Mercury 40 hp 2 stroke problems
Mercury 40 hp 2 stroke problems. boats. Clymer Marine and PWC manuals are the #1 source for DIY maintenance, troubleshooting and repair. its due to ethanol in the gas which caused the rubber hose to fail. engine overheats. And with outboards ranging from 2. Filled the oil tank to full and it still beeped when started. Cleaned carburetor and replaced all gaskets with Quiksliver parts from the agents. However, like any other mechanical device, Mercury 4-stroke outboards might face occasional problems that require troubleshooting and fixing. I looked into cleaning carburators, changing spark plugs e You have places to go, and the Mercury 40 to 60hp FourStroke family of outboards is the easiest way to get there. Please let me know what you have experienced; tips; tricks; parts; repairs; etc. At plane/ wot - it dies. First thing that I would check, when a motor does not start, is whether there is a good spark. Fuel pump failure: The fuel pump is responsible for supplying the engine with fuel. (I’m 67). May 5, 2009 · 15. Re: 96 40HP Merc bad rectifier/regulator. Aug 30, 2001 · Member. Jul 11, 2019 · My outboard mercury motor was running rough, between 1000 rpm to 4500 rpm and sometimes over that. 1 Regularly Cleaning And Flushing The Outboard Motor. If it doesn’t start with a half dozen pulls, wait 10 minutes and try again. Best oil for the Merc/Mariners is their own Quicksilver brand. These can eventually wear out and leak, especially if not properly maintained. Jul 23, 2022 · Symptom 4: Less Sound While Igniting the Motor. Re: Mercury 40 hp 2 stroke vs 4 stroke cycle. If the bulb is getting sucked flat and such, then that is a better indication of a restriction in the fuel line. Run the engine with the cowl off. If your motor is overheating, you may notice a high-pitched alarm or a reduction in power. 1st trip would go to WOT, but got on plane, second trip, got on plane in the am, would not plane later, last trip , would not plane. Electronic fuel injection for reliable starts and increased efficiency. On a 2 stroke every time the piston goes Mar 24, 2014 · Mar 24, 2014. Jul 8, 2020 · Here's a quick list of parts that have been replaced on the powerhead within the last 4 months leading up to the first sign of trouble for either regular maintenance or repair: - Spark plugs. If it isn't coming from the top end, have a helper sit by the back of the boat. Posts: 31,351. May 10, 2009. Mar 15, 2021 · Your question was - I have a 1995 mercury force 40hp 2 stroke outboard motor that will not start. Nov 27, 2017 · You have two choices for a fix: Wait about 10 minutes and try starting again. Check the connections and then test with VOM. Runs great, starts up on first try. Re: 15 hp Mercury 2 stroke won't run. Jul 13, 2004 · 813. Aug 7, 2009 · inline 4, 40hp 2-stroke question. So what i suggest oyu do at this stage is to fill the carbs with fuel with the primer bulb until it is hard. Re: 40 hp Merc Power Trim Issues. Stroke Not Peeing. Jul 23, 2022 · Symptom 1: Engine Hesitation. Re: Mercury 40 hp alarm. Re: My spark plugs are wet. With your socket wrench, remove the plug. The one that we fear the most is uneven compression. If it goes up and down all the way at dock then you have enough fluid. Brought it home now it will on fire one time it will start and immediately die. IT started 4 trips ago. Mar 26, 2019. Re: 2001 2 stroke 40hp Mercury starting problems. ) Inspect and compare the plugs to each other. We all know the usual sound of the Mercury outboard motor when we ignite this. Oct 12, 2008. and hydro lock is caused by excess fuel in the cylinder. you will need a thermomelt stick or a temp gum. A weak impeller will put out fine and slip at higher RPM This Apr 19, 2023 · Problem #1: Overheating. Understanding this diagram will not only help you troubleshoot electrical problems, but also allow you to customize your outboard Apr 25, 2023 · Problem #2: Poor Performance. Outboard Won’t Throttle. Take the motor hood off and trace the wires from the pump motor up to the trim solenoids mounted on the side of the motor. A helpful video for maintaining your 40-60 FourStroke Engine. My 2002 Merc 40HP idles very rough. Intermittent Beeping. motor won’t get past 3000 RPM. - fuel tank