Outboard Motor Primer Bulb Won T Stay Hard

Typically I will check the primer bulb when first starting the engine after a lay up period of a week or more, otherwise it is not used. To see if that is the issue, see whether the fuel primer bulb on the fuel hose is hard or soft when the engine starts to cut out. Outboard motor care is not a difficult task at all. I was told by service manager that this motor didn't need one. Non-corrosive robust construction. I won't lose the. Start out again, runs great up to 5k rpm for 30 seconds. Took hood off, and found cap on fuel filter canister was loose and sucking air. The engine runs well for a few weeks (starts on first or second pull every time), and then a week later will stop idling, and the next week won't turn over without excessive pulls (50+) but doesn't run. The fuel system retains priming for long periods of time during which the engine is not running. If you frequent the outboard motor repair forums, the assumedly cure all for motors that do not run right if they have been setting for a year or so, is to tear it apart, clean/reassemble th. The carburetor is a part of the engine that mixes fuel and air together to make a combustion. Also for: Bfp8d, Bfp9. There really wasn't a lot of material to video, so I had to use a number of still-frames while I described the situation. I have a Mercury 9. Beneteau First 210/211 Club Newsletter FALL ISSUE. They can answer questions for any Yamaha outboard model or horsepower. It ran great. Special Orders. Since I'm installing a new E-TEC 200 on my Whaler, I decided to go ahead and purchase a new fuel line and primer bulb assembly while I was at my not-so-local Evinrude dealer today. My buddy now owns that boat and the trick still works. That depends on what was in the boat originally: a. Never another Mercury again for me as the factory won't cover it even though it is a KNOWN ISSUE. Then the paint will go on smoother, you actually paint right on the wood, it will soak in and getting more rare to find the look you motivation. The reliable, quiet 135hp and 150hp outboard motors are ideal for pontoons, center console, multi-hull, and bay boats. Taking engine cover off, appears clean and well greased. When I opened the package, I discovered that the suction side (tank end) of the line is a little over a foot long, and the discharge side (motor end) is about 8 feet. I "think" I understand what you are describing, but want to make sure…. Be sure to put a little 4 cycle engine oil on the lines so they will slide easily through the fuel tank holes. Check to see that fuel is getting to the engine. Any suggestions on what this could be?. I re-did both of mine with the Tempo 3/8" hose and primer bulbs, and after 5 years, still have no problems with the equipment. Once you start the motor the oneway valve in the bulb stops to function allowing fuel to the motor. Check the fuel lines connecting the outboard motor to the fuel tank. How to Start a Carbureted, Electric Start Outboard Motor. The motor has farly low hours on it and is on a 17' Whailer that he gave me. I was told by service manager that this motor didn't need one. This is because there is no gas in the carburetor. There really wasn't a lot of material to video, so I had to use a number of still-frames while I described the situation. (Leaning forward does not help fuel find it's way to the cylinders and can lead to hard starting). Some motors can be hard to start after this installation, because they need to "digest" all of the air in the new fuel line and filter. The next time I took it out, it would stall when I tried to idle. 9 & 15 hp outboards 1974 - 1992 (Engine Troubleshooting) I am sure that sometime you may acquire a motor, or be asked to help with one that has sat for some time & or possibly will not start. Pull the choke knob out and with a quick effort pull the starter rope. Disconnect the negative cable of the battery before performing any maintenance work on your outboard motor's fuel system to prevent fires. If all those are good you could have pin holes in the fuel pump diaphram. Five Tips For Hard Starting Outboard Motors. It really helped me wrap my head around how the fuel delivery works on an outboard engine. It would be interesting to see if, when you pump the primer bulb, the fuel filter bowl fills up. Why won't my Mercury outboard 9. The handrail can be mounted on either side of the platform, so the platform may be placed on either side of the outboard motor. It would be interesting to see if, when you pump the primer bulb, the fuel filter bowl fills up. Hi guys!Its been a while since Ive been here, unfortunately have not had much opportunity to use the boat in the last 18 months I went out this morning to fire it up for the first time this season, was hoping to use it this week, but it will only run for about 3 seconds, then shut off. I suspect that the problem may have to do with the fact that the boat has been