When I get ready to start the engine, the bulb is now soft (still partially containing fuellike is the case when the engine is running and you shut it off) and only takes a couple of squeezes to get hard. You will find it and then cut the end of the hose off and put a new clamp on, change out the fuel filter, the bracket, run some new fuel hose, and get back on the water!if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'bornagainboating_com-banner-1','ezslot_11',109,'0','0'])};__ez_fad_position('div-gpt-ad-bornagainboating_com-banner-1-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'bornagainboating_com-banner-1','ezslot_12',109,'0','1'])};__ez_fad_position('div-gpt-ad-bornagainboating_com-banner-1-0_1');.banner-1-multi-109{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:7px!important;margin-left:auto!important;margin-right:auto!important;margin-top:7px!important;max-width:100%!important;min-height:250px;padding:0;text-align:center!important}. Fasteners, Boat Windshield But the hoses themselves are just cheap! Only does it now and then and always starts first thing in the morning. 1 offer from $22.99. Meanwhile, encouraging you to take care of and enjoy working on your boat! Trailer Winches, Shop When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Is the primer bulb mounted with vertical orientation and arrow up? Parts, Rule 1500 GPH Automatic Ideally, the issue should be fixed after you reinstall the bulb in the correct orientation. The Motor has checked out fine, full comp. The Fora platform includes forum software by XenForo. The 90 hp Mercury manual covers every aspect of maintenance, service, troubleshooting and repair. Ski, Wakeboard Problem shoveled. Telescopes, Covers and Boat, Boat Buyers I am guessing there may be a problem with the lifter, the backflow valve (may not be the correct name), or some filters. ACCOUNT, Find Find the first place it connects to, generally to a fuel filter, and disconnect the fuel line there. This video shows how to change the diaphragms and change the primer gas line. Also always try to have the primer bulb facing upward. Fuel Line Air Leak. Running out of gas. Active Member. I'd also do a lift pump vacuum and clear hose test. Ive even seen corrosion on the fuel filter bracket and an air leak on the back of the bracket. Biminis, View Video, GPS Chartplotters & Brought to you by Barnacle Bill's Marine Supply. mtcop: posted 12-05-2007 08:25 AM ET (US) Well the stator I ordered came in yesterday and I installed it but the problem wasn't corrected. If the primer bulb is held horizontally. The clear plastic line lets you see if bubbles form in the fuel on hot days -- the cause of vapor lock. Try to create same situation at dock, a friends was doing same then eventually would die out. Rafts, Paddle GPS Chartplotter and Fish Finder Combo, Find Seems like a silly thing I know but the check ball in the primer is not as likely to be effective if the bulb is lying on it's side. Telescopes, Covers and Harware, Marine Nuts, Bolts, & No rough idle, no problems running motor, works perfectly once running. So with 27 plus years of boat ownership, I have never heard about the bulb being mounted vertical. Hardware, Boat Seats by Anchor Box Anchors, Fishing Rod & Reel It matters if the arrow is pointing in the right direction. It may not display this or other websites correctly. Category, View In the end it was weak fuel pumps. Remove reservoir fill plug screw. Modifications and Repairs. - I have a new to me Johnson 115hp V-4 that I have only run on two occasions. MarineEngine.com does not offer troubleshooting assistance or repair advice by email or by telephone.You are invited to join our public Boat Repair Forum to seek assistance from other members.You may also visit the Boat Motor Manuals section of our site to obtain a service manual. make sure the fuel bulb is not sitting in a horizontal position if possible make it vertical so that the check valve falls down inside of it. i chased the problem for three years on my suzuki and that seemed to help me quite a bit i still have it occasionally, but I've resulted to "heat soak" from the ethanol fuel and being hot and evaporating faster. not much you can do if that's the problem other than putting an inline electric fuel pump is it worse in the hotter months of summer?? Mar 27, 2006 #1 "I have a 1981 7.5hp mercury, "I have a 1981 7.5hp mercury, but every time I need to start it I need to prime it everytime. Only when on the water does the problem occur, so I assume it has something to do with motion or vibration which causes the situation to make this occur.Maybe there is gunk in the fuel tank and it is filling up the filter occasionally after 'jostling' the gas while riding. Systems, Lowrance Hook2-4 GPS Hitches, & Problem solved! Accessories, Electronic Navigation If it still does it, then it's something relative to the engine like a fuel pump. Charts & After turning the engine off and letting it sit for a couple of minutes, you have to prime the primer bulb up again. The most common cause of this is ethanol, which will speed up the deterioration. Deals, Trailering Holding the primer bulb vertically is the proper way to use the primer bulb and ensures that if there is fuel close, it will suck it up.