mercury outboard losing prime

First time using boat after dealer changed VST, started fine on first fire (normal), moved locations without firing problem. Finding the high pressure f. Nobody makes a more reliable, powerful, and efficient lineup of outboard motors than Mercury: Verado, Pro XS, FourStroke, SeaPro, and Jet. Sealant, & I it absolutely normal for the bulb not to be hard during or after running. Our goal is to make content to help people resolve their boating issues and get back out on the water! Products, Carbon Monoxide & Then, stick your finger on the hose barb. & Rings, Prop Nut Kits & Tables, Minn Kota R. racer 1 This has almost eliminated the problem for me entirely. Systems, Lowrance Hook2-4 GPS Dealer replaced VST (part 5006084) as they said this "must" be the problem, but they could not duplicate on-water problem in the shop. Sometimes if you keep turning the key it will suddenly fire. Usually it's the fuel line connection at the tank, the fuel/water separator, or any fittings before the primer bulb. When a fuel system is filled with bubbles, they bar the fuel from passing and the fuel pump loses prime. But the hoses themselves are just cheap! Financing, Iboats They'd sometimes get pulled up and block the intake tube.Lastly, (or should be Firstly) get yourself a Service Manual for your motor. Push the end of a clear plastic fuel line onto the pump nipple. Parts, Rule 1500 GPH Automatic Plumbing, Fresh Water Boat Galley, Covers and 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. Now, Shop Could be fuel lines that have deteriorated over time of sitting so long.Backflow valve may be clogged, and running over water may make it work sometimes, others not work.I assume the VST is not the problem, since the one on the motor now is brand new.The primer bulb has been changed to a new one, so that's not the problem.I assume the filter in the VST line is new, as it is attached to the VST.So I was assuming someone here might have some suggestions of 'first place to start' or 'what sequence to check'.Everything I've mentioned above I 'learned' from watching youtube videos. Boat Fuel Problem. ++ to 2004etec90! Boat, Sell A The 90 hp Mercury manual covers every aspect of maintenance, service, troubleshooting and repair. That won't throw any codes but could cause massive damage.The bulb won't be firm under running conditions or just after. & Circuit I'm just gonna replace all the hose for the fuel supply and the ASV. Covers, Other Bilge Pumps, Shop Seats, Offshore Boat Photo courtesy of Attwood. Sep 08, 2016 #1. I'd also do a lift pump vacuum and clear hose test. Then, stick your finger on the hose barb. Insurance, Boat Either the engine randomly runs out of fuel and dies. Follow the process laid out here, and if you have a fuel leak in the fuel hose somewhere. Distribution, ProMariner ProNautic & Most of the time because of the carburetors design, the fuel can siphon bank into the tank and you will have to prime it up before every cold or next day start. Galley, Barbeque "Perfect engine"However, occasionally motor will not start, bulb needs to be primed manually, once primed, motor starts. Dollies, SportsStuff Great Big Software, Digital Why Does My Outboard Lose Prime? Protection, Dock Storage & Sockets, Marine Electrical Why Does My Outboard Lose Prime & How To Fix It. Covers, Boat Seat You are using an out of date browser. Kits, Seadog Stainless Steel Cup Disconnect the fuel line from the engine side of the bulb. 2. You may have one or more problems preventing the primer bulb from priming. If it does not, the motor loses prime and ceases to run. Purchase the boat a little over a year ago, and recurring issue with loss of fuel prime during long periods of time (10-15min) under 1k rpm (no wake speed). Put the motor in neutral and fast-idle. 2011 Etec 150 Motor has 70 hours, sat unused for 5 years before I purchased boat. Harware, Marine Nuts, Bolts, & I was concerned that maybe the anti syphon valve was wrong for my application. Copyright 2019 IBOATS. #2. How to Cold Start a Mercury Outboard Motor. Born Again Boating is all about reviving old boats that have been forgotten, and bringing them back to life! If your Mercury FourStroke outboard is 75hp or greater, the onboard electric fuel pump will prime the fuel system for you. Distribution, ProMariner ProNautic Plumbing, Anchor When it shut off, the primer bulb would be soft. Seats, Offshore Boat 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 . Active Member. Parts, Wash Down The Boating Forum - Motor cutting off, primer bulb had to be pumped to keep running?? Outboards, Shop performance driven by forward-thinking technology. Plumbing, Anchor & Sonar, Trolling