out of commission for a few weeks and wasn't used due to a broken steering cable. Dialed-up speed and screaming acceleration. If I try to dry-start, with no priming, it won't fire at all. Lift the cable from the battery, move it outside of the battery box and close the lid of the battery box. It was pliable and easy to use as opposed to the old fuel line which was hard and awkward. Once it got hard and the rest of the time is gets stiffer but still allows me. The gas line is new (and yes it was on the motor last week when it ran fine), the only thing that is different from last week is I added some gas and seafoam to the tank. the only reason im throwing this out there cuz i dont see it yethave you checked the water/fuel seperator?the pumps should pull enough fuel to supply the engine at higher speeds,but not so much at low if obstructed. Duck hunting mud motors can drive straight through 99% of the toughest area's that any bog can put in your way. I had a primer bulb once that got flimsy after a couple years of use and no longer had the rigidity to remain "inflated" when the engine was sucking fuel. The carburetor is a part of the engine that mixes fuel and air together to make a combustion. about 1980's model i think. 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. 00 for a new 4 cycle engine spark plug, the primer/fuel kit and a new primer bulb since the one in the kit was to large. Other uses can result in injury to the operator or damage to the outboard motor and other property. 1997 Yamaha 9. Since January 2011 I have been given the opportunity by three young men from Ramsey Brothers Restorations to move my outboard motor restoration shop into their facility. So, what are some of the common causes of flooded boat motors? Choke. It is supposed to remain closed until you connect the hose to the engine. I pump the fuel line primer bulb until firm, then I'm supposed to press the primer on the front of the motor twice and crank it. go and look for cracks in the bulb or around the hose, sounds like it could be sucking some air i am not an outboard mechanic or anything but i have had my share of fuel line problems. I upgraded the ignition system with a Nova 2. 1988 johnson 60 hp vro outboard fuel primer which way is switch ne 1996 evinrude 30 horse outboard motor hard to. With paint, a primer is advised to seal the. And in side-by-side tests, up to 15 percent better fuel consumption than other outboards. Rubbermaid 7ft X 7ft Plastic Storage Shed Small House With Garage Plans Wood Boat Plans Runabout Three Car Garage Apartment Plans Build Your Own Swing Set Plans You can afford a shed kit online if there's no need the with regard to you build yourself or think you not have the skills it will take to construct a custom wooden storage shed. Squeeze Bulb. The oil primer bulb is always hard, but the fuel primer bulb is not so hard. This is especially true if the boat hasn't been running for several hours or more. I am having trouble keeping the fuel flowing. From outboard engine and electrical and electronics systems to engine and alarm issues, tilt and trim issues, this is the place to find information. Whether you own one of the early Chrysler Force Outboards or the later Mercury models, Wholesale Marine has the reliable starters and solenoids for your outboard. I used to run an old 1975 150 inline six. When I disconnect and push the spring on the engine side and put a little fuel in the line the engine will start for a second of so. Check the oil level on four-stroke motors. Yamaha Outboard Fuel Line | eBay - Electronics, Cars, Fashion Find great deals on eBay for Yamaha Outboard Fuel Line in Boat Parts and Maintenance. When the engine won't start Sometimes, even after regular use, that outboard motor engine won't start. Takes four or five pulls to get it running, but it's happy after that. after running some new. As a result, starting the engine may prove difficult due to the wet spark plugs. Outboard motor wont start and primer bulb wont get hard - Answered by a verified Marine Mechanic We use cookies to give you the best possible experience on our website. The one thing you mentioned about your primer bulb not staying firm screams leak in the fuel line or fuel pump. An excellent suggestion to remember when you're thinking about HIPA 6 Pack 561635001 Primer Bulb Pump for Ryobi Homelite Carburetor 26cc String Trimmer Brush Cutter Backpack Blower Buying is to ensure the website is legit. One problem I see a lot is when people put the motors away with gas in the carb and lines. MUST BE USED WITH TOHATSU FUEL TANK OR L1273 TANK FITTING. Go back and Gas ball is soft, squeeze again till hard and boat starts and runs. Add ethanol treatment for outboard engines. You can see the. I would do is prime the carb with the primer bulb then pull the fuel. But this time, the engine didn't die of gas starvation as it had in the past. Squeeze bulbs on outboard motor fuel hoses prime empty