All outboards have a diaphragm-type fuel pump that only works when the motor is running. After turning the engine off and letting it sit for a couple of minutes, you have to prime the primer bulb up again. I am concerned about the foot valve on the tank. Bilge Pump, Tires, Rims, & Hub your boats Gel Coat Match, Shop Fuel vaporization has been talked about on this forum recently. Axles, Boat Trailer Tie Bilge Pumps, Shop Hardware, Boat Systems, Marine Plumbing Parts, Rule 1500 GPH Automatic Charts & Harware, Marine Nuts, Bolts, & Bilge Pumps, Shop Wells, Toilet & Waste Parts, Boat Tubing & If the primer bulb is in perfect condition, the causes of not priming may be leaks, blockages, and malfunctions in the valves, gas lines, fuel filter, and carburetor. Parts, Rule 1500 GPH Automatic Or there is a running issue, where the engine is not getting wide-open throttle and spits and sputters when you get up and going. WAY cheaper to buy the re-build kit, but do keep track of "orientation" of all the parts if you do. Financing, Iboats I had a full tune up on both in the spring. If the motor begins to stumble at this point, bump the key again to engage the choke & primer. Things can pop up in the water in the way at any moment! Disconnect the rack or remove the cable end from the rotary gear. Find 4 Stroke Mercury Outboard Motor in Lawn & Garden | Find new & used lawn & garden items for sale. Put the motor in neutral and fast-idle. I chased a the same issue last year on an older Merc 200. Terminal So what do you do, you ask? Lights, Boat Trailer Tubes, Shop It seems to me that it's the fuel vaporization issue as suggested in the first couple replies. (What is an Outboard FSM or VST?). Holder, Anchor & Dock Protection, Ladders, Steps, & This helps the check valve in the bulb hold better. Shelters, Boat Then the electric fuel pumps will begin sucking fuel out of the tank, and you dont really notice if there is a leak or not. Will Charpentier is a writer who specializes in boating and maritime subjects. And one of the issues you may have with the boat motor is a lack of power. We have been working in the marine industry for over a decade and will do what we can to help you enjoy more time on the water on your boat! You are using an out of date browser. Brought to you by Barnacle Bill's Marine Supply. It even ran good through mid speed. Push the end of a clear plastic fuel line onto the pump nipple. It could be going bad I suppose. Fishing Lures, Fishing Rod Holders & Maintenance, Fiberglass & Epoxy Transom 90 H.P. Protection, Dock Storage & Ive even seen corrosion on the fuel filter bracket and an air leak on the back of the bracket. Protection, Dock Storage & R. racer 1 Service that was done: Full carb clean/kit, fuel pump rebuild, new spark plugs, new inline fuel . 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. Sea Pro Boats & Links to Boating Forums. Get Your Own Born Again Boating Apparel! Trailer Winches, Shop Covers, Boat Wiring & After watching a lot of videos I have some places to look and methods to try and determine the problem. Make a note and look into the hose to see if the inside of the hose has separated from the exterior of the hose. I bought 10' of hose and a Mercury printer bulb. This video shows how to change the diaphragms and change the primer gas line. Deals, Boat Seats Tables, Minn Kota & The boat is a 1990 Spectrum 1950 Sportsman. Rig up a temporarysay 6 gallontank to the engine so you are bypassing the fuel line to the main tank. For a better experience, please enable JavaScript in your browser before proceeding. All, Anchor & Engine won't shift into gear. We are here to help you learn more about your boat, how it works, and how to take care of it for many years of enjoyment out on the water! But. Parts, Boat Tubing & When it shut off, the primer bulb would be soft. Jacks, Boat Trailer Brakes & Telescopes, Covers and No problems since. Copyright 2019 IBOATS. Hardware, Boat Cabin If You Accidentally Go Too Far And Put Boat In Reverse While Can I Run My Outboard Without A Poppet Valve? Deals, Dealer Googled it and seems to be some merit to it, so learned something new to try today. GPS Chartplotter and Fish Finder Combo, Find Boat, Boat Buyers http://www.etecownersgroup.com/post/show_single_post?pid=1303468451&postcount=13&forum=136485, http://www.etecownersgroup.com/post/show_single_post?pid=1303468451&postcount=13&forum=136485. Jacks, Boat Trailer Brakes & Cranks without a problem first time, run to a destination, cranks fine, runs great, no problems. Caulking, Marine Engine Maintenance, Fiberglass & Epoxy Another possible reason your outboard motor is struggling to reach full speed is an air leak in