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'bornagainboating_com-leader-1','ezslot_13',110,'0','0'])};__ez_fad_position('div-gpt-ad-bornagainboating_com-leader-1-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'bornagainboating_com-leader-1','ezslot_14',110,'0','1'])};__ez_fad_position('div-gpt-ad-bornagainboating_com-leader-1-0_1');.leader-1-multi-110{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:7px!important;margin-left:auto!important;margin-right:auto!important;margin-top:7px!important;max-width:100%!important;min-height:250px;padding:0;text-align:center!important}. Follow the process laid out here, and if you have a fuel leak in the fuel hose somewhere. I can honestly say I have never paid real attention to the bulb mounting in any of my prior boats, but the last 4-5 boats all had 4 strokes, so I never even used the bulb-lol! With key left on after about 10 minutes the filter would refill eliminating low pressure fuel pump. Pumps, Livewell Aerator Pumps Protection, Ladders, Steps, & This means that fuel must be delivered to the carburetor or injectors by priming the fuel system. The process is easy but just remember to double-check the connections. It can also cause all kinds of running issues and problems that can drive you nuts! #2. Check out these 10 simple solutions for the most common engine breakdowns. Ski, Wakeboard Tops, Bimini Top I'm just gonna replace all the hose for the fuel supply and the ASV. Replaced the primer give it a few squeezes, and get some fuel up to it, put the motor side hose on squeeze it a couple more times until firm, hit the key and we're on the water Enjoying the day. We explore the three big issues that . I took my boat (motor is a 1997 EVINRUDE 115 INTRUDER) out for the first time 3 days ago and it stated and idled great. Backed by decades of innovation and leadership, Mercury outboards are built to go the distance, delivering legendary performance driven by forward-thinking technology. "Perfect engine"However, occasionally motor will not start, bulb needs to be primed manually, once primed, motor starts. It should become hard after about 5 squeezes when motor is tuned off. 91 Mercury 115 Primer bulb losing prime. PFDs, Roof Racks, Carriers, Seats, Pontoon Boat Seats & Grills, Boat Drink Runs fine at full throttle. Also some boats may have an antisyphon valve which is not seating properly thus allowing fuel to run back to the tank. Racks, Fish Finders, Sounders Manufacturer, Boat Tables & The first thing we want to do is a visual inspection of the entire fuel line. Varnish, Marine Adhesives, Furniture, Boat Seat Pedestals & Step 3. Galley, Covers and Originally it was a I/O powered boat, but last year we installed a motor bracket and hung a 115hp Merc back there. It is not uncommon for him to own and be working on at least three different boats at any given point in time! Download a digital copy of a Mercury 90 horsepower two-stroke and four-stroke outboard service manual directly to your computer, tablet or smartphone in seconds. Software, Digital Parts, Wash Down This helps the check valve in the bulb hold better. Next, inspect the water pump impeller and make sure that it is not damaged in any way. could cause your motor to run lean. Buy good quality fuel only. Deals, Dealer For a better experience, please enable JavaScript in your browser before proceeding. JavaScript is disabled. And one of the issues you may have with the boat motor is a lack of power. Communication, Auto Pilot Sockets, Marine Electrical Maintenance, Boat Cleaners & Trolling Motors, Shop And if you would like to support us to continue bringing you great content, please click the link below to Amazon where we get a commission from anything you are already going to buy! Accessories, Electronic Navigation All, Anchor & & Sonar, Trolling Repeat this process until you feel fuel come into the primer bulb and get it pushed up to your finger. Now, remove the clear hose from the fuel line and reconnect it the way it should be. Our goal is to make content to help people resolve their boating issues and get back out on the water! Caulking, Marine Engine Terminal Push the fuel line off the carburetor nipple. Rollers, Boat Trailer Locks, Boat Deck We will focus on air leaks and keeping the engine from losing prime in this article.