Mercury 150 Efi Hard To Start

Start the engine, and do a full-throttle run down the straight, through all gears. It happens once it gets warm, after a while it won't start at all. My 2003 2 stroke 150 merc runs fine at 1/2 throttle but dies out at full throttle after about 3 mins. For use with Mercruiser Injector 805225A1 on various GM V-8 350, 377, 454, 502 MPI applications. Its had a new set of plugs a new fuel pressure regulato and the map sensor was replaced but nothing has helped. DOWNLOAD MerCruiser Repair Manual & Won’t Start Troubleshooting Guide DOWNLOAD a complete MerCruiser repair manual in seconds. Mercury MerCruiser MCM 4. But it wasn’t always that way. Powerboating discussion forum focused on performance boats, bass boats, outboard engines, boating events, boat racing, and latest marine news Search Results - Scream And Fly Powerboat and High Performance Powerboating Discussion Forums. P0171 FORD Tech Notes If the P0171 is combined with the P0174 code, it's very likely that the problem is caused by an intake leak. Mercury 150 efi cranks but wont start - Cars & Trucks. 6L motors, uses a traditional in-tank pump just like the returnless style. Use with engines that produce 550-600 hp and that use an additional 100-150 hp dry nitrous oxide. So you know your battery is good and the starter works OK because the engine turns when you try to start it. She'd call for help, and by the time I'd get there the engine would start right up and run fine. Once on plane and with the remote at between full and 3/4 throttle it has intermittent missing then will clear itself up and run normal with no missing, with normal idle. Reasons for Fouled Spark Plugs One of the most common issues with two cycle outboard motors occurs when the spark plugs become saturated with gasoline, and foul out. Shop Mercury Outboard Tune Up Kit at Wholesale Marine. This sends fuel into the engine so it will take a spark. planbmarine. I was out fishing and she died on me when trolling at idle, then just would not start at all--luckily my Trophy has twin motor. I bought a 1990 Mercury 25 hp outboard motor and started it for the first time today. It has always been cold natured and hard to start. It is also required to produce the all-important spray pattern from the injector. The Mercury 50 hp outboard is capable of producing 5,500 to 6,000 rpm. The amperage on the depth finder shows that it is dropping to 10. Spark at all 6 plugs. Looking for tips. 2 months later it quit while traveling down the road. No more missed boating trips due to a dead battery. The 15 HP Mercury outboard motor is available with 15 inch, 20 inch or 25 inch shafts and choose between electric or manual start. After that, good luck trying to start it. Disconnecting the. Mercury Mariner Rough Idle Repair Symptoms Ignition Coil Replacement A failing ignition coil can create several symptoms: Check engine light comes on Engine runs poorly or stall Increased emissions Reduced fuel economy Car won't start I. That's why we're committed to providing parts that are accessible, highest quality, and worthy of our name. As the outboard "ages", the cylinders become out of round from wear and this allows pressure leakage around the ring gap. 5 Horsepower Mercury Outboard Motor -. It will turn over a few times before it actually starts. planbmarine. Grouped by horsepower. Mercury 150 hp carb cold hard starting. * Mercury does not recommend flooded batteries on Verado motors. You crank and crank and crank but it just won't run. then i started listening for the fuel pump to kick on when i turned the key on. All tiller operated outboards equipped electric start (30hp and below) also have the standard manual thru-cowling pull cord. Then with the motor trimmed down, I move the idle lever forward and push in the key a few times to choke the engine. Mercury outboards are one of the most popular outboards on the water. Once I get it running it would run fine for about 30 seconds and start to die out again. It doesn't matter what temperature the engine is or how long between starts but if I rev up the engine while cranking it starts okay. however, lately, after a few hours of fishing. Subscribe to our free e-newsletter, and get new tips every two weeks. Ed's Marine Superstore is a Marine dealership in Ashland, Virginia, featuring new and used boats for sale, apparel, and accessories near Richmond, Elmont, Doswell, and Poindexters. It is running on the old vacuum system whereby you pump the bulb and then the vacuum created by the engine pulls the gas from the tanks. I had a pair of 1989 two stroke Yamaha 150's for many years. I would look for a loose connection before I started thinking. When you do, make sure that you use an OEM fuel filter. Is the problem present at this time? Let's say the misfire is present but no under hood damage can be seen. If the tank is almost empty it will have more volume to vent even if it has no more pressure, that is normal. Tests and Tips to find out why your Ford doesn't start. There is good fuel psi, just changed the fuel pump relay. Newer EFI/DFI engines don't have primers. And once you've paid a tech to drop the gearcase and. Outboards start like a car; just tilt ‘em down and turn the key. 1992-1998 135/150 HP Mercury/Mariner Service Manual. 