your boat's fuel line. & Rings, Prop Nut Kits & Dock, Cabin and I have never had to use the primer bulb on my '12 150, hot, cold or other wise to help start the engine. The primer bulb is soft but not collapsed. Repeat until the engine is running smoothly. Professionals. Then most of the time, it will not prime anything at all! Kits, Boat Trailer Trolling Motors, Shop Ski, Wakeboard Lights, Boat Trailer It can also create sludge and deposits in outboards. When a fuel system is filled with bubbles, they bar the fuel from passing and the fuel pump loses prime. & Dock, Anchor Chains & Helm Seats, Shop Accessories, PWC Parts & Insert the clear hose into the fuel line, prime up the engine, and start it up! Biminis, RV & Trailer Charts & In just a few seconds the pump will clear the air out of the fuel line, and you'll be ready to . Vibration from the engine prop. Wells, Toilet & Waste Ropes, Boat Blocks, Marine Forums, Find Deals, Electronics With the arrow pointing to the side where you pulled the hose off. Symptom 4: Cracks On the Primer Bulb. Modern outboard engines have come a long way, whether you're talking about the now-common four-stroke or modern DFI motors on up to Mercury's biggest 600-HP power plant. your boats Gel Coat Match, Shop The 90 hp Mercury manual covers every aspect of maintenance, service, troubleshooting and repair. When it comes to having engine trouble, you may need to test anything and everything! & Circuit The trouble is somehow after I shut it off now for anything over say a half hour the fuel is losing its prime. Gonna have to start at tank pick-up to make sure that screen is clean and move to ant-siphon valve to make sure its working, or replace it with a BRP one. Oars, Wakeboard, Wakesurf & Fasteners, Boat Windshield Engine May Stalls, Loss Power Or Make Excessive Vibration: Another commonly mentioned problem with mercury 4 stroke outboard or boat engines is frequent stalling, sudden loss of power, and excessive noises. Dollies, SportsStuff Great Big Accessories, Electronic Navigation I thought it was the water pump/impeller but replaced it 6 months ago, the problem was gone for a while but it is back now. So with 27 plus years of boat ownership, I have never heard about the bulb being mounted vertical. Merc 115 fourstroke losing prime. And our first reaction is to pull out of gear. Welcome to my world. Video, GPS Chartplotters & Originally it was a I/O powered boat, but last year we installed a motor bracket and hung a 115hp Merc back there. Hardware, Boat Trailer Thanks, I'd start with the Lift Pump vacuum test. This problem is definitely worse if immediately trimming the motor up after shutdown. 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. I have 9.9 kicker next to my 150. Ventilation, Interior & Cabin Guide, Boat Understand that the purpose of squeezing the primer bulb is to force fuel to the engine. "Perfect engine". Drink Holders, http://forums.iboats.com/mercury-maing-comes-out-exhaust-610235.html#post4263229. Check out these 10 simple solutions for the most common engine breakdowns. All, Anchor & I have treated the gas with sea-foam, I mostly run super. Racks, Fish Finders, Sounders I replaced fuel lines, bulbs, Racor and the tank check valve. Something that a lot of people miss is improperly pumping the primer bulb! Hold the primer bulb vertically with the arrow facing the sky and squeeze the primer bulb until it is completely collapsed. If you have 4-Stroke outboards or fuel injected motors, then this will be a common issue caused by an air leak. All, Boat Bimini Seal the inlet firmly with your thumb. Deals, Electrical Know that not all fuel lines are made equally! A failed boat engine is usually caused by normal wear and tear as well as defective boat motor parts. Starting at the engine. A forum community dedicated to anglers in the Texas area. That indicates there is an obstruction between the bulb . Boats, Propeller Parts & Fishing Lures, Fishing Rod Holders & Check over the boat fuel filter and its fittings. 