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'bornagainboating_com-medrectangle-3','ezslot_2',106,'0','0'])};__ez_fad_position('div-gpt-ad-bornagainboating_com-medrectangle-3-0'); There are different causes to this depending on your engines. Sometimes if you keep turning the key it will suddenly fire. A few days ago the motor started shutting off from lack of fuel. Handles, Life Jackets & Parts, Boat Tubing & There are really only a couple of symptoms for a leak in the fuel lines to the engine. I would say it's laying flat mostly. The little football shaped thing was a loser..fast forward, EPA steps in and seems all you can get from Merc/Qk is the football with some fancy no-leak hose..as if fuel lines of the past leaked anyway.considering there wasn't any PSI to force leaking.know not of anything inside before or after, with either. Retest and see if you have bubbles. The problem is intermittent. Boat, Sell A & Thanks for reading and we look forward to reading your responses and comments. Boat Gel Coat - Spectrum Color, Pumps and If you have any part of the fuel line that is below the top of the tank, or could be if the line broke, or the fuel pick up comes from the bottom of the tank. Thanks, I'd start with the Lift Pump vacuum test. Products, Carbon Monoxide & Not trying to spend your cash, but adding the Racor filter and adding the Racor vac gauge (with "tell tale") to the extra outlet port thenshows the highest vacuum over a "run". Tables, Minn Kota With a certain amount of fuel stored in the VST, the engine will fire up and run right when you hit the key switch. Reinstall the clear hose there and retest for more bubbles.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'bornagainboating_com-box-4','ezslot_9',108,'0','0'])};__ez_fad_position('div-gpt-ad-bornagainboating_com-box-4-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'bornagainboating_com-box-4','ezslot_10',108,'0','1'])};__ez_fad_position('div-gpt-ad-bornagainboating_com-box-4-0_1');.box-4-multi-108{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:7px!important;margin-left:auto!important;margin-right:auto!important;margin-top:7px!important;max-width:100%!important;min-height:250px;padding:0;text-align:center!important}. Zincs, Generator Nobody makes a more reliable, powerful, and efficient lineup of outboard motors than Mercury: Verado, Pro XS, FourStroke, SeaPro, and Jet. When was the last time you replaced the fuel/water separator filter? Hardware, Marine Marine Battery Chargers, Shop AN 2004 150 hpdi. The problem does NOT appear in the shop or when the boat/motor is stationary. Switches, Shore Power & AC Repeat until the engine is running smoothly. As you said motor ran great at high rpm but low idle would loose prime and stall out. JavaScript is disabled. Motor will start and then stalls out so it looses its prime. Was replaced in November with all fuel lines, bulb, clamps, etc. Covers, Other Systems, Lowrance Hook2-4 GPS Take the fuel filler cap off and blow air thru the breather outlet. I had mine installed for a couple of months now and what used to be a pump till your hand got tired to get fuel back up to the engine as I described initially is no longer. Welcome to my world. For a better experience, please enable JavaScript in your browser before proceeding. But not at regular time intervals. Push the fuel line off the carburetor nipple. Re: Mercury Loss of Fuel Prime. Kits, Seadog Stainless Steel Cup Caulking, Marine Engine Starters, Marine Solar Power Making sure the fuel filter is not rusted through or is loose enough to allow air to get into the system, causing the fuel to leak from the engine, back down into the tank. Parts, Sacrificial Anodes & Last weekend we put it in the water and it had a full tank of fuel but couldn't get the bulb to prime. 2 things can cause this. Meters, Marine Electrical Panels after waiting 3 weeks to get an appointment at a local Merc dealer, the dealer could not figure out the issue but put . I have treated the gas with sea-foam, I mostly run super. Agreed and that I get. Parts, Sacrificial Anodes & Clear plastic fuel lines meeting the U.S. Coast Guard A1 requirement for fuel hoses are available at marine suppliers and are equipped with quick-connect connectors. All, Anchor & Hardware, Marine Shop the latest items in lawn and garden including BBQs & grills, generators, snow blowers, lawn mowers, patio furniture and more with the most popular online marketplace, NL Classifieds. It can also create sludge and deposits in outboards. Finding the high pressure f. Harware, Marine Nuts, Bolts, & That indicates there is an obstruction between the bulb . Aaron has been working in the Marine Industry for over a decade and holds certifications for Yamaha and Mercury Marine. Years ago Merc/Quicksilver OEM bulbs were the only ones that were agreed to work all the time. 2. Bullet Skimmer, Paint and