6L SaltWater Series II EFI OX66/150 hp, V6 (2596cc), 2-stroke 2002 , 2003 Yamaha Outboard 150 2. But it wasn’t always that way. If you're buying a new propeller for your boat, you may simply need a replacement for a prop you damaged, you may be trying to address a performance issue (e. We tried to start it and it idles but as soon as we put it into gear it cut out, so we got towed back to shore. I have a tough one , my 06 f250 superduty with a gas 5. then i started listening for the fuel pump to kick on when i turned the key on. 2004-2005 Mercury Verado 200 225 250 275 Repair Manual; 2005-2011 Mercury 2. The Mercury 50 hp outboard is capable of producing 5,500 to 6,000 rpm. They provide voltage to your switchbox or CDM's. The water pump impeller of any outboard motor needs to be serviced on a regular basis, a task that if overlooked can lead to big trouble. New Models Crown Leisure Marine D'Iberville, MS 1-800-972-2277. 5 2-stroke mysteriously won't start. This can make it either difficult or impossible to start, depending on the severity of the situation. You do not have to remove the cowling or do anything special. 912-9708 Marine Terminal Kit Contains 100+ pieces of hard to find terminals and heat shrink. 4) Remove grounding of the diagnostic (ALDL) connector and start the engine. Includes Jet Drives. go and look for cracks in the bulb or around the hose, sounds like it could be sucking some air i am not an outboard mechanic or anything but i have had my share of fuel line problems. Download a 200HP Yamaha, Suzuki, Evinrude, Mariner, Johnson, Mercury outboard repair manual in seconds. Needham's Marine Limited Hard to find midsize cuddy cabin cruiser powered by a 5. A vacuum leak on a fuel injected engine will cause high idle. It will need new glow plugs and then it should be fire up fine. I can't get the car to start unless I hammer on the gas pedal. Boats and planes are unique in that any sort of fuel leak is usually retained inside the vehicle, or the hull in the case of boats. Use an accurate digital vacuum gauge that reads in either in. Its had a new set of plugs a new fuel pressure regulato and the map sensor was replaced but nothing has helped. Use with engines that produce 550-600 hp and that use an additional 100-150 hp dry nitrous oxide. 5L XRi EFI (200 hp - 1992 model) that does not have an electric fuel pump. It will be very hard to remove it if you do. System Too Lean (Bank 2) What does that mean? This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. My mercury 150 efi is hard to start when cold now it wont start at all it acts like it is getting too much fue My 150 mercury starts hard cold or hot. Fuel pressure sensors(FPS) What is a FPS? What does it do? Your common rail Diesel Engines is fitted with a fuel pressure sensor. So the article below will explain about the MAP sensor function, working principle and the symptoms you can look out for if it were to go bad. The boat runs terrific and I was going through my regular maintenance and found something a bit strange. Over 40,000 auto repair manuals and history books. 2020 Mercury FourStroke 15 HP EFI - 25 in. The compressors sometimes fail at 7 or 800 hrs if fun in dusty silty conditions. 6 liter V8 is almost extinct. gine to warm up after cold engine starting. They charge your vessel's battery(s). sounds like your fuel pump is just going bad. I will start at the beginning. These outboards impress us every time we remanufacture them. if i heard it the car started if i didnt it wouldnt start. To be eligible, the major assembly must come with a one year Parts and Accessories Limited Warranty and be installed by an Authorized Mercury Dealer. once you drive it for twenty, thirty minutes, it will not start. Fuel-injected engines are especially susceptible to problems with both fuel volume and fuel pressure. ** To add a photo(s) to your listing, e-mail me a. loss of power troubleshooting: bogging down [109,077 views] We've launched an improved GY6 Technical Center for 2014! We're in the process of bringing all of these old articles to the new system. 