connector. They are not. If it goes up and down at the dock then your motor, relays, wiring, and switch are passing their basic test. Additionally, the tester can be used to test Mercury Outboard EFI injectors. these are good motors but buy. With an automotive charging system the guage should Sep 12, 2004 · Re: 40 HP Mercury stalls when given throttle #2. (do regular routine maintenance myself) If you have one, please tell me the good, the bad, the ugly. Another possibility is a crack in the engine block or cylinder head. Unless you are using a product such a Sea Foam (aerosol) which has oil included, you may be scuffing up your engine internally from running fuel without any lube. I was just up "at the lake" putting in my Father's "toon with a 10 year or so old Merc 40 hp. Then disconnect the fuel connection and try to start. Feb 5, 2007 · 28,765. The sound of the motor would be as low as soothing music in case you want an example. #6. net/product/mercury/821354A2?utm_source=youtube&utm_medium=video&utm_campaign=desc Apr 20, 2023 · Problem 2: Power Loss. The CDI 511-9701 Battery CD Tester is highly recommended due to its ability to fire the Ignition systems up to 3000 RPM without the engine running. Fixes: Replace fuel filter at regular intervals, check and replace spark plugs as needed, drain and refill fuel tank if water contamination is Jun 20, 2012 · Seaman. 5 - 60 HP Two-Stroke Outboard Service and Repair Manuals (Includes Jet Drive Models), 1994-1997 B723This manual covers seventeen Mercury/Mariner 2-stroke outboard and jet drive motors ranging from 2. #2. Power limit will vary with level of overheat. What may be happening is the propeller may be catching some air and creating lots of noise. Oct 13, 2008 · Petty Officer 3rd Class. and finally start up engine and check all parts for overheating. Mar 27, 2019 · 3. Number 1, replace the fuel line and the primer bulb. #9. R. Oil looked good, fired her up and immediately started beeping. Jul 15, 2010 · Jul 14, 2010. Sep 9, 2019 · Heyya! First time post after long time lurking! I bought a used boat 2 or so months ago that had been sitting for a year. Check all hoses / fuel connectors from Tank to Engine for any leaks / wear, ended up just replacing the fuel line from pump to carb. Jul 23, 2022 · If the kill switch looks damaged, replace it and put the gear on neutral before starting the engine. I replaced all sorts of parts snd it was the stinking fuel line. The black wire is a reliable ground. Rebuilt the fuel pump with Quiksliver parts from agents. Remove all six spark plugs, keeping them in order, 1-6. From long runs across the marsh before daylight to endless days spent chasing the next bite, these shallow-water specialists get you to places other boaters can’t or aren’t willing to go. Without revving it, shut the motor. NOTE: Some Yamaha outboards have two thermostats, in which case you would remove them both. Water in the water separating fuel filter reaches the full level. 2 Properly Lubricating Moving Parts. Sep 17, 2011 · Just recently bought a pontoon boat that came with a 40 HP Oil Injected Mercury Outboard motor (4-cylinder). Engine Guardian System is activated. Close the vent screw after all air bubbles are eliminated from the system. It can be used to test the CD module, distributor cap, Ignition coil and plug wires. This issue can be caused by a variety of factors, such as a blocked water intake, a damaged impeller, or a clogged cooling system. Hello everyone, first time poster, first time caller, so forgive me if I leave out some important detail I should have included. I just got the boat and had it out about 4 times in the last 10 days. #1 · May 26, 2015. A four stroke has valves and will have an oil reservoir inside the engine with a dipstick to check level. While running my pontoon yesterday I encountered a loss of power problem. Re: 1980 Mercury 40hp turn over-no start problem. Open the vent screw and ensure the engine is on a level surface. jc sparks New 40-60 FourStroke Engine Maintenance - Changing Fuel Filter. Do not use the choke, open the throttle all the way and try starting again — it will usually take at least 2 to 3 pulls. May 20, 2008. Of the other low-emission 40hp outboards, only the Yamaha F40F and Tohatsu DFI