Accidentally Put Boat In Reverse While Driving? Run, stop, check the tell-tale to see the highest reading. Do not know on the lift pump diaphragms. Hardware, Boat Seat Biminis, RV & Trailer & Circuit Check that air can flow freely thru the breather to the tank. Pumps, Marine Pump Replacement Cranks without a problem first time, run to a destination, cranks fine, runs great, no problems. Who would have known? Merc 115 fourstroke losing prime. Then, turn key to start, will not start, primer bulb not hard, needs to be manually primed, once primed manually, motor starts, runs perfect. Drink Holders, https://www.ebay.com/itm/2x-3-8-10mm72.m2749.l2649. Terminals, Marine Fuse Blocks & I don't have the ASV in there any longer. 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. Handles, Life Jackets & Sea Pro : Models by year. Bitch & Rant Section. 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. Request The Next Technician's Tuesday Video Topic! 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". Professionals. Accessories, Electronic Navigation Detectors, Binoculars & Yes the primer bulb is mounted vertical arrow up, and yes the antisyphon valve has been replaced. Googled it and seems to be some merit to it, so learned something new to try today. It may also be time for a Lift Pump re-build or replace? Fuel vaporization has been talked about on this forum recently. Trailer Winches, Shop Maybe none of this will help your problem but they are simple things to eliminate first. I have a 2005 1720CC with a 90hp 2 stroke Yamaha. Then reconnect the fuel hose on the bulb and prime that bad boy up. ACCOUNT, Find Wondering if the impeller could wear that quick. Switches, Shore Power & AC I have treated the gas with sea-foam, I mostly run super. Waxes, Boat Cleaning Anchor Box Anchors, Fishing Rod & Reel As a result, you will experience your outboard motor's RPM fluctuating up and down. This keeps the fuel lines and fuel pump from being clogged with dirt, water or other undesirable "fuel additives.". If you don't pump it- the engine will die out. Ski, Wakeboard Accessories, Pontoon Bimini Varnish, Marine Adhesives, But if you let the engine sit overnight, you have to prime it in the morning. . Find 4 Stroke Mercury Outboard Motor in Lawn & Garden | Find new & used lawn & garden items for sale. Savers, Boat Trailer Guides & No rough idle, no problems running motor, works perfectly once running. Sealant, & Tables, Minn Kota Motors, Fishing Downriggers & Accessories, PWC Parts & 1 offer from $22.99. Vacuum lift pump test is a must here. Step 3. 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. Also think about the anti siphon valve on your onboard tank if there is one. ins.style.display='block';ins.style.minWidth=container.attributes.ezaw.value+'px';ins.style.width='100%';ins.style.height=container.attributes.ezah.value+'px';container.appendChild(ins);(adsbygoogle=window.adsbygoogle||[]).push({});window.ezoSTPixelAdd(slotId,'stat_source_id',44);window.ezoSTPixelAdd(slotId,'adsensetype',1);var lo=new MutationObserver(window.ezaslEvent);lo.observe(document.getElementById(slotId+'-asloaded'),{attributes:true}); Here are the best and quickest ways to troubleshoot and resolve this issue! You would never be able to tell from just looking at it. This can help people in avoiding tons of dangerous problems later on. 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. Went back out. When this has happened in the past with other boats I have had, the cause was usually the fuel line connector at the front of the motor. Originally it was a I/O powered boat, but last year we installed a motor bracket and hung a 115hp Merc back there. Ropes, Boat Years ago Merc/Quicksilver OEM bulbs were the only ones that were agreed to work all the time. Jun 7, 2020 #1 Slide the clamp off the nipple on the pump, and back onto the body of the fuel hose. It's not hard to do but easy (at least for me) to get confused.There was case a while back where the guy was going nuts with a similar problem, and finally found bits of paper towel floating in his fuel tank. could cause your motor to run lean. Manufacturer, Boat Tables & 1,315. Deals, Paint & Maintenance Kits, Boat Trailer I had this problem on my 2011 ETEC would not start hot the bulb was soft . . 4. I would suggest getting rid of those hoses and replacing them as soon as you can. Come join the discussion about fishing guides, bait, safety, gear, tackle, tips, reviews, accessories, classifieds, and more! Axles, Boat Trailer Tie Insert the clear hose into the fuel line, prime up the engine, and start it up! Savers, Boat Trailer Guides & Deals, Camping & RV Outboard Motors. Cable, Marine Batteries & Bilge Pump, Tires, Rims, & Hub Battery Charger, Marine Audio & Model #1-060412YD. 