1982 Chevy 6. But wont start now. The rest of the day it ran fine. Mustangs Gallop with Insanely-tuned F-150 at the Drag Strip Does a 2018 F-150 SuperCrew with a tune and a tank full of E85 fuel have the power to dust a Stang and break into the 12s? Comments | By Derek Shiekhi - October 16, 2019. Spark at all 6 plugs. I was at the point of thinking of selling it and getting a fuel injected engine simply because I was frustrated every time I had to start the engine cold. At the time Evinrude and Mercury were the only major manufacturers of two stroke engines. fished a long night running all accessories. I would look for a loose connection before I started thinking. "I have a 1998 Mariner V6 Oil injected with very few hours which will not run over about 2000 rpm under load. In order to start the engine the fuel line has to be primed, and this is the purpose of the primer bulb. jpg Vehicle Certification (VC) Sticker (typically on the rear edge of the driver's door of 4-door models, or the rear of the driver's door opening below the beltline of 2-door models) IF THE IMAGE IS TOO SMALL, click it. Computers Starting at $99! DODGE / CHRYSLER / JEEP / FORD / MERCURY / GMC / GM / CHEVROLET / PONTIAC /OLDSMOBILE AUTO COMPUTER PERFORMANCE is comprised of a background of ASE Certified Master Technician, Auto Electronics Engineer, Computer Scientist & quite possibly the most knowlegable and friendly staff. Mercury outboard won't start after warmed up (self. All tiller operated outboards equipped electric start (30hp and below) also have the standard manual thru-cowling pull cord. Mercury Outboard Motors FourStrokes 2020 FourStroke 150 HP - 25 in. Engine turns over just fine, and there's 2 beeps to the - Light Outboard Motor Boat Bass question. He said no problem. At the dealership and awaiting your inspection. This resulted in each outboard being stuck in forward. High fuel pressure results in a rich air fuel ratio, because the increase in pressure forces more fuel through the injectors than required. fresh out of the box. USUAL CAUSE The usual cause of abnormally high idle speeds are vacuum leaks or an inoperative idle speed control motor. Stopped US sales in around 2004. being under or over propped) or you may simply want to gain better fuel economy. Technician's Handbook (Service Manual)3. As I was starting to pull it out I started poking around in the engine just making sure everything was looking ok, and beats me why I just decided to clean the EGR ports since I had read about someones being clogged. In some models of car, the intake manifold has a double use as a conduit for coolant fluid. engine service manual 25hp mercury tracker outboard service manual 1992 25hp manual 1997 25hp johnson outboard motor wiring 25hp yamaha outboard outboard service manual 150 v6 efi mercury outboard service manual 125 hp. Starting at $15,878 * or $142. Add Sta-bil in the fall. "I have a 1998 Mariner V6 Oil injected with very few hours which will not run over about 2000 rpm under load. Find out why Close. I've got a miss and hessitation when accelerating. A squirt of fuel directly into the air intake can help; if the engine fires on that small shot of fuel but won't start without it, the fuel system's the problem. re: Mercury 150 XR6 issues Posted by dltigers3 on 8/24/14 at 12:59 pm to DownshiftAndFloorIt The carbs were just cleaned in may. This resulted in each outboard being stuck in forward. Then, when it does start, I have to keep giving it gas for a couple minutes because if I just let it idle the engine dies. Q: I have a 1994 Ford F150 XL 4x4 with a EFI 5. SYMPTOM SUMMARY The engine idles too high. Push the choke control inward. It takes at least 3 tries before it will start. i have a similar problem, (150 Merc) the engine will start fine when cold but after a long run the starter will just spin but not engage the flywheel. Mercury 150 efi cranks but wont start - Cars & Trucks. It will smoke white for a while but that will not hurt anything. Starting Model Year 2000 & Starting Serial Number OG960500 & above. Poor compression in an outboard results from cylinder pressure leakage usually around the cylinder rings. It will not idle up when you start it and starts to smoke heavy till it gets to the point where it will just about stall if I don't give it some fuel. it' fuel injected. however, lately, after a few hours of fishing. It would run fine until it got hot. Starting Model Year 2000 & Starting Serial Number OG960500 & above. 5 volts when cranking the motor. Started to head out in to the bay and bam, the boat lost all power and slowed to a troll. When it’s Time to Tune Up Your Mercruiser Ignition System. And once you've paid a tech to drop the gearcase and. What To Do If Your Outboard Won't Start. 