TLDI 40 outboards are lighter. When the engine experiences power loss, it may not be able to function at its optimal level, which can be Oct 1, 2008 · The 40 will do for your size boat, don't get me wrong there; it's just that it's probably towards the lower end of the power rating for your hull. Once the outboard reed valve gets damaged or fails to function, it affects the engine performance or outboard motor. As for the fuel pump I had a similar problem with a 70 horse and a fuel pump rebuild ($11 kit about 15 mins to install) made the thing run like new again. Squeeze the fuel primer bulb continuously until fuel flows out of the vent without any air bubbles. 2+2 Carburetor problems. Increased the RPMs to about 2000 with normal response. May 27, 2012 · Re: Root cause of Mercury 2-strokes' rough idle. 4. #16. 3. Dec 3, 2019 · Lists the 40hp Mercury recommended WOT ranges. If it doesn't drift down from tilt then your check valves are passing Sep 9, 2020 · 1. Move this wire around from the opening by taping it to another part or wedging it between components. May 10, 2009 · Messages. or spark plug fouling. Aug 4, 2023 · Replace the spark plug if necessary. Turn off the main electrical cutoff switch. Sometimes, after flooding, it will start and then die. 5 HP to 60 HP. 40hp 2004-2005 1. 3 Checking And Replacing The Fuel Filter. You did not say how you checked for spark, but there is a right way and a wrong way to check for spark. May 4, 2009. - Fuel filter. I took the boat to the local marine shop and had spark plugs, lower end oil and the water pump & seal replaced. Aug 18, 2013. The 4-stroke outboard engines, in particular, provide boaters with dependable power, smooth operation, and excellent fuel efficiency. -when running the starter, you can feel the air pressure in the fuel pump air lines, and the Disconnect the fuel line from the engine side of the bulb. As I'm not all that familiar with marine charging systems I thought I'd leave it up to you folks to diagnose. Ok gotta forgive me I spent all day yesterday replacing my crankshaft and rebuilding the engine for the test ride today all when pretty good. The iffy tach was the standard harbinger of bad times coming for the regulator. I've had experience with one outboard motor before, which was a regular 2 stroke 40 hp Merc (premix). Contents hide. Water can be removed from the filter. 1 / 1. To correct this, empty the fuel tank of all oil. Oct 30, 2019 · Down the coast for a few days checking boat and giving engine a quick once over ready for winter Aug 27, 2020 · 3) Spray in some carb cleaner into the air intake of the carb with the air filter (it it has one) off. It will also indicate the wire colors and connections for each component, making it easier to troubleshoot and repair any electrical Nov 19, 2023 · The reason. If you have a strong spark when the motor Aug 3, 2023 · Problem 1: Engine Acts as It Runs Out of Gas. Aug 25, 2007. Re: 2000 90 hp 2 stroke won't start. RPM's drop from 5200 to 3000 and then pick up again. Cooling System Problem. If they check out ok and your getting power to the pump, its a bad pump motor. Sep 6, 2001. Check your fuel line for an obstruction and the primer bulb for fuel flow. A crack on that unit is also a sign of a bad coil. #4. Many things can affect idle quality. I was running at full throttle and suddenly had a loss of power, it slowly picked up speed and ran normal for a couple of minutes and then started to lose power again. talking about a 1997, inline-4 cylinder, 2-stroke mercury here. I know what your problem is, a four inch hose ( (a 20$ part ) inside the fuel pump failed, and is filling up your crank case oil. Some times on an old hose the inner lining breaks down and collapses when the suction of the fuel pump gets higher with increased speed. 1. May 31, 2008. It is essential to check the alternator, wiring, and voltage regulator to ensure they are functioning correctly. Refer to Maintenance – Fuel System for filter removal. Let go of the primer bulb. It sounds like it is occassional hitting on one cylinder. 