fuel lines so that the outboard engine’s integral fuel pumping system, which only works with liquid, can pull the fuel from the fuel tank to the engine. Primer bulb is not cracked. The motor has been hard to start since new if it has sat for over one week without being run. The primer bulb wont stay hard as the fuel pump sucks fuel through the fuel line it has vacume in it and generaly takes a couple of pumps to make the bulb go hard this is normalhowever if you have to keep priming the bulb for the engine to run the fuel pump is not pumping fuel and will need replacing. Can post at. It would randomly collapse and had to be replaced. Make sure there is fuel in the. Primer ball doesnt really stay hard during normal running ,the only reason it gets hard when you "pump" is the fuel system in the motor is full the float comes up and seals the needle valve. However, the primer bubble is not sucking down flat, and the gas tank is an original Yamaha metal tank and does not have a vent in the cap. When these collapse or crack, they don't function properly and must be replaced. Driving an outboard motorboat is a ton of fun. Very compact and reliable. Engine starves for gas have to keep pumping the primer ball? It's a 70hp Johnson outboard motor. Hi, the primer bulb should get hard when you manually prime it-they work ALOT better in the vertical position with the arrow pointing up. After we stopped to fish the motor would start fine but when I gave it some gas it would kill. The engine had a hole in the fuel line where air could suck in and fill the fuel filter with air, causing the engine to run bad. , that will have to be changed, and maybe larger fuel system/lines for the higher HP engine. 150HP as rated by the engine manufacturer. View and Download Honda BF200A owner's manual online. Designed to replace air in the fuel lines and carburetor with gasoline when you depress the button. I have changed the fuel pump, and it seemed to solve the problem for one day, but the next day I started having the same problem. Primer Bulb. It was pliable and easy to use as opposed to the old fuel line which was hard and awkward. No bites so time to move only engine won’t start. 1988 johnson 60 hp vro outboard fuel primer which way is switch ne 1996 evinrude 30 horse outboard motor hard to. Problems with my Johnson outboard I checked the squeeze bulb. Whether your small engine or lawn mower needs seasonal maintenance services or a major repair job on an outboard motor, we're here to help you. Over 20,000 items in stock. Could only keep motor running by periodically squeezing bulb. On the intermittent occasions I was actually able to finally get it started at the dock, it would die after applied throttle continuously for approx 5 minutes. Generally it is not necessary to operate the fuel primer bulb prior to engine start. Re: Primer bulb - should it stay hard? No it shouldn't necessarily stay hard. It would randomly collapse and had to be replaced. If I pump the bulb it it would then run fine for a min then repeat the same process. This outboard and stern drive self-etching, phosphate primer chemically bonds with aluminum and steel to form a corrosion-resistant base coat. Once you start the motor the oneway valve in the bulb stops to function allowing fuel to the motor. the basic type of engine. "Outboard Motors" service and repair manuals. txt) or read online for free. Pumped it up. Check the oil level on four-stroke motors. Most small engines will not start if the carburetor is dry. A normal reading should be between 60 psi (pounds per square inch) and 90 psi. The big "chunk" on the stand to the left is an early '60s Homelite 55 hp 4-cycle outboard. 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. From outboard engine and electrical and electronics systems to engine and alarm issues, tilt and trim issues, this is the place to find information. On an outboard engine a fuel lift pump that is failing can be augmented by using the fuel primer bulb as a mechanical (hand operated) fuel pump. Need to fix your AA0101-0005 Outboard Motor? Use our part lists, interactive diagrams, accessories and expert repair advice to make your repairs easy. i use to work on johnson/ evinrude and i would start by cleaning the carbs and if that dont work i would replace the fuel line from the tank to the motor primer bulb and all i would think that should take care of your problem the little check balls in your primer bulb could be shot and letting fuel flow back threw the line and the carbs could have a piece of something floating around in there. No leaks or build up anywhere. Took the motor cover off, with a set of needle nose loosened the clamp on the fuel line feeding the bulb and unscrewed the nut holding the bulb in place took the old bulb out of the hole and placed the new one in tightened the nut and plugged the fuel line back on and moved the clamp back to the correct position and put the cover back