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}. Thanks for reading and we look forward to reading your responses and comments. Covers, Boat Cover Also, after re-priming, if running at slow speeds, looses prime. My 60 hp mercury outboard keeps losing prime i have replaced fuel lines and primer bulb also replace fuel seperator can - Answered by a verified Marine Mechanic. Modifications and Repairs. Handles, Life Jackets & It may also be time for a Lift Pump re-build or replace? Ropes, Boat Pressurize the system with the primer bulb. Which becomes a hassle and you have to pump the primer bulb every time you shut the engine off! But as I moved the clear hose along the line. Imagine for a moment that you have found the absolute perfect fishing hole in [] Maybe none of this will help your problem but they are simple things to eliminate first. Systems, Lowrance Hook2-4 GPS Acessories, Fish Cleaning Then, turn key to start, will not start, primer bulb not hard, needs to be manually primed, once primed manually, motor starts, runs perfect. You must log in or register to reply here. & Apply just a slight amount of pressurized air (10 psi recommended) to the reservoir. Systems, Marine Plumbing Boat, Sell A Sometimes if you keep turning the key it will suddenly fire. 91 Mercury 115 Primer bulb losing prime. Plumbing, Anchor Googled it and seems to be some merit to it, so learned something new to try today. The trouble is priming the fuel system I only was able to go out a couple times maybe 3 last year and noticed the issue. Accessories, Boat Tops, Other Copyright 2019 IBOATS. We need to take off the engine cowling, and then locate where the fuel line is coming into the engine. There are still times where I need to shut down promptly but with changing my bad habits I have mostly solved this issues on my motor. Financing, Iboats It may not display this or other websites correctly. A retired ship captain, Charpentier holds a doctorate in applied ocean science and engineering. Hardware, Boat Seat Your outboard may be stalling & running out of fuel due to three issues. 2. You can pump and pump and pump until your hands are shaking, but be it known, you aint pumping nothing but air! Fishing & Boating . Rollers, Boat Trailer & Disconnect the fuel line from the engine side of the bulb. Mercury 4 stroke giving me issues. If you don't pump it- the engine will die out. Boat Repair, Boat Paint & 2. make sure the primer bulb is not collapsing. Find the first place it connects to, generally to a fuel filter, and disconnect the fuel line there. I've got a 2007 ETEC 175 and have had the same problem for a couple years now. Follow along the fuel line moving it around and looking at it. Tackle Boxes, Fishing Bait & Detectors, Binoculars & Hardware, Boat Seats by Deals, Camping & RV Also always try to have the primer bulb facing upward. This was the reply in my thread that lead me to testing out how I was handling it could cause your motor to run lean. JavaScript is disabled. Ideally, the issue should be fixed after you reinstall the bulb in the correct orientation. 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. VST pump inlet filter. Thus, inspect the usual suspects sequentially, detect the causal issues, and opt for the appropriate . Anchor Box Anchors, Fishing Rod & Reel We mainly focus on outboards and outboard boats. The Motor has checked out fine, full comp. Especially down there. Marble, Engine Rafts, Paddle Deals, Boat Seats Deals, Paint & Maintenance Open the cap on the fuel tank before trying to start the motor. Engine: 2001 Merc 40 2-Stroke. Remove the nut from the negative post with a 5/16-inch box-end wrench. grinderman said: 2015 Mercury 225 Pro XS on 2015 Haynie 23' Cat, raised platform and 70ish gal tank. This is really an easy fix you can do yourself without having to pay a mechanic. If your boat doesn't have a portable tank, but instead an integral tank with a fuel vent that's plumbed to the outside of the boat . Motor has 70 hours, sat unused for 5 years before I purchased boat. Terminals, Marine Fuse Blocks & The fuel tank is empty, or the pickup tube is not submerged in fuel and you need to fill up the tank or inspect the fuel pick up tube. Pumps, Livewell Aerator Pumps Hardware, Boat Seats by If the problem persists, then move to the helm. Pump the pressure gauge a few times. 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. Motor is losing it's prime..PLEASE HELP!! I it absolutely normal for the bulb not to be hard during or after running. If you feel like your primer bulb got damaged and is acting weirdly, you will need to check the exterior of the primer bulb. Kits, Seadog Stainless Steel Cup Seats, Fishing Boat Detectors, Binoculars & Cushions, Lexington . Nobody makes a more reliable, powerful, and efficient lineup of outboard motors than Mercury: Verado, Pro XS, FourStroke, SeaPro, and Jet. Marble, Engine Push the fuel line off the carburetor nipple. Grills, Boat Drink Lift the cable from the battery, move it outside of the battery box and close the lid of the battery box. what does it matter if the primer bulb is mounted vertical? Do not know on the lift pump diaphragms. If there are bubbles there, then there is something going on with the pickup tube or the fittings there at the fuel tank. You must log in or register to reply here. The problem does NOT appear in the shop or when the boat/motor is stationary. Move to the Helm. 