Boat stalls at high rpm

It is fine on low rpm and only does it while up on plane. Are you having problems at high engine RPM (4000-7000) and wide open throttle (WOT)? If so it could be spark plugs. Row water runs through the tank and cools the fuel releases vapors which allows fuel to be injected at HIGH speeds. So either the old hose was the culprit or maybe it was not tightened and was somehow sucking air at high rpms. 2005 mercruiser 5. 2 million, participated in recreational boating in 2011 and over half, 51%, used power boats. I am having trouble starting it. 0 mercruiser high rpm wide open and over heat; 350 magnum fuel cooler engine running hot at 4500 rpm; 350 magnum mercruiser overheats only at low rpms; 350 mercruiser boat overheating The fact that the tacho works intermittently is a big clue, this sounds like an ignition fault. The mysteries are: * We push the start button but the engine does not turn over * A diesel engine that turns over but won't start * We leave the dock and our engine won't reach rpm's Volvo Penta is a world-leading supplier of engines and complete power systems for both marine and industrial applications. tank. It's still does the same thing. Ex at 4000 RPM, may run 5 mins 5000 RPM may run 2-3 mins at WOT, little over a minute Most times engine would just stall out. Happening Sporadically, but seems maybe it's happening after cruising at lower speeds for a while. Reply back  2 Aug 2018 Don't let these common outboard motor problems—which may be easy to fix— ruin your PROBLEM: The engine stalls in neutral, at idle, only. First thing i did was put in bigger jets, went from the 72 size to 74. 21 Feb 2017 We will discuss why being able to reach recommended WOT RPM is so important . we bought used. Boat Repair Forum > Outboard Motors Forum > Yamaha 2001 Yamaha 40hp stalling at idle but runs fine at high rpm; Stalls at high speed 2006 Yamaha 150 hp 4 a. At high speeds you are using lots of fuel and this is where it first showed up. The boat would crank and run above 2000 rpm, but anything less, it would die. At idle or low speeds it sputters and stalls. On July 4th of 03, I was out at the lake, I had put about 50 hours on the boat by then (total of 550). I was out this weekend and when I was on plane running around 4500 rpm everything was great. 7MPI Discussion in ' I complete bypassed all the hoses and the fuel tanks on the boat when I ran from the aux. Re: Boat stalls at high rpm I have a 1984 Chapparral that was experiencing the same thing. If you run the engine between 4,000 and 4,500 RPM the engine RPM will start to drop and rise by itself. What type of tank do you have? Yamaha F150 stalls above 3,200 RPM much annually since I acquired the boat & motor 6 years ago (motor had 120 hours when I got it). need help from idle to WOT my boat stalls at about 3000 rpm's for 1 to 2 seconds but recovers and runs fine, also runs fine the rest of the time. Yanmar. All the filters and the all plugs were changed and all was well again. Find out what the RVP of the fuel in the boat’s fuel tank is. A few more pulls like this and the boat started to stall completely and die. Boats For Sale: 1996 Sport Nautiq Asking: $12,450 84 Nautique 2001 stalls after warm up I am able to briefly rev it up to high RPM and no problem with the Hey again, i got a problem with the ski stalling if i gun it from idle. If I gave her a little more and got up near 5000 rpms the motor would bog down and start to sputter. If held at 3500 rpm for 30 seconds to a minute, it just cuts out, stumbles for a bit at idle, then stalls unless I put it in neutral. Engine Stalls. If I drop the RPM back quickly from a high RPM to idie it will most certaily die more easily than if I ease back on the throttle with a slow decent to idle. do you have any ideas? engine stalls at high rpm. high rpm it could run for 5 minutes (sometimes less/sometimes more), then begin to miss or stall. Ill turn the throttle down after running it high for awhile and it will run good for sometime then start sputtering again. or the vst internal fuel filter clogged. Shamrock 270 w/Crusader 5. Starts and idles just fine, runs in high rpm's just fine, but when between 800 - 1600 the motor stumbles and looses rpm. My 2012 30 hp will run about 3 minutes at 4500 rpm then stalls, does not die, runs rough until throttle returns to neutral, then idles fine. However, you also need the right skills to pick that best carb cleaners for your family. I'm having the stalling issue with my F150 too. - Duration: 2:15. 7MPI 2003 Well I have about all the bugs worked out of the boat other then while running for awhile or now what seems after the boat reaches normal running temp the engine will start to stall out on me and cut out The idle of a car engine is kind of like a human heartbeat: You can tell what shape it's in just by listening. It is possible to have a coil that works when cold, not when hot, or even somewhere in between (OK at low RPMs, not at high, etc. Great experience dealing with them and will be going back. As I continued to back off on the throttle, the engine stalled. The left motor idles at 1400 RPM and the right motor idles at 800 RPM. The motor runs great for the most part. a The simplest way is a check on the RPM's first. By Pierce Hoover. 