on. Marineengineparts. submerged outboard motor recovery. No bites so time to move only engine won’t start. Open gas tank vent, pump primer bulb until it is firm, raise hi-idle lever full up, push the key in and hold it in while turning it to "start". Advertisement Of course, we're barely scratching the surface of what can go wrong with an outboard, and how to fix it. 1997 Mercury 200 HP EFI help!!!! Hey everybody, I am not sure if this is the best place to post this but, here it goes. It may be underneath the starter housing cover or connected to the fuel lines, which may be exposed along the edge of the engine. Consult your owner's manual for the location of the filter -- your engine may not have one. The engine starts is hard to start has no hole shot and sometimes stumbles. 25 hp Yamaha Outboard 4-stroke. Several years ago I had the same problem you are speaking of with my 25HP Mariner. the fuel primer bulb would point downward, starving the engine. This is especially true if the boat hasn't been running for several hours or more. View and Download Mercury 10 TwoStroke operation, maintenance & installation manual online. ? 3 months ago I bought an old mark twain boat with a 85 HP 2 stroke Johnson outboard motor. Hey, you! Yeah YOU! How come you haven't registered? Have you read about our new blue star program? We are donating $10 of each blue star subscription to the Blue Ribbon Coalition to ensure that we will have trails to recreate on for years to come. ? pump the ball until it gets hard and won't pump any more. I replaced the bulb and it will not get hard. I checked everything I could think of ,o-rings, checkvalve, fuel pump, hose clamps, gaskets everything to do with the fuel delivery system. Alarm for as much as my pea brain knows on a 2 stroke is overtempya mighta picked up some weeds ,plastic,in your. After I shut down and drift fish for about 1/2 hour, I have to re-squeeze Gas ball to get engine to run. The bulb wasn't completely soft, as I was able to get it "mostly hard", but it definitely had some play in it that I don't remember and wasn't rock hard. The Honda BF8 and BF9. Check the routing of the tan temperature wires, an example of a bad location is shown below. Motor runs well, $700 spent on carb rebuild, starter solenoid and tune up in the spring. It will start right away and idle when I first put it in the water (every time). Clint Babcock. Primer bulb won't fill The leak was small enough that it would still prime and I didn't notice any change in engine performance but I decided to replace it. To start viewing messages, select the forum that you want to visit from the selection below. Always, always, always, get an OEM primer bulb (any OEM brand is fine), because the aftermarket are garbage and not worth saving a few dollars for. The only way it would stay hard is if you had a pump pushing fuel to the bulb. I can put in forward and the motor will perform excellently for about 10-15 minutes and then will lose power down to a slow, medium thrust. Here is your cold start procedure. Pump up the fuel line primer bulb until it becomes hard. They are strong, yet lightweight and won’t crack, dent or rust. This engine has about 200 hours on it. 9 out of 5 stars 121. He started up the outboard and it ran fine. go ahead and splurge, spend the extra $8 for the yamaha brand name (or BRP or Mercury), the aftermarket primer bulbs don't have the greatest reputation for durability. 9 Mercury, four-stroke outboard motor. Yamaha Internal Engine Cleaner is a dealer-only applied product that is the strongest and most effective way to clean out carbon and other build-up from the inside of your outboard. 4-cycle outboards are nothing new, and the Homelite was not the first. If you can flood your engine with the primer bulb, then your carbs need rebuilding. Reduce engine speed below 2000 RPM. If fuel comes out the carb throats when you squeeze the primer bulb, the leak is at the carb float valves, or valve seat o-rings. routine is backed in water pump the bulb til hard. When I opened the package, I discovered that the suction side (tank end) of the line is a little over a foot long, and the discharge side (motor end) is about 8 feet. Complete with vented cap with seal 22L & 30L sizes have a fuel gauge. Took bulb back off and motor has run fine ever since. Free 2-day shipping on qualified orders over $35. Many parts will fit Johnson Evinrude 40hp to 55hp 1996 to 2001. Column # 2 Pressure Tanks. Yamaha Outboard Forum; If this is your first visit, be sure to check out the FAQ by clicking the link above. the bulb gets hard when the float/jet closes telling you the carb has the proper amount of fuel and the system is functioning properly if it don't get hard that means something is allowing fuel to flow somewhere when its not supposed to (engine off the bulb should get hard after a few squeezes). Got my outboard motor serviced the other day. This helps the engine deal with gasoline that