83 gear ratio 5000-5500 rpm. Rugged durability. A way usually to confirm a faulty fuel pump is to pump the bulb, if it runs fine as long as the bulb is kept tight, that is a good indication of a faulty pump. You shut it off. 5 Problem #5: Stalling. The engine runs great above idle. Jul 7, 2008 · Jul 7, 2008. Hello all. 4 Engine Power And Acceleration Problems. Start with the cheapest and easiest and work from there. May 20, 2008 · Messages. Jun 25, 2020 · Motor will start and then stalls out so it looses its prime. May 19, 2021 · When you say it revs high, for how long before you shut it down? It almost sounds like you pump the float bowl full, the engine runs the fuel level down, the engine leans out and the rpm increases. here is what I have done with all my merc engines, I take the "pee" fitting off the crowling and drill the hole out enough so the hose that went to the "pee" fitting sticks out of the crowling, since I've been doing this I've never had anything clog up the small "pee" fitting. First off that is a 2 cycle engine requiring oil to be mixed with the fuel. Runs fine. posted 02-27-2003 08:35 AM ET (US) I have owned several of each engine and for the 13 hull would opt for the 2 cyl version because of its lighter weight and simplicity (one carb vs. 272. 12. could be an actual overheat, could be a bad overheat switch and it could still be a failed alarm module. Aug 19, 2023. Take the spark plug wire boot off the plug tip. I am not a marine engine mechanic but this is a fix that Aug 26, 2007 · Joined. first you have to recreate the alarm condition Tip for diagnosis: let the engine idle rough for a while. I have a 2000 Mercury 40 HP 2 stroke (says Tracker on the cover) on a 18ft suntracker pb. It’s had the oil injection system removed so I mix the gas/oil 50:1. TC-W3 min. The specifications plate (usually on the transom) should give you allowable load and max power (unless it's a fairly old hull, in which case the info may not be there. Starter Motor: In case the starter motor is at fault, you might have to consider a replacement. Remove the snaps on the outboard motor upper case and take off the cowl cover. As the thermostat heats up, it should open. Possible Causes: Clogged fuel filter, faulty spark plugs, water in the fuel system, dirty carburetor, ignition problems. When the problem is happening, the motor will run smoothly at idle and at low throttle while in forward gear. Then, stick your finger on the hose barb. Thread starter jc sparks; Start date Jun 26, 2015; J. to/3fb8dfnYou can also donate directly to my PayPal:https:/ May 17, 2016 · First, new plugs, second, new impeller, third clean tank and flush through carburettor with carb cleaner, forth, replace gear oil, fifth, spray all electrical components and wires with electrical cleaner and preservative -- WD40 or the like. I recently bought my 1st boat. So if those are correct for your engine then likely there's nothing wrong with it & you're about there unless you want to try different prop pitches to increase your current max rpm. I was hoping the problem was the fuse in the holder attached to the motor but it wasn't. If all is normal, 2-stroke idle is acceptable. Re: Mercury 40HP 4 CYL Cooling Issues? If it is the same as my 93 40 hp, a stream of water should come from a small hole just to the right of the motor cover release as you look toward the front of the boat. Probably too many to mention. 2 Preventative Maintenance Tips. However, there would be comparatively lower sound with this if the fuel pump is faulty. hello<br /> a steady tone indicates an overheat. New member. 3 Professional Troubleshooting And Repair. 1,055. So many people buy the cheapest oil thinking they're saving money. The Boat itself is a 1993, so I'm not sure if the motor is the same year. Among all the things that can cause a coolant leak in your Mercury 50-hp 4-stroke engine, the most common reason is a faulty gasket or O-ring. I also had this problem on a 90hp 2 cycle. Cheap oil doesn't protect the engine as well, the engine doesn't perform as well so they use more fuel. This morning the boat started up normally Jun 20, 2022 · Jun 20, 2022. In other outboards, coils are inside a unit without oil. Find a Dealer. Re: Mercury 2007 90HP 4-Stroke EFI Fuel Problem. Step 2: Turn off the engine Aug 18, 2013 · 43. 0 gear ratio 4500-5500 rpm. ) Using the powerhead from a Yamaha F40F outboard, the Mercury EFI 40 four-stroke outboard motor is lighter than some DFI two-stroke engines in its power range. Aug 4, 2007. 