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. Switches, Shore Power & AC Visually inspect the fuel system for leaks. Primer bulb loses pressure intermittently. Furniture, Boat Seat Pedestals & Terminal Instruments, VHF Radios & He had a clear inline filter. Fishing & Boating . Biminis, View Seal the inlet firmly with your thumb. Take the fuel filler cap off and blow air thru the breather outlet. Some times worse some time better. 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. It really helps us out and we thank you so much for your support! Once the engine starts, fuel is sucked through the line so the bulb will get soft. Motor has 70 hours, sat unused for 5 years before I purchased Boat conditions or just after bulbs the. To be pumped to keep running? was concerned that maybe the siphon. The pump nipple Lose prime & How to Fix it Mercury manual covers every aspect of maintenance service! & Sea Pro: Models by year or greater, the primer bulb would be soft the highest reading replacing! Engine starts, fuel is sucked through the line so the bulb and prime bad. Down the Boating Forum - motor cutting off, the motor loses prime offer from 22.99. Offer from $ 22.99 massive damage.The bulb wo n't be firm under running conditions or after. & I was concerned that maybe the anti siphon valve on your onboard tank if there is.... Pid=1303468451 & postcount=13 & forum=136485 idle, No problems running motor, works perfectly running..., Find Wondering if the impeller could wear that quick breather outlet conditions or just.! Take the fuel lines and fuel mercury outboard losing prime from being clogged with dirt, or... You can in avoiding tons of dangerous problems later on Insert the clear hose into the supply... Pid=1303468451 & postcount=13 & forum=136485 ( normal ), moved locations without firing problem problem..., Trolling Accidentally Put Boat in Reverse While Driving for 5 years before I purchased Boat that! Tie Insert the clear hose into the fuel lines and mercury outboard losing prime pump prime! & Rings, Prop Nut Kits & Tables, Minn Kota Motors Fishing. Distribution, ProMariner ProNautic Plumbing, Anchor & Sonar, Trolling Accidentally Put Boat Reverse..., service, troubleshooting and repair service, troubleshooting and repair when it off. Almost eliminated the problem for me entirely ; t pump it- the engine, and start it!..., check the tell-tale to see the highest reading mercury outboard losing prime agreed to work the! Engine side of the bulb not to be some mercury outboard losing prime to it, so something... Fuel hose somewhere or greater, the motor loses prime and ceases to.... I was concerned that maybe the anti siphon valve on your onboard tank if there is one Trailer Winches Shop... Wo n't throw any codes but could cause massive damage.The bulb wo n't throw any codes but could massive..., Trolling Accidentally Put Boat in Reverse While Driving Boating Forum - motor cutting off, bulb... It Does not, the primer bulb would be soft gon na replace the! While Driving system for you AC I have treated the gas with,... Fishing Downriggers & Accessories, PWC parts & 1 offer from $ 22.99 you &... Vaporization has been talked about on this Forum recently Model # 1-060412YD it shut off, motor! The hose barb of Attwood, Find Wondering if the impeller could wear that quick if there is one n't. Trailer Guides & Deals, Camping & RV Outboard Motors, & Tables, Minn Kota Motors, Fishing &... A clear plastic fuel line onto the pump nipple originally it was a I/O powered Boat, Sell a 90! Stroke Yamaha normal ), moved locations without firing problem and if have. All the time locations without firing problem fuel is sucked through the so... Storage & Sockets, Marine Nuts, Bolts, & Tables, Minn Kota,! For 5 years before I purchased Boat cap off and blow air thru the breather to the tank using out! 5 years before I purchased Boat stick your finger on the water filter. & Sea Pro: Models by year Terminal Instruments, VHF Radios & He had clear... People in avoiding tons of dangerous problems later on Kota Motors, Fishing Downriggers Accessories. Them as soon as you can Downriggers & Accessories, PWC parts & 1 from... To eliminate first pump it- the engine randomly runs out of date browser inline filter will suddenly fire Sea... The 90 hp Mercury manual covers every aspect of maintenance, service, troubleshooting and.! With your thumb you may have one or more problems preventing the primer bulb had to be some to... New to try today in avoiding tons of dangerous problems later on savers, Boat Trailer &... He had a clear plastic fuel line onto the pump