has high ethanol content (up to 10 percent). Or you can buy a new fuel hose, connectors and. Squeeze Bulb. By Kevin Falvey. Michigan Wheel, Solas, Turning Point, Stiletto, Quicksilver. The fuel system retains priming for long periods of time during which the engine is not running. How can I soften the primer bulb on an outboard gas line? I switched tanks and my outboard motor won't run. The big "chunk" on the stand to the left is an early '60s Homelite 55 hp 4-cycle outboard. They are not all the same size so you need to get one specifically for your carburetor. Most small engines will not start if the carburetor is dry. View and Download Honda BF200A owner's manual online. Hi guys!Its been a while since Ive been here, unfortunately have not had much opportunity to use the boat in the last 18 months I went out this morning to fire it up for the first time this season, was hoping to use it this week, but it will only run for about 3 seconds, then shut off. Also for: 9. Maintaining Johnson/ Evinrude 9. My motor is 2007 and has always run like a top. It will eventually die unless I pump the primer bulb to keep it running, however it will not get back up to a faster running speed. 9 HP) Won't Start or Stalls After Starting November 22, 2016 Repair Manual Do-It-Yourself Outboard Repair Guides 5 There can be many reasons why a 9. Give it a good thorough looksy on all the fuel lines. for information. The motor has farly low hours on it and is on a 17' Whailer that he gave me. My Briggs 5HP Won't Stay Running. Same with that Force outboard probably. As a result, our EPA and CARB approved primer bulbs will not freeze until 0° Fahrenheit. Five Oceans One Way Valve Universal Primer Bulb, 3/8" & 5/16" 3. It seemed to work alot better but still have the problem. Check the engine pressure by removing the spark plug and connecting the compression test gauge to the system. I had a primer bulb once that got flimsy after a couple years of use and no longer had the rigidity to remain "inflated" when the engine was sucking fuel. manual start. However, if you jumped this motor in or if you just did a lockout and brought it up from a sub. You can see the. "stiff" is subjectiveeven when brittle they are usually realitively easy to depress. THE FIRST THING TO DO WHEN THE OUTBOARD WON'T START. Banse This review is based upon a two-year evaluation of a production 9. More than 300 hours were logged. Mercury 70 hp bogs down at full throttle. Battery charged. Operating this Outboard Motor requires special effort on your part to ensure your safety and the of others. My primer bulb has always "gone flat" shortly after start and a little use. The primer bulb wouldn't stay firm, so I replaced the primer bulb as well as the entire fuel line. When I stopped pressing the primer,. At times, this is a momentary issue and then others it seems to take around 30 seconds or longer for the engine to finally rev up and push the boat on plane. Coleman outboard motor won't start when warmed up Stay Connected. At times, this is a momentary issue and then others it seems to take around 30 seconds or longer for the engine to finally rev up and push the boat on plane. If you stop pumping fuel line motor cuts out. Buy 93038LP7 Universal High-Output Primer Bulb, EPA and CARB Certified - 3/8-Inch at Walmart. I was delighted with the fuel line. The bulb will not get firm and the filter doesn't completely fill. routine is backed in water pump the bulb til hard. Im reviving this dead bg 75 and it's proving to be stubborn. Compounded to accommodate today's alcohol-enriched gasoline blends. my outboard motor runs then stops. (Leaning forward does not help fuel find it's way to the cylinders and can lead to hard starting). Banse This review is based upon a two-year evaluation of a production 9. Five Tips For Hard Starting Outboard Motors. Took the motor cover off, with a set of needle nose loosened the clamp on the fuel line feeding the bulb and unscrewed the nut holding the bulb in place took the old bulb out of the hole and placed the new one in tightened the nut and plugged the fuel line back on and moved the clamp back to the correct position and put the cover back on. THE FIRST THING TO DO WHEN THE OUTBOARD WON'T START. It can also create sludge and deposits in outboards. It will start right away and idle when I first put it in the water (every time). In this video I clean the carburettor from a Yamaha 15HP two stroke motor. The engine starts is hard to start has no hole shot and sometimes stumbles. My old Yamaha 8hp will not start, any suggestions greatly appreciated. If you stop pumping fuel line motor cuts out. (unless, obviously, it's been cut). Mechanic said everything else checked out ok. If it's under the starter housing, use a screwdriver to remove the housing screws and place the screws away from the work area so they won't be lost. 1-800-262-8799. Squeeze the bulb in the fuel hose to get fuel up to the motor. Since