2 ounces of the correct oil and for 50:1 Step 1: Remove the thermostat from the motor. Apr 9, 2015 · I have a 1991 Mercury 40hp, 2 stroke, 4 cylinder that is oil injected. The wiring diagram for the Mercury 40 HP 2 Stroke is a complex diagram that shows the wiring connections for the ignition system, the charging system, the starter system, and various other electrical components. During driving or accelerating, the motor will start acting like dying but gradually builds up acceleration. Jun 4, 2023 · This is an issue that can affect Mercury 90 HP 4 stroke engines if the fuel system is not properly maintained. I just bought a 1998 Mercury 40 hp outboard (serial # 0G660803, model 40M?). Locate the air vent screw on the fuel injection system. There is no chance of any leakages. Blockage or restriction in cooling passages, often caused by debris or scaling, can also impede the cooling system’s efficiency. If there is no spark, then you need to do some troubleshooting with a multi-meter and DVA meter to figure out why no spark. A 2004 Sun Tracker 21’ Party Barge. It happens as a failing outboard reed cannot respond to the increased fuel flow. 5 to 50hp, there are solutions for powering a wide range of boats and applications. #5. (looking at the back of the motor, the left bank is numbered top to bottom 1-3-5, the right bank is numbered 2-4-6. Put new plugs and seems to run great most of the time. Aug 4, 2010 · Aug 4, 2010. This year my uncle passed away and left me his bass boat, a 2003 Bass Tracker 175PT with a 40hp 2-stroke Mercury, model 1041412AN, serial 0T639148, manufactured in 2002. It cranks over but no signs of starting and idling? Answer - I would be happy to help you with that. Mar 28, 2023 · Symptom 1: Leakage of Oil or Cracks on the Body. This can be caused by a variety of factors, such as a clogged fuel filter, a dirty air filter, or a faulty spark plug. See if the engine is making the noise and coming from the air silencer in front of the carbs. Apr 12, 2023 · In this article, we will discuss the common problems associated with Mercury 40 hp 4-stroke engines, their causes, and solutions. Aug 1, 2022. 40-60 FourStroke Engine Maintenance - Changing Fuel Filter 40-60 FourStroke Engine Maintenance - Changing Gear Lube Aug 1, 2022 · 3. Clark Roberts. It is advisable to consult a professional in such cases. Jul 5, 2008 · Jun 23, 2010. May 26, 2015 · K. If your Mercury 20 HP 4-stroke engine is running poorly or not producing as much power as it used to, it could be due to a number of factors. Overheating is a common problem faced by users of the Mercury 40 HP 4-Stroke. In the case of a mercury 60 hp 4 stroke engine not charging the battery, the reasons can be similar to the ones mentioned above. Smooth performance. 4) If the engine increases revs then the idle jet is blocked as it is getting some 'fuel' ie the carb cleaner. Oct 5, 2009 · Messages. If you find any oil on that unit’s body, it means it surely has a crack on it. C. Re: 90 HP 4 Stroke - intermittent start problems. Its running a 2003 40hp Merc 2 stroke - I immediately had the carbs cleaned out after buying because it wouldnt stay idle without stalling. Overheating Issues. In this case, remove the air filter and clean or replace Feb 27, 2024 · Hi, I have a 40 hp 2 stroke Suzuki, the last time it was on the water it ran good, full power, for about 2 hours, then it started making this chirping sound almost like a backfire or something. One of the most common problems with the Mercury 90HP 4-stroke outboard motor is overheating. A 2 stroke will have an oil tank which will inject oil into the fuel. 40hp 2001-2002 2. The method to reset the alarm may differ depending on the specific alarm type. Aug 25, 2010 · Petty Officer 1st Class. Mercury/Mariner 2. 