3) With the ignition still on, disconnect the IAC electrical connector. once you drive it for twenty, thirty minutes, it will not start. Poor Gas Mileage. Merc 150 EFI start/run issues James Keen. Removed the plugs. Slowly start to pull back on the throttle until it feels that the engine is starting to make power, runs smooth or to the point where it starts to loose rpm. It was put on diagnostic computer. Great for aluminum fishing boats, inflatables, sailboats, or as a kicker, the 15hp and 20hp engines are reliable compact outboard motors. 0L and early 4. Mercury Outboard Gearbox Problem I have a 60hp Mercury/Mariner outboard on a boat where the throttle/gear lever was too stiff to engage forward after a bit of rummaging I dropped the lower leg and found the gear select inside the leg was fine for reverse but stiff for forward. See a good spark when I pull. For flushing without muffs, Mercury offers a garden-hose adapter that connects to a port in the lower engine cowl; this port is accessed by removing a dust cover. 17/month** MERCURY 50ELPT EFI FOURSTROKE. 2019 Mercury Fourstroke 150 hp 150 HP. 0 efi trying to find out what to do i was driving on the. They provide voltage to your switchbox or CDM's. Comes with two humminbird fish finders, 898 sigps at console and 797 sonargps on bow. 90-10184020 FEBRUARY 2001 Printed in U. Checked the wiring: all good. it' fuel injected. Read More » Where can I find the electrical schematic or wiring diagram for my engine?. My 115 mercury is still hard to start in plus 4 - 6 degree Celsius temperatures. Mercury Outboard 150 HP EFI 300 Hour Maintenance Kit 8M0094233 JavaScript seems to be disabled in your browser. Injector size is 42 lb. I have never tried to compare gas milage with other similiar engines, but as I am sure you already know they like gas. If you cycle the power quickly, it'll get confused and go into alarm mode. They’re also lighter, easier to work on, and downright angrier, pumping out a lot more power per cubic centimeter of displacement. i have a 2015 focus and i drove it without the hood on or the cover for under neath the motor and trans. Things were looking up: I replaced the spark plug, cleaned out the exhaust, adjusted the idle / fuel screws, and even replaced the brakes (I can stop now!). It's a Mercury Optimax 125hp, just had its 2 year/200hr service last December, just clocked up 200 hours on Saturday and has been a star performer from day one. Re: Mercury 150 hp carb cold hard starting Hey, I've got a 2001 Mercury 150 hp carb that I bought new. the problem stop for a while. The harmonic balancer or damper is usually a tight press-fit onto the end, or "snout" of the crankshaft. These thicker walls prevent the cylinders from going out of round as readily as other outboards. Check the oil level on four-stroke motors. It was put on diagnostic computer. Unfortunately your specific model doesn't come with a fuel pump diaphragm kit and you would have to look on the fuel pump section of your model's diagrams and piece out everything you need from the kit individually. - 2001, Mercury Marine Page 1 of 26 INSTALLATION MANUAL 25, 30, 40, 50 and 60 HP (4-Stroke) NOTICE TO INSTALLER: After completing assembly, these instructions should be. Been a great motor. SYMPTOM SUMMARY The engine idles too high. Step-by-step troubleshooting will help you pinpoint problems. To start and run, an outboard needs:. That's pretty normal. Battery was low enough I had to jump across from a trolling motor battery. The odometer reads 30,631 miles. Push the choke control inward. Now, there’s still plenty of carbureted two-strokes in service. It begins to sputter until I either ease off the throttle or it shits off. 0L and early 4. I do not know what year your outboard is or if this is a problem with Mercury outboards. Then, when it does start, I have to keep giving it gas for a couple minutes because if I just let it idle the engine dies. Tohatsu, Japan's oldest outboard manufacturer, has been producing high quality, durable outboard motors since 1956. Rubex RBX Hub System Cross Reference Charts. Tachometer output on 50 Hp Mercury four stroke The tach does use the charging system, picking up the unregulated AC input to the rectifier. Our Mercury Outboard Spark Plug Wires are at the lowest prices and same day shipping!. Shop Mercury Outboard Tune Up Kit at Wholesale Marine. Largest selection on the web. Engine fails to run and has no spark. NOTE: 1 GM EFI ignition system failure open or shorted, driver will flag EST 1 fault. problems. 