January 2011 I have been given the opportunity by three young men from Ramsey Brothers Restorations to move my outboard motor restoration shop into their facility. The bulb is to bring fuel to the carb/pump. Five Oceans One Way Valve Universal Primer Bulb, 3/8" & 5/16" 3. It was doing the same thing when I bought it,but I thought with a carb clean and reset it would cure it. All you need to know about your outboard engine issues and good advice from your fellow boaters. Only 2 basic reasons for it to be hard to push, restriction in the primer body, or a kinked/restricted return line. Starter Motor, fuel primer, hydraulic tilt removed. The fuel primer bulb will pump up hard,and the sight glass inline fuel filter fills up. PROBLEM: The engine ran fine for a while, but then it shut down and won't re-start. My 97-98 Mercury 40hp outboard won't start after it has warmed up. inability to get hard is caused by loose fittings (sucking air upstream of the bulb, or leaking fuel on the engine side). This eliminates excess fuel that would otherwise be forced through the fuel line due to pressure in the tank, and avoids the related flooding and engine failure. By spending an hour with your investment, you can prevent 90% of the common problems that occur with an outboard motor. I also had the same problem with the 120 Force. These “HULK” outboard motor fuel tanks are of robust rotationally moulded plastic construction and are completely non-corrosive. Check the oil level on four-stroke motors. 5L XRi EFI (200 hp - 1992 model) that does not have an electric fuel pump. Pressure tanks. Many parts will fit Johnson Evinrude 40hp to 55hp 1996 to 2001. In the fall when you figure your out on the water for the last time for the season, add fuel conditioner to your fuel tank and let it circulate throughout your entire fuel system before you put the boat up for winter. One of the most common causes of flooded outboard motors is improper use of choke. A two cycle engine must have a tightly sealed crankcase to start and run right, as the downward stroke of the piston forces the fuel/oil mixture up into the engine for the compression and firing stroke. Then the paint will go on smoother, you actually paint right on the wood, it will soak in and getting more rare to find the look you motivation. The primer bulb started very hard, but as the engine ran, it got much softer (not flat, but softer). I am having trouble keeping the fuel flowing. Yesterday, I noticed, previous to pumping primer bulb hard, air in the top half of the small inline fuel filter (under the cowling). It would randomly collapse and had to be replaced. It can also create sludge and deposits in outboards. If I pump the bulb it it would then run fine for a min then repeat the same process. Took hood off, and found cap on fuel filter canister was loose and sucking air. I have a 1984 75 HP Mercury outboard motor, it runs good when it’s out of the water, BUT when there is a load behind it, in the water is bogs down and dies. inability to get hard is caused by loose fittings (sucking air upstream of the bulb, or leaking fuel on the engine side). Re: Primer bulb - should it stay hard? No it shouldn't necessarily stay hard. The V8 XTO Offshore features an electric steering system—an industry first. Low pressure in the engine will cause the engine to run sluggishly, or not at all. 9d, Bf15d, Bfp15d, Bfp20d, Bf9. If squeeze bulb will not pump up to a firm condition, it most likely needs to be replaced, as the inner check ball is probably bypassing fuel. I don't think the primer bulb itself is what's causing it to die, but may be a symptom of the real problem. The primer bulb does not stay hard like it should. The primer bulb started very hard, but as the engine ran, it got much softer (not flat, but softer). View and Download Honda BF200A owner's manual online. Once you start the motor the oneway valve in the bulb stops to function allowing fuel to the motor. 2001 40hp 2 Stroke Mercury Outboard Trouble. All information in this publication is based on the latest product information available at the time of approval for printing. Yesterday at the lake it worked great for about the 20 minute run to the fishing spot and then when I restarted the motor it ran fine for about 20 seconds until it conked out like it wasn't getting fuel. Moeller's Zinc Phosphate Primers are quality-tested to meet the needs of the marine environment. number are now located on a decal adhered. Usually end up flooding the engine. Outboard troubleshooting, hole in fuel line wproduktion. Yamaha Outboard Forum; If this is your first visit, be sure to check out the FAQ by clicking the link above. It ran great. Any ideas what it could be?. If the primer bulb pumps up hard, that indicates that the fuel system si loaded with fuel, including the fuel primer bulb and that its two (2) valves are in proper operating order. 9 out of 5 stars 121. Mercury Outboard Motor Installation Guide.