3 Problem #3: Rough idle. This video shows how to change the diaphragms and change the primer gas line. Jiggling is not a diagnostic tool (at least not a very good one). - Fuel pump rebuild. In a clean can containing a gallon of gas, pour in the correct amount of oil. Re: Mercury tilt/trim 50 HP 2 Stroke Problem. Apr 14, 2010 · Mar 30, 2006. I know Merc made a 50hp 2-stroke 4 cylinder back in 1977 because I bought a 1977 40hp 2-stroke but it was a 3 cylinder. #1. Jun 26, 2015 · Mercury Mariner Outboard Forum . Apr 13, 2010. The 3 cyl version is a killer 40hp being same engine as the 60hp and would be a bit much for the 13 with its 59 cubic inches! Four Beeps every 2 Minutes. The primer bulb never really "gets hard" because the fuel pump is sucking (rather than pushing) fuel through the bulb so there is no pressure being built up in the bulb. However, it still develops plenty of torque. For 40:1, add 3. The old clear potted one you burned up is known to be weak. Sep 10, 2020 · Get your Mercury 40 2-stroke water pump repair kit here: https://www. My fishing buddies' 40 hp Merc appears to have a charging issue. May 19, 2004. Runs fine most of the time, but sometimes will not restart after shutting down after 30 minutes or so It cranks and seems like it is getting gas . for me it would be on a small utility/fishing boat, [a 13 foot whaler]. The engine started at first touch and was running very smooth. Jun 5, 2010. Enjoy classic TwoStroke speed, power and performance thanks to high-displacement powerheads and exceptionally lightweight designs. Jul 1, 2023 · Here are some common problems and their respective solutions: Trim Motor Failure: Replace the faulty trim motor with a new one that matches the specifications of your Mercury outboard motor. 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. May 19, 2004 · Messages. I have checkd the Aug 13, 2023 · Overheating is a common issue with the Mercury 90HP 2-stroke motor, which can cause severe engine damage if not addressed promptly. Then advanced throttle to come on plane and engine shut Oct 14, 2003 · Re: Mercury 40hp '92/93 2 Stroke - Alarm beeping Hi, I just wanted to add to this thread since the OP has it alive. Re: Mercury Outboard no pee hole discharge. 28 posts · Joined 2008. When you remove it from the boiling water, allow it to cool and it should close again. For instance, a dirty air filter could be restricting airflow to the engine, which can lead to decreased performance. 2 Problem #2: Overheating. try squeezing the primer bulb on the fuel line and see if it will stay running, if it does then get a fuel pump kit and rebuild the fuel pump, take carb apart and clean thoroughly. Yamaha outboard not charging battery Jul 8, 2019 · So right now here are the symptons/issues I have indentified: -after priming the bulb and getting fuel into the carbs, it will start up and run fine for just about 3 minutes everytime before all the fuel in the line is emptied and the outboard stalls. 2. Feb 5, 2007. It’s everything you need to get more out of your time on the water. Aug 4, 2010. Water pump failures can hinder proper water circulation, leading to overheating. Step 1: Identify the type of alarm. Jun 2, 2023 · Mercury outboard engines are renowned for their reliability, durability, and performance. The new one is better. While trying to get the regulator off I noticed two wire connectors that I believe come from the stator that . Jul 13, 2004. 4 Problem #4: Loss of power. I'm working on a friends pontoon that has a 40 hp Mercury that isn't charging. Apr 1, 2010 · Apr 6, 2010. If he ran it out of gas it's possible he sucked some deris from the bottonm of the tank into the system a good carb cleaning might be in order. Aug 10, 2023 · Ranny1019. Aug 15, 2023 · Here are the steps to follow to reset the mercury outboard alarm. For example, if you require a 32:1 ratio, each gallon of gas requires 4 ounces of the right oil for the motor mixed in. Sometimes near as good as a 4-stroke. 3,319. Let it sit for a couple hours then it will do the same thing. Squeeze the bulb, fill the bowl, and start over again. 98. 4 Inspecting And Replacing The Water Pump Impeller. Start by making sure the battery cable ends are clean and tight. Misfire Problem. Jun 30, 2008. I have a Bass Tracker 40hp outboard Oil Injected 2 stroke outboard. <br /> its now time for some careful troobleshooting. The fuel line actually started separating from the inside out creating a blockage when the engine sucked fuel in. Your alarm isn,t going off until you reach 4200 RPM meaning the sensor seems to be OK. It has been this way since I purchased it new. - All fuel hoses and clamps. Features. Left the ramp and idled out to the main channel, about 7 to 8 minutes. Joined. Re: Mercury 40 HP 4 stroke alarm. Engine looks remarkably clean, but bogs down to the point of dying when I go from idle to full throttle. 