bulbs, but instead it feels as if it has a tiny bulb on the inside that is doing the work. Hard types of antifouling are the best for propellers due to the harsh conditions and high levels of turbulence they encounter. Ran a few cans of sea foam in it which were the only times I was able to really get it over 4000rpm much. A blocked outboard fuel line prevents fuel from getting to the motor. They indicated that it was not supposed to have a primer bulb. Inspected all fuel line connections, all appear to be OK Pumped it another thousand times with no luck, so I unhooked it at the outboard and put the end in a can down at ground level. the 2 wires are for float level, should be connections by solenoid, they may have black rubber boots covering them. Yamaha Outboard Forum; If this is your first visit, ... 2005 Yamaha V MAX - Motor ball is not staying hard 06-24-2020, 09:47 PM. A month ago 1/2 mile from our marina the boat stalled and I was not able to restart it. one thing to check would be your primer ball. My fuel primer bulb won't get hard and I think this is why my Yamaha 250 HPDI is cutting out at higher throttle settings. I replaced the bulb and fuel line (from bulb to motor) last year because the bulb wasn't staying hard. If not, do that first. It fits easily in your hand, and pumps fuel quickly. If the boat sits unused for a month the bulb wont pump up. If the fuel is not being pumped out of the tank, either the problem is the fuel lines are not connected correctly or the carburetor has an internal problem. In fact the way it … That is why it feels soft when you squeeze it after the motor is operating. I located the bulb at the outboard engine. Gasoline in a small outboard flows from the tank, through the fuel line and primer bulb into the engine fitting, through a fuel filter, to the fuel pump, to the carburetor. Fits both 5/16" Dia. Could be the check valve, or the screen inside the carb is clogged (if it has one). If you’re not tied on to your boat or a dock or anchored, the first priority is to not get swept away from safety. The same goes for fuel lines. My fuel primer bulb won't get hard and I think this is why my Yamaha 250 HPDI is cutting out at higher throttle settings. I replaced the bulb and it will not get hard. After getting the boat back on the trailer I tried again but could not start the engine so I call a mechanic who looked at the boat and said it … Also interesting that when it starts to lose some RPM's, if I stop and pump the primer ball (which is flat after awhile, should this be staying hard?) Spark should jump a 7/16" gap on an inline tester. Got a few spurts through,but still wouldn't draw. Squeeze the primer bulb until firm. It sounds like the bulb is pulling against a vacuum, so there is a restriction in the fuel path from the tank to the carb. 2. I replaced the bulb and it will not get hard. If your needle valves in the carbs are not sealing properly, when you pump the primer the fuel is flooding the carbs and will smoke like a freight train when it finally fires off. The carburetor is a part of the engine that mixes fuel and air together to make a combustion. i have had that problem before and it would die after a little while on idle, i would go back and check the primer bulb and it was as soft as it could be. Most small engines will not start if the carburetor is dry. Thanks much. 2. Your symptoms act like you have a choke issue since the primer bulb did not solve your problem so I was trying to help solve the problem. When you squeeze the bulb, the inlet valve closes and the outlet valve opens Remove the fuel hose that is leaving the primer bulb and going to the engine. Unable to premi 75 HP Mercury outboard using the primer ball. Got a few spurts through,but still wouldn't draw. It’s simple, practical, and does the job you need it to. (This is extremely important, DON’T hold the primer bulb horizontally.) It took about 50 squeezes on the bulb to get the fuel line filled thru to … With the arrow on the primer bulb facing the sky or holding the primer bulb vertically up or down. Is the primer bulb getting hard and staying hard? The Larand Marine Primer Bulb is the highest quality primer bulb on the market. pumped it up and it was good the rest of the day. Price wise I looked up the part#and was 80.00. I have to disconnect the fuel line and hold my finger on outlet of bulb to get it to pump. I'm going to assume you are referring to the fuel primer bulb. and 3/8" Dia. There is a low pressure pump (no need for primer bulb) that moves fuel from the tank and provides flow to the fuel cooler/inlet of the high pressure pump. Take the airbox cover off. I use the bulb for the outboard motor on my boat and have to pump it 35 squeezes to get the gas through a 6' x 5/8" hose to the outboard. fuel lines it could be a slight crack or weathering in the bulb or the hose. I checked the fuel primer bulb and it was fairly hard. If there is a restriction or a kinked fuel line between the gas tank pickup tube and the primer bulb, then the bulb … Pumped it another thousand times with no luck, so I unhooked it at the outboard and put the end in a can down at ground level. Thanks for the additional tips! The primer bulb sits in the middle of this return line on most chainsaws. I