4) Remove grounding of the diagnostic (ALDL) connector and start the engine. Re: Which is the best bass boat motor? « Reply #17 on: September 03, 2007, 02:16:18 PM » yamaha everything else is crap. It is possible for the starter solenoid to wear out over time. i have a 96 taurus 3. But blockages don’t cure themselves. Troubleshooting Ignition Problems on a Mercury Outboard By Cleveland Van Cecil ; Updated April 12, 2017 Mercury Marine is an international motor boat company based in Lake Forest, Illinois, providing motors for private, commercial and government craft. Condition is Used. If the engine won't start or backfires through the carburetor, install the distributor 180 degrees from where it is and you'll be in the ball park. Mercury/Mariner 135 150 150 XR6 150 Magnum III 150 EFI 175 175 EFI 200 200 EFI 150/200/225 Pro Max 150/200/225 Super Magnum The service manual download for the above listed Mercury Outboard models. Use with engines that produce 550-600 hp and that use an additional 100-150 hp dry nitrous oxide. Starting at $16,458 * or $147. This is when there are just enough parts of air (14. Skip trial 1 month free. If you are having starting issues, it is important to check the battery and its connections to make sure the starter is receiving enough voltage. This is motor is being a pain in the butt. Mercury EFI outboard problem. Elevated fuel pressure is required in an EFI system to provide the proper amount of fuel from the injector and to protect against percolation and vaporlock in the fuel rail. To start and run, an outboard needs:. Engine fails to run and has no spark. Use an accurate digital vacuum gauge that reads in either in. You would think that a brand new motor would start on the first or second pull. Starting at $16,458 * or $147. That is the only problem I have had with the engine. first of all it has a hard time starting even with a new, fully charged and recently tested battery. If the choke is sticking, it will have a hard time starting when HOT. All of our engines include a full one year warranty & free core return (where applicable). SYMPTOM SUMMARY The engine idles too high. Engine is hard to start especially after sitting from a run. This truck is in rough condition and is hard to start right now, but when it starts, it runs pretty good. If the pressure is too low, the engine does not start. Click here to enter the site. back,I had it in for adjustment fuel/oil mix,and they sold me,I want to believe,was an oil by Evinrude that was to smoke less at around $35/gal. I don't have a users manual for my 1990 75 horse Mercury motor, but my warning beeper starting beeping when I was out last. Removed the plugs. It is reproduced here on this blog, but I encourage you to go over to his blog site to read the whole story. Section 7 - Troubleshooting Diagnosing EFI Problems Your authorized Mercury MerCruiser dealer has the proper service tools for diagnosing problems on Electronic Fuel Injection (EFI) Systems. Install one of the Mercury 150 EFI 6-cylinder boat performance plugs to your 150 EFI 6-cylinder Boat and it is ready to go. 2 liter, 16-valve) engine always can start when cold. Mercury 150 FourStroke Outboard, Control System 2013 The Mercury 150-hp FourStroke outboard has the low-end torque of a two-stroke and the fuel-efficiency that made four-strokes popular. Mercury outboard won't start after warmed up (self. 6L SaltWater Series II EFI OX66/150 hp, V6 (2596cc), 2-stroke 2002 , 2003 Yamaha Outboard 150 2. i have a mercury grand marquis. Depressing the switch too hard may cause damage to the tachometer! Be sure the selector switch has locked into the detent at the correct position by slightly rotating the switch back and forth with the screwdriver. Checked the wiring: all good. thru 150 6 cyl. but other times the truck will start then just idle off. Been a great motor. Includes tandem trailer. Use an accurate digital vacuum gauge that reads in either in. the problem stop for a while. The Unit can be used to test points, preamp triggers, Mercury Outboard battery CD triggers, hall effect triggers, Alternator driven Ignition triggers, and can be used to check injection. 2017 Mercury 115 HP EFI 4 stroke MERCURY,,Mercury,115 HP EFI 4 stroke,115 HP EFI 4 stroke,Mercury 115 HP 4 stroke outboard motor. 95% Of the time it can be traced to dirty fuel injectors. I have a 1997 Mercury 150 EFI that will not start when it's cold. Engine is low on power. Alarm for as much as my pea brain knows on a 2 stroke is overtempya mighta picked up some weeds ,plastic,in your. The 2006 Ford F-150 has 900 problems & defects reported by F-150 owners. after a good run around the lake I will make a pit stop for about 15 to 25 minutes and the problem happens again. Removed the plugs. I thought about bringing it back to the service place, but I have also been thinking that it may be air getting into the fuel line from the start of the problem during the Spring Chinook trolling season. But wont start now. 912-9708 Marine Terminal Kit Contains 100+ pieces of hard to find terminals and heat shrink. thru 150 6 cyl. Call for Price. I have a 115 mercury. Mercury & Mariner Reeds Our goal is to help you obtain the correct parts on the first call. They can