3 etc). Lightweight Heavyweights. Oct 1, 2023 · the common problems with Mercury 115 2 Stroke include, Not Running on 4 Cylinder. The frame mounting screw wasn't. The serial and model numbers are below. The coils of some mercury outboards are sealed inside a unit with oil. Re: Primer Bulb won't stay hard. 60. Jan 31, 2005 · Feb 1, 2005. Dec 1, 2018 · You can support the channel by using the Amazon Affiliate link when making purchases:https://amzn. ksuhof Discussion starter. A solenoid click says voltage is getting to the starter solenoid but not enough voltage is the problem. While running the voltage on the guage shows around 12 volts and drops off the longer the boat runs. i want to ask if these are good or reliable motors and i asked about it on Sep 3, 2023 · Mercury 60 hp 4 stroke not charging battery. Jet 25-40hp. 1994, 40 HP, 2 stroke problem. Mercury outboard motors have various alarm types, such as overheating, low oil, low battery voltage, oil pressure, etc. A fuel pump failure can result in insufficient fuel supply, which can cause the engine to lose power or not start at all. Messages. One of the most frustrating problems with the Mercury 50 HP 2-stroke is when the engine behaves as if it’s running out of gas, even though the fuel tank is adequately filled. #3. Power Play Issues: Problem: Engine stalls, loses power, struggles to start. will idle fine, run in the driveway ok. Rough idle is a subjective statement. Sent from my iPad using Cruisers Sailing Forum. Hydraulic System Issues: Ensure the hydraulic fluid level is correct and refill if necessary. Thanks-just curious and perhaps c Jun 10, 2023 · 1. This comprehensive blog post Aug 7, 2011 · I have a 40 hp mercury, 2 stroke, 4 cyl- 1990's. It has a 2004 Mercury 60hp Bigfoot 2-stroke. Apr 14, 2019 · Here is a seldom talked about solution to an outboard engine that is hard to start and idles poorly. Grounding a plug or plug wire to the block Oct 15, 2015 · Boat: Island Packet 38. I have seen an ad for a 1995 Mercury 40hp 2-stroke 4 cylinder. Went to go out on Monday after a bad day at work and it would not start. Impressive torque. Ran great. Spraying into the intake means you removed the cowl The wiring diagram for a Mercury 40 HP 2 stroke outboard motor typically includes information on the ignition system, starting system, charging system, instrumentation, and various other electrical components. I've been out 6-7 times, and have ran about 24 gallons of fuel though it, most of it 1. Another common problem that occurs with the Mercury 50 hp 4 stroke engine is power loss. Aug 25, 2010. I have replaced the plugs and adjusted the idle. In this article, I’ve explained all these Mercury 115 2 stroke Problems with proper solutions. Jun 17, 2008 · 7,474. The engine idle is 1000 RPM. From what you have described, it looks like the problem you have may that of a defective diaphragm pump which may be leaking fuel to the engine and flooding the stark plugs. Mercury Jet outboards are built capable enough to handle your endless drive for outdoor adventure. 5) If the engines get slower the carb cleaner is flooding the engine so the idle jet is not blocked. With the arrow pointing to the side where you pulled the hose off. Oct 5, 2009. Barry, May 19, 2021. Step 2: Put the thermostat in a bowl and immerse it in boiling water. They have no valves and typically smoke when you start them. 1 Problem #1: Starting problems. Aug 11, 2011 · Aug 11, 2011. 20. I have a 2006 40 HP Mercury 4 stroke EFI engine that will not start. these are good motors but buy as new as possible about 92 and back merc had a problem with the spacing around the crank berings it wasnt big enough and the berings where buring up witch means power head blows keep newer than that and you will get one fine dependible motor. Continuous. Hold the primer bulb vertically with the arrow facing the sky and squeeze the primer bulb until it is completely collapsed. i know, i know, not a real "racy" motor, unless it's for one of those tiny little hydros, i suppose. wo za yt yd dm lp vj yw nc fk