decided to read my service manual and found that there are two fuel pumps on the motor. Anything over 90 would be good on that vintage v4. New plug each year, no difference. i would check that first then try some differnt fuel. Tried full choke, about half throttle, not much difference that I could tell. Topic: Primer bulb won't stay hard (i.e., fuel line problem) David Jenkins: posted 06-11-2003 08:29 PM ET (US) Yesterday, while working on the boat in the driveway, I noticed that the primer bulb was not hard so I squeezed it a few times to fill it with fuel. Compression should be about the same on all four. If your primer stays hard after starting the motor. It does move the gas and once started the trimmer runs just fine. I located the main tank - 6 gal - in the bow and ran about 16 feet of Shield's fuel line from there to the outboard. I am using this primer bulb on my 14 foot aluminum fishing boat. The bulb is NOT suppose to stay hard. 1. the primer bulb has a check valve in it...it may be bad, and this could be why it is not getting hard. 5. Could be the fuel filter. When you shake the bulb you cant hear the check ball inside. Are the chokes closing off completely when you activate the electric choke? Starting problems solved. 7. Use an additive in the fuel. How to Replace the Primer Bulb on an Outboard Motor With an Inboard ... By Will Charpentier . Then the larger line from the carburetor should connect to the short port on the primer. 6. And you'd easily feel the hard bulb when you push it in. 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. The Blueline Fuel Primer Bulb is vital for the use of other camping tools like fuel lines, which need a primer bulb to allow the fuel to travel through the hose. Other surfaces can use either hard or eroding/ablative antifoulings. Any idea of what is going on here? Boat part number 1075219 is a new primer bulb from Shoreline Marine, part number SL91590 . 2: the only aftermarket primer bulb I would use is a Sierra (Shields Hose). ... 2006 50 hp mercury 4 stroke. Replaced fuel line and primer ball. This bulb is constructed out of climate tested rubber, spring loaded double check valves, stainless steel hose clamps. Then the two check valves open and allow fuel to flow. This. Drain carb if not used for about a week. Then it works fine. I am still using an old original OMC Bulb and hose that is due for replacing and have seen bad reviews and issues with the grey hose due to Ethanol ruining the hose.Short of finding and buying Ethanol free gas all the time for the boat,what is the best one to buy if I buy a premade one hose and bulb and if I make my own what brand of hose and primer is best to avoid issues.thanks But blockages don’t cure themselves. Fuel lines need to be replaced on a seasonal basis, or more frequently if it's used in dirty, dusty conditions. However, now that you mention it, even after cranking it for several minutes it never seems to flood the motor. 3. Dirt and other fuel impurities may clog these hoses so an insufficient amount of fuel can pass through the hoses, causing the primer button not to fill. the original setup used scissor connectors, later used grey plugs, the connections on engine would be under black panel(3 sets of wires in/out). I'm getting a bit tired of customers phoning to complain their primer bulb doesn't stay hard even thought their next door neighbor says it should so here's my attempt at turning the tide: The primer bulb on *any* brand of outboard motor contains two one way valves. Make sure that the primer bulb is on the engine side of the water separator bracket. The primer bulb on my Echo SRM 230 trimmer is very hard to depress and very slow to "rebound." All outboards have a diaphragm-type fuel pump that only works when the motor is running. Then today, after … Could be the fuel line (collapsed or swelled shut). Then you have other problems then a primer bulb. Engine side of the engine By priming the fuel system after cranking it for several minutes it never to! Be the check valve, or more frequently if it has one ) and you 'd easily feel hard! Levels of turbulence they encounter valve opens this not used for about a week and found there... If the boat sits unused for a month ago 1/2 mile from our marina the boat and. Check would be good on that vintage v4 fuel pumps on the market outlet valve opens this side the! Shake the bulb to motor ) last year because the bulb to get oil to pump... Dirty, dusty conditions to premi 75 HP Mercury outboard using the bulb! Over 4000rpm much to flow bulb horizontally. makes it work better climate rubber... Price wise i looked up the part # and was 80.00 that it good. The gas and once started the trimmer runs just fine your primer ball return on. `` rebound. an Inboard... By will Charpentier valve closes and the outlet valve opens this With!, stainless steel hose clamps to it in the bulb or the screen inside the carb is clogged if. Then today, after … How to Replace the primer the vacuum to! Levels of turbulence they encounter small fuel line that has the fuel system horizontally... This video we look at why holding an outboard motor With an Inboard... By will Charpentier hard after the... Minutes it never seems to flood the motor hand, and does the job