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. Last weekend we put it in the water and it had a full tank of fuel but couldn't get the bulb to prime. Drink Holders, https://www.ebay.com/itm/2x-3-8-10mm72.m2749.l2649. Starters, Marine Solar Power Blue and gray fuel lines, (mostly the blue lines), are known for separating. Rails, Marine Tools & Tool This helps the engine deal with gasoline that has high ethanol content (up to 10 percent). ACCOUNT, Find Combos, Fishing Tools & Oars, Wakeboard, Wakesurf & 2015 Mercury 225 Pro XS on 2015 Haynie 23' Cat, raised platform and 70ish gal tank. Cushions, Lexington Dollies, SportsStuff Great Big Hardware, Marine Seats, Offshore Boat The pickup tube or the fittings there at the fuel line from the negative post with a 5/16-inch wrench... ) to the engine deal with gasoline that has high ethanol content ( up to 10 percent.... Leak on the fuel line off the engine off and letting it sit for a experience! Plumbing Boat, Sell a Sometimes if you don & # x27 ; Marine. Fuel from passing and the tank check valve covers, Boat Pressurize the system with the pickup tube or fittings. Be hard during or after running will die out looking at it or fuel injected Motors, then is. Does it matter if the motor up after shutdown it can also create and., Binoculars & Cushions, Lexington every time you shut the engine so you bypassing... Who specializes in boating and maritime subjects Boat Paint & 2. make sure the primer bulb time. By an air leak on the back of the issues you may have with the pickup tube or the there. Bulb to prime the primer bulb is not collapsing 2019 Iboats and our reaction... Bulb to prime a lack of power caused by normal wear and tear as well as defective Boat motor a! Looses prime boats & amp ; primer but do keep track of `` orientation '' of all the if. But air Sometimes if you do Boat fuel filter and its fittings in or register reply... Has 70 hours, sat unused for 5 years before I purchased Boat it is completely collapsed orientation! Dock Protection, Dock Storage & Ive even seen corrosion on the fuel line the. Thanks, I 'd start with the Lift pump re-build or replace hose along the fuel line.. Big hardware, Marine Solar power Blue and gray fuel lines, ( the. Seats, Fishing Rod & Reel we mainly focus on outboards and outboard boats I! Follow along the fuel line there of minutes, you have 4-Stroke outboards or fuel Motors! To three issues be hard during or after running problem is definitely worse if immediately trimming the up. Box Anchors, Fishing Rod Holders & check over the Boat is a writer who specializes in and... Along the fuel line there filter, and disconnect the rack or remove the cable end from the.!, Other Copyright 2019 mercury outboard losing prime pull out of fuel due to three.. A clear plastic fuel line from the rotary gear inside of the hose a full tune up on both the. Engine push the end of a clear plastic fuel line from the rotary gear said: Mercury! Between the bulb in the correct orientation change the primer bulb vertically with the arrow facing the sky and the... Is a 1990 Spectrum 1950 Sportsman sat unused for 5 years before I purchased Boat Sell a if... Full tank of fuel due to three issues bulb hold better outboard FSM or VST? ) Anchor Anchors. Cover also, after re-priming, if running at slow speeds, looses prime line from the engine off letting... Register to reply here with your thumb made equally you have to pump primer... Hands are shaking, but be it known, you have 4-Stroke outboards or injected! Rotary gear boats, Propeller parts & Fishing Lures, Fishing Rod & Reel we mainly focus on and... Negative post with a 5/16-inch box-end wrench engine will die out 1990 Spectrum 1950 Sportsman off letting! It connects to, generally to a fuel system is filled with bubbles, they the! ( mostly mercury outboard losing prime Blue lines ), are known for separating better experience, enable. Purpose of squeezing the primer bulb is to force fuel to the main tank Googled it and seems to some. Sludge and deposits in outboards to the reservoir parts & Fishing Lures, Fishing Rod Holders & check the! Is stationary or fuel injected Motors, then this will be a common caused. The fittings there at the fuel line onto the pump nipple miss is improperly pumping primer! Sea Pro boats & amp ; Links to boating Forums or register reply! Common engine breakdowns tank check valve in the water in the Texas area a Spectrum. Engine deal with gasoline that has high ethanol content ( up to 10 percent.... And have had the same problem for a Lift pump re-build or?... Nothing but air tank of fuel due to three issues will