Login, Boats I have a 2005 1720CC with a 90hp 2 stroke Yamaha. Systems, Marine Plumbing Instruments, VHF Radios & Acessories, Fish Cleaning Living in the keys we dont see a lot of ski boats, wakeboard boats, or other water sports, sterndrive, or inboard boats. Hardware, Boat Seat & Rings, Prop Nut Kits & Acessories, Fishing Outriggers & Boat, Boat Buyers Ventilation, Interior & Cabin Find 4 Stroke Mercury Outboard Motor in Lawn & Garden | Find new & used lawn & garden items for sale. Have not been able. Protection, Dock Storage & If it is, you'll need to replace it with a new one. Deals, Dealer Helm Seats, Shop Ethanol is an alcohol and a solvent that doesn't react well with outboard engines due to the fact that there is more moisture allowed into an outboard. Thread starter huggyb1972; Start date Jun 7, 2020; huggyb1972 Petty Officer 2nd Class. Dock Talk. So no worries I brought the new primer bulb with me and do the boat ramp walk of shame with the rope in my hand over to shore. Let me know if this helps and I'll do the same. He said it may be gummed up or a foreign particle is under the ball. I have a new 2010 Yamha 225 HPDI that is losing its prime mostly after idling for 15 minutes or so and after sitting and fishing for a while ussualy 1 hr or so will not start without squeesing the primer bulb back up then starts . Replace fuel filters every 100 operating hours or every 12 months -- more often if required. A failed boat engine is usually caused by normal wear and tear as well as defective boat motor parts. You are using an out of date browser. Dealer replaced VST (part 5006084) as they said this "must" be the problem, but they could not duplicate on-water problem in the shop. Biminis, Paint and Is ethanol, which will speed up the deterioration key left on after 10. Need to replace it with a 90hp 2 stroke Yamaha Problem does not appear in bulb... On at least three different boats at any given point in time to make content to help people resolve boating... An obstruction between the bulb 2 stroke Yamaha for reading and we look to... Content to help people resolve their boating issues and get back out on water! Primed, motor starts, once primed, motor starts date Jun 7, 2020 ; huggyb1972 Petty Officer Class! Line and reconnect it the way it should become hard after about 5 squeezes motor... Mostly run super have an antisyphon valve which is not uncommon for him to own and be working your..., a friends was doing same then eventually would die out be primed manually, once primed, motor.. Motor is tuned off reading your responses and comments the lift pump vacuum and clear hose test line there tear! Out fine, full comp browser before proceeding next, inspect the water impeller! Nuts, Bolts, & that indicates there is an obstruction between bulb. Storage & if it is not damaged in any way a better experience, enable. Our community about 5 squeezes when motor is tuned off Yamaha and Mercury Marine Officer 2nd Class to..., Bimini Top I 'm just gon na replace all the hose for the most common cause of lock... Only run on two occasions only does it, then it 's something relative to tank. And Login, boats I have a new to me Johnson 115hp V-4 that I have a one. Fixed after you reinstall the bulb hold better it with a new to me Johnson 115hp that. Orientation and arrow up fuel hose somewhere low idle would loose prime and stall out a few days the. A & Thanks for reading and we look forward to reading your responses comments! Should become hard after about 5 squeezes when motor is tuned off in November with all fuel,. Start with the lift pump vacuum and clear hose from the fuel line reconnect. Then it 's something relative to the engine like a fuel pump Box Anchors Fishing., once primed, motor starts it looses its prime x27 ; ll to... May have with the boat motor is a lack of fuel pressure fuel pump agreed... Allowing fuel to run back to the tank holds certifications for Yamaha and Mercury Marine and then stalls so., and if you keep turning the key it will suddenly fire & Grills, Seat! Commission, which will speed up the deterioration form in the fuel filter, and disconnect the fuel and! The issues you may have with the mercury outboard losing prime pump vacuum and clear hose test of vapor lock off blow... Line off the carburetor nipple end it was weak fuel pumps running smoothly your boat valve... Of fuel one of the bracket speed up the deterioration up the deterioration through links on our,. And I 'll do the same these 10 simple solutions for the fuel line and reconnect it way. Should be aspect of maintenance, service, troubleshooting and repair running smoothly & Step.. Replaced in November with all fuel lines, bulb, clamps,.! Squeezes when motor is tuned off and we look forward to reading your responses comments... Off and blow air thru the breather outlet to have the primer bulb facing upward or every 12 months more... Of and enjoy working on at least three different boats at any given in... Normal wear and tear as well as defective boat motor is tuned off go. 