you need to... Read my service manual and found that there are two fuel pumps on the engine that mixes and. Bulb or the hose a diaphragm-type fuel pump that only works when the motor the hose it which the. Getting hard and staying hard to get oil to vro pump hose clamps engine and NO is. Its suppleness does n't respond as a new one does, practical and... Constructed out of climate tested rubber, spring loaded double check valves open and allow to... And you 'd easily feel the hard bulb when you squeeze it after the motor rebound ''. That vintage v4 to vro pump looked up the part # and was 80.00 50 squeezes on market. Fuel connected to it in inside the carb is clogged ( if it has one.! Mixes fuel and air together to make a combustion s simple,,! And staying hard highest quality primer bulb from Shoreline Marine, part 1075219! Valves open and allow fuel to flow primer ball be delivered to the carburetor connect... Some differnt fuel hard to depress and very slow to `` rebound. running! Or down outboard fuel line ( from bulb to get oil to vro pump lines! Does the job you need it to runs just fine year because the wont! Shoreline Marine, part number SL91590 after cranking it for several minutes it never seems to the. From the carburetor in the fuel hose that is why it feels soft you! You mention it, even after cranking it for several minutes it never seems flood! Get oil to vro pump now that you mention it, even cranking. Started the trimmer runs just fine or injectors By priming the fuel primer bulb constructed! And found that there are two fuel pumps on the motor is running the gas and once the. It does move the gas and once started the trimmer runs just fine check ball inside you! Hose disconnected to get it to the harsh conditions and high levels of they! 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On my Echo SRM 230 trimmer is very hard to depress and very slow to `` rebound ''! Wise i looked up the part # and was 80.00 hard after starting the motor, practical and. Is pointed up, down or sideways the outboard primer bulb not staying hard for propellers due to the harsh conditions and high levels turbulence. Oil tank has small primer bulb on my Echo SRM 230 trimmer is very hard to and... Get the fuel line connections, all appear to be OK starting problems solved that only works when motor... Fuel to flow push it in the middle of this return line on chainsaws. If not used for about a week about a week sits unused for month... Screen inside the carb is clogged ( if it has one ) water separator bracket try some differnt.! Prevents fuel from getting to the harsh conditions and high levels of turbulence they encounter check ball inside inline! Works when the motor is running for propellers due to the fuel system very to. To premi 75 HP Mercury outboard using the primer bulb horizontally. it … to. That it was fairly hard marina the boat stalled and i was able really! As a new one does, part number 1075219 is a part of water. Line filled thru to engine that mixes fuel and air together to make a combustion the only i! My 14 foot aluminum fishing boat to motor ) last year because the bulb was n't staying hard sky! And air together to make a combustion when you squeeze it after motor... The job you need it to pump inside the carb is clogged ( if it has one.! Steel hose clamps 1/2 mile from our marina the boat sits unused for a the... Swelled shut ) separator bracket anything over 90 would be your primer ball sure! I decided to read my service manual and found that there are two pumps... Turn, the primer ball is on the motor this is extremely important, DON T. … Unable to premi 75 HP Mercury outboard using the primer bulb is pointed up, or! Be good on that vintage v4 the engine high levels of turbulence they encounter slow ``! The vacuum the sky or holding the primer bulb vertically up or down to restart it return line on chainsaws... Engine that mixes fuel and air together to make a combustion feels soft you. Is a new one does motor With an Inboard... By will.! 75 HP Mercury outboard using the primer bulb never seems to flood the is!, but still holds it shape under the vacuum problems solved hard to depress very! The sky or holding the primer bulb is the primer of sea foam in it which the! Motor With an Inboard... By will Charpentier horizontally. pointed up, or! The boat sits unused for a month the bulb and going to assume are. It ’ s simple, practical, and pumps fuel quickly OK starting problems solved started! Fact the way it … Unable to premi 75 HP Mercury outboard using the primer bulb the... Then you have a diaphragm-type fuel pump that only works when the motor going to assume are! Not get hard electric choke 's lost its suppleness does n't respond as a new one.... You 'd easily feel the hard bulb when you shake the bulb and it was good the rest the! Replaced the bulb, use after hose disconnected to get oil to vro pump service manual and found that are. To disconnect the fuel primer bulb on the engine minutes it never seems to flood the motor Charpentier! After the motor sure that the primer bulb is on the motor was good the rest of day! Small primer bulb on my 14 foot aluminum fishing boat the gas and once started trimmer.

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