11 to 15 RVP (cool to cold weather) fuel will change from liquid to a vapor at lower fuel temperature than 8 to 10 RVP (warm to hot weather) fuel will. The problem was fuel pressure. But if i kinda play with it a bit to get it over 3000rpm or so it will run fine. If you are not hitting the RPM's and it is bogging out on the high end, this also suggests a Lean HSN. Normal maximum RPM = hull problem. The fuel pump has just been changed, I was wondering if there is a fuel filter or something simple I&#39;m missing. This thing is driving me crazy. I have a 1987 supra comp ts6m. It occurs when a vibration is started from a nicked/out of balance prop, a change in the hull or sometimes, no one knows. The fact that the tacho works intermittently is a big clue, this sounds like an ignition fault. a. Yanmar:LP Series 1996 American offshore 2600 NSX 1,177 h. Why would my boat stall out at high rpm? i have a 1990 sylvan 188 barritz with a 4. Here's the situation: ran down to the rockpile yesterday (1 YT in boat, 1 released ), boat ran great on the way down. I may try the vst and high pressure filter but my thinking right now is maybe the anti siphon valve or a pinched line. Electric pumps are pushers and not good at suction. ethanol gas in the boat's tank. At the dock it was fine. b. It does not die, just coughs and sputters until it's bumped up above 1600. Before the engine would run full throttle at 4200 rpm, after the fix it is around 6000 rpm, and smooth as can be. Marine Diesel Engines. It will cruise all day at 1/2 throttle but it shuts off about 75% of the time when I try to move it from 1/2 throttle to full throttle. ( Direct ignition is used on this engine to significantly reduce this effect, but it still happens). Engine Stalls after running high RPM's 5. Check the filter in the pick-up tube my was totally caked and not letting enough fuel through I just figured it out but snaped the fitting trying to put it back so now I'm trying to find the 90 degree fitting and the one connected to the hose. This high-torque operation puts a tremendous load on the pistons,  If any of these is lacking, the engine may stall. No more stalling at idle or flooding out. 2)HOWEVER, it is best to have the HSN set correctly first. At first I would have sworn it was fuel related based on how it felt. On older engines with carburetors, cold stalling (and hard starting) is most often due to an automatic choke that is sticking, misadjusted or broken. The boat ran 80 gallons through before the problem reappeared. There is no crank sensor on a carb engine, the tacho gets its signal from the neg side of the coil (grey wire), I would first disconnect the tacho to make sure that isn't causing a problem, if it contunues then its either the induction coil under the rotor in the distributor, or the Hall effect Today I took out my boat and it ran fine ,but after a couple of hours of running, I started to head back to the harbor. Find out what type of fuel is in the boat’s fuel tank. I waited 30 seconds and attempted to restart, but it would not maintain idle. I 460 Ford stalling at high RPM The boat will start to bog down and I can pedal through it for a little bit but eventually it dies out on me completely. If ran at 3000 rpm, never stalls. rebulit checked the fuel line and put new gas in it. Measure the resistance from - terminal to the high voltage output cold,  18 Sep 2017 The higher rpms, the more flow you should feel. Fuels containing alcohol are more likely to vapor lock on hot days. If the operator cannot see the mechanic while operating the boat then you should also have a spotter. Since new I have had issues with the motor sputtering, rough running, RPM floating up/down at same throttle setting and stalling between 1000-2000 RPM. Took it out and it went to 4,700rpm then cut out, I noticed the secondaries werent opening so I put in a lighter spring, that made them open, so I took it out for another run and this time it Dalt1, thanks for the quick reply I have not use the boat in the evening much this summer but i was pretty certain that when I turned on the nav lights and interior lights from the touch screen and hit the night view. It's like a hesitation. Question as answered Which is better torque at low rpm or torque at high rpm? Max Power (bhp@rpm) 118 @ 3750 89 @ 4000 89 @ 4000 126 @ 4000 Max Torque (Nm@rpm) 320 @ 1750 200 @ 1750 200 @ 1750 265 @ 1900 Which of these is better? 27 Jul 2008 However,when I run boat in the water, it coughs, sputtters and stalls just about . Did a compression test, charging system test, and gave me tons if advice in adjusting the carbs if I need to. Are all 6 cyl's firing? Are all spark plugs hot to the touch? At some RPM, the trigger base electronicly changes trigger coils. Hi guys, report shows max rpm 6000 When i bought the boat the 2 motors were running 5800 rpm, 2 years later the motor running 5600 rpm, motor running perfect with no problems, 6 month back, i replaced the spark plugs, clean the prv, replace the thermostats, and replace the impeller assembly. eventually stalls. And obviously, shifting this fast can be hard on the engine; it’s okay to do it once or twice to save the day, but before taking the boat out again get that valve fixed. 10 Dec 2018 You would notice a higher than normal idle, or an extremely high idle. The problem has ocurred before, a year ago. At high rpm it boggs and sputters and won't develop enough rpm to plane out. over 42k in engine built by Merlin marine in Georgia Bravo xr taxing outdrive upper with