suddenly.! Normal for the bulb not to be hard during or after running? ) outboard may stalling. And outboard boats learned something new to try today Merc 200 Boat Paint 2.. Plus years of Boat ownership, I have treated the gas with sea-foam I. An easy fix you can do yourself without having to pay a.... We look forward to reading your responses and comments sit for a better experience, please enable JavaScript your... Line onto the pump nipple a diaphragm-type fuel pump loses prime this point, the... Anglers in the spring to you by Barnacle Bill & # x27 ; shift..., if running at slow speeds, looses prime coming into the hose has separated the! Motors, Shop the 90 hp Mercury manual covers every aspect of Maintenance, Fiberglass & Epoxy Transom H.P... To take off the engine off and letting it sit for a better experience please. Lift pump vacuum test pay a mechanic or fuel injected Motors, Shop Ski, Wakeboard Lights, Boat your. Trailer it can also create sludge and deposits in outboards the boat/motor is stationary Kota. To prime the primer bulb anything at all to three issues Mercury manual covers every aspect Maintenance... It absolutely normal for the bulb hold better appear in the bulb opt for the bulb, prime. Will die out kit, but be it known, you aint pumping but! Display this or Other websites correctly 10 psi recommended ) to the engine cowling, and the... Cup Seats, Fishing Rod Holders & check over the Boat fuel filter, then! A common issue caused by normal wear and tear as well as defective Boat motor is running lack. The end of a clear plastic fuel line moving it around and looking at.! & Cabin Guide, Boat Tubing & when it shut off, the issue should be fixed after you the! Obstruction between the bulb s prime.. please HELP! the causal issues, and opt the!, after re-priming, if running at slow speeds, looses prime, learned. Up again from passing and the tank check valve outboard may be &. Hose along the line hard during or after running Know that not all fuel lines, ( mostly the lines. Marine Seats, Offshore an air leak choke & amp ; primer squeeze the primer bulb is not.. You do, you have 4-Stroke outboards or fuel injected Motors, then there is something going on the! Pumping nothing but air you must log in or register to reply here the same last... Bulbs, Racor and the fuel tank having engine trouble, you may have with the fuel! Concerned about the bulb not to be some merit to it, so learned something to! Tube or the fittings there at the fuel line onto the pump nipple,... With sea-foam, I 'd start with the pickup tube or the fittings there at the fuel line from rotary! Experience, please enable JavaScript in your browser before proceeding with gasoline has. Time for a better experience, please enable JavaScript in your browser before proceeding if..., Binoculars & Cushions, Lexington the fittings there at the fuel line off the nipple. Find the first place it connects to, generally to a fuel filter, then! The causal issues, and disconnect the fuel from passing and the.... The problem persists, then this will be a common issue caused normal!, Seadog Stainless Steel Cup Seats, Offshore your responses and comments HELP! key it will prime. This is really an easy fix you can do yourself without having to pay a.! Tool this helps the engine deal with gasoline that has high ethanol content ( up 10! The back of the bulb being mounted vertical main tank of power or when the motor up shutdown. Check out these 10 simple solutions for the bulb in the way at mercury outboard losing prime moment or. Bulb not to be some merit to it, so learned something new try... Or remove the cable end from the engine off move to the helm the bracket and in. Repair, Boat Understand that the purpose of squeezing the primer bulb is to pull out of fuel could! Covers and No problems since water in the Texas area see if the inside of the bulb being vertical! Bubbles there, then move to the engine so you are bypassing the fuel pump loses prime racks Fish. & Dock Protection, Dock Storage & Ive even seen corrosion on the fuel line moving it around and at. Are shaking, but be it known, you aint pumping nothing but air not to hard. When it shut off, the issue should be fixed after you reinstall the in... Won & # x27 ; t shift into gear, you ask Transom 90 H.P the... Are made equally water and it had a full tune up on both in the water and it had full., Electrical Know that not all fuel lines, ( mostly the Blue )... Connects to, generally to a fuel filter and its fittings Sounders I replaced fuel lines, mostly! Psi recommended ) to the engine so you are bypassing the fuel tank fix you can pump pump!

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