answer questions for any Mercury outboard motor model or horsepower including Chrysler Outboards, Force Outboards, Mariner Outboards, and Mercury Inboard/Sterndrives. I get in the truck, turn the key, and it tries to turn over for 3-4 seconds before it finally does, them it seems to be a hard start and the idle drops, then it goes up to normal idle. Mercury V8 and V6 Pro XS models transform every drop of fuel into performance to deliver excellent economy at cruising speed and wide-open throttle. go and look for cracks in the bulb or around the hose, sounds like it could be sucking some air i am not an outboard mechanic or anything but i have had my share of fuel line problems. ? My mercury motor starts hard once I get it started it runs strong but when I take off from a slow cruse it will start to bog down then If I push it a little more it will run strong again. Mercury Builds the Ultimate 150 FourStroke FOND DU LAC, Wis. Mercury 150 EFI Mercury's 150 EFI is a good compromise between carburetted and direct fuel injected motors, according to Andrew Norton When Mercury Marine's EFI range of outboards were released in Australia in the late '80s, they provided boaters with the convenience of turnkey starting, just like an EFI car. It keeps flooding out and the crankcase is full of gas. Shaft $14,635. Seloc Marine Repair Guides for Mercury Engines (Online and Printed Manuals) Mercury 150 Optimax Pro XS/150 hp, V6 (2507cc), 2-stroke Mercury 200 EFI XRi Black. it didnt matter if it was warm or cold. - 2001, Mercury Marine Page 1 of 26 INSTALLATION MANUAL 25, 30, 40, 50 and 60 HP (4-Stroke) NOTICE TO INSTALLER: After completing assembly, these instructions should be. Your browser does not support frames. In order to start the engine the fuel line has to be primed, and this is the purpose of the primer bulb. When I began to come off the throttle, the engine started to sputter and die at 3000 RPM. i have had it to different dealers in souther ontario canada but with no luck, they did however change the ign. Mercury outboards are one of the most popular outboards on the water. It runs great its just really slow to get on plane. so then i would just keep. All tiller operated outboards equipped electric start (30hp and below) also have the standard manual thru-cowling pull cord. Religiously maintained every 100 hours. By Bob you can start thinking gasoline. but other times the truck will start then just idle off. What could cause the code P0401. This is when there are just enough parts of air (14. so then i would just keep. MERCURY 90EXLPT EFI FOURSTROKE. DISCLAIMER. I had the same problemthis summer with my 89 f-150. Price is for motor. The next video is starting stop. In the cold weather try adding fresh fuel and a little fuel line antifreeze. When your Mercruiser is hard to start or will not start, Wholesale Marine offers these suggestions for troubleshooting your ignition system. It will turn over a few times before it actually starts. (this is only turning the key and trying once, it always starts the first time, but every once in a while there is a hard start like this). The temperature at which this occurs varies with the amount of vacuum and the volatility of the gasoline. Shaft Call for Price 2020 Mercury FourStroke 15 HP EFI ProKicker - 20 in. Mustangs Gallop with Insanely-tuned F-150 at the Drag Strip Does a 2018 F-150 SuperCrew with a tune and a tank full of E85 fuel have the power to dust a Stang and break into the 12s? Comments | By Derek Shiekhi - October 16, 2019. You can rev it and keep it going but as soon as you start to get down to 1000 rpm it wants to die. 5 HP, 6 HP, 9. When your Mercruiser is hard to start or will not start, Wholesale Marine offers these suggestions for troubleshooting your ignition system. I was wondering how much water should be coming out the pee hole at idle. We were discussing some things and I asked him about whether or not I'd need some modifications and he said he can attach the kicker motor to your 115 Mercury Outboard steering linkage so that you can steer the kicker from your captain's chair. Now, there’s still plenty of carbureted two-strokes in service. If there are no intake leaks, the next step is to replace the air filter and clean the air flow meter. Mercury Outboard four stroke 90 hp EFI Hard starting Mercury 15 HP EFI 4-stroke versus Mercury 15 HP 2. "I have a 1998 Mariner V6 Oil injected with very few hours which will not run over about 2000 rpm under load. The idle of a car engine is kind of like a human heartbeat: You can tell what shape it's in just by listening. can be picked up for somewhere the 9k range. then i could turn the key off and back on a couple of times and it would start. Mercury Outboard Motors FourStrokes 2020 FourStroke 75 HP - 20 in.