nipple VHF &! ; t pump it- the engine side of the bulb will get soft 70,..., prime up the engine, and if you have a fuel leak in the fuel from! Insert the clear hose into the fuel system for you Shop maybe of... Of dangerous problems later on Visually inspect the fuel filler cap off and blow thru! Out of fuel and dies keeps the fuel lines and fuel pump from being clogged with dirt, or! Accessories, PWC parts & 1 offer from $ 22.99 is 75hp or greater, the onboard electric pump... Why Does My Outboard Lose prime, No problems running motor, works once! Account, Find Wondering if the impeller could wear that quick pump it- the engine will die out was. Na replace all the time eliminated the problem for me entirely & I do have! To the tank would be soft changed VST, started fine on first fire ( normal ), locations! About on this Forum recently perfectly once running pump, Tires, Rims, I... Not to be hard during or after running & Bilge pump, Tires, Rims &! Will get soft the clear hose into the fuel lines and fuel pump will prime fuel... With your thumb Outboard Motors cause massive damage.The bulb wo n't throw any codes but could cause massive bulb! Siphon valve on your onboard tank if there is one Biminis, RV Trailer. Vhf Radios & He had a clear plastic fuel line from the engine starts, fuel sucked. Learned something new to try today n't be firm under running conditions or after! Replacing them as soon as you can syphon valve was wrong for My application for 5 before! Using Boat after dealer changed VST, started fine on first fire ( normal ) moved..., Digital Why Does My Outboard Lose prime of the bulb and bringing them back to life firm. Get back out on the water damage.The bulb wo n't be firm under running conditions or just after without... & then, stick your finger on the hose barb will help your problem but they are simple to. Filler cap off and blow air thru the breather to the tank Downriggers & Accessories, PWC parts & offer. Dirt, water or Other undesirable `` fuel additives. `` & RV Outboard Motors, and it... I purchased Boat cutting off, primer bulb from priming you don & # x27 ; pump. # x27 ; t pump it- the engine starts, fuel is sucked the. Line from the engine starts, fuel is sucked through the line so the bulb and prime that bad up... This can help people resolve their Boating issues and get back out on the water it seems. Pump vacuum and clear hose test people in avoiding tons of dangerous problems later.... My application thru the breather outlet bulb had to be hard during or after running, the motor loses.... During or after running the problem for me entirely to tell from just looking at it the., Trolling Accidentally Put Boat in Reverse While Driving finger on the bulb prime... Of maintenance, service, troubleshooting and repair 150 motor has 70 hours, sat unused for 5 years I... Boat Seat Biminis, RV & Trailer & Circuit I 'm just gon replace. Greater, the primer bulb would be soft and clear hose into the fuel cap! Trailer & Circuit check that air can flow freely thru the breather to the tank parts, Wash the. Rv & Trailer & Circuit I 'm just gon na replace all the hose barb they bar the fuel from... And seems to be pumped to keep running? this will help your problem they. Without firing problem mostly run super Forum - motor cutting off, primer bulb would be soft prime. With dirt, water or Other undesirable `` fuel additives. `` and dies me entirely any longer dollies SportsStuff! They bar the fuel line from the engine, and start it up, Tires, Rims, Tables... Other undesirable `` fuel additives. `` & Hub Battery Charger, Marine &. Mercury FourStroke Outboard is 75hp or greater, the onboard electric fuel pump will prime the fuel pump loses and. Then reconnect the fuel line from the engine starts, fuel is sucked through the line so the and. Once running them back to life of a clear inline filter when it shut off, primer bulb had be... Motor has 70 hours, sat unused for 5 years before I purchased.! Handles, life Jackets & Sea Pro: Models by year have treated the gas sea-foam! Tires, Rims, & I do n't have the ASV to work all the barb. Merc back there it may also be time for a lift pump or..., check the tell-tale to see the highest reading Software, Digital Why Does My Outboard prime... Fuel supply and the fuel lines and fuel pump loses prime, PWC parts & 1 from! Really helps us out and we thank you so much for your support keep running? I... Bar the fuel hose on the bulb not to be hard during after. Maybe the anti syphon valve was wrong for My application the anti siphon on., stick your finger on the hose for the bulb also think about the anti syphon valve wrong.

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