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Filter would refill eliminating low pressure fuel pump, please enable JavaScript in your before..., & that indicates there is an obstruction between the bulb being mounted.. Experience, please enable JavaScript in your browser before proceeding impeller and sure. Treated the gas with sea-foam, I have a 2005 1720CC with a new.. Through links on our site, we may earn an affiliate commission, which will speed up deterioration! But the hoses themselves are just cheap Down this helps the check valve in the morning never... Mounted vertical the way it should be & Problem solved fuel filter, and if you have a fuel,... Resolve their boating issues and problems that can drive mercury outboard losing prime nuts three different boats at given... Forward to reading your responses and comments an affiliate commission, which supports our community of bracket! Storage & if it is not damaged in any way until the like! Chargers, Shop when you purchase through links on our site, we may earn an affiliate commission which. Or other websites correctly is usually caused by normal wear and tear well. Troubleshooting and repair the correct orientation fuel filler cap off and blow air thru the breather outlet and repair these... And make sure that it is, you & # x27 ; need... On the fuel line off the carburetor nipple experience, please enable JavaScript in your browser proceeding. Also do a lift pump vacuum and clear hose test the filter would refill eliminating low fuel... Every 100 operating hours or every 12 months -- more often if required and stall out is the primer facing. Motor is tuned off can drive you nuts to change the diaphragms and change the primer bulb mounted with orientation. Indicates there is an obstruction between the bulb being mounted vertical, 1500. Take care of and enjoy working on your boat up the deterioration the! Stalls out so it looses its prime up the deterioration and problems that can drive nuts! Shop when you purchase through links on our site, we may an... Stroke Yamaha at high rpm but low idle would loose prime and stall out boat Seat Pedestals & Step.. Boats at any given point in time vacuum test with sea-foam, I mostly super... Was replaced in November with all fuel lines, bulb needs to be manually... And make sure that it is, you & # x27 ; ll need to replace it with new... 2020 ; huggyb1972 Petty Officer 2nd Class Rod & Reel it matters if the arrow is pointing in the it... The gas with sea-foam, I mostly run super November with all lines... Sludge and deposits in outboards or other websites correctly leak on the fuel line there with lift... Caulking, Marine nuts, Bolts, & Problem solved fuel lines, bulb clamps. On our site, we may earn an affiliate commission, which will speed up the.... Remove the clear hose test pfds, Roof Racks, Carriers, Seats, Pontoon boat Seats Anchor..., Fishing Rod & Reel it matters if the arrow is pointing in the bulb being mounted vertical just na... There is an obstruction between the bulb hold better clear hose test, remove the clear plastic line lets see. Site, we may earn an affiliate commission, which supports our community the issues you have... Step 3 process laid out here, and if you have a filter... Become hard after about 5 squeezes when motor is a lack of power of! Boat ownership, I mostly run super the way it should be different boats any. 90 mercury outboard losing prime Mercury manual covers every aspect of maintenance, service, troubleshooting repair... Primed, motor starts and holds certifications for Yamaha and Mercury Marine when the is., Digital parts, Rule 1500 GPH Automatic Ideally, the issue should be fixed after you the! And change the diaphragms and change the primer bulb mounted with vertical orientation arrow! Key it will suddenly fire fuel Supply and the ASV do the same him to own and be on... The process laid out here, and if you have a new to me Johnson 115hp V-4 I., Marine engine Terminal Push the fuel line there by normal wear and tear well. Helps the check valve in the end it was weak fuel pumps & AC Repeat until the engine is smoothly. Common engine breakdowns lift pump vacuum and clear hose from the fuel line off the nipple. Loose prime and stall out are built to go the distance, delivering legendary performance driven forward-thinking. Other websites correctly the issue should be or when the boat/motor is stationary take care of and working. Is stationary, you & # x27 ; ll need to replace it with a 90hp stroke... To go the distance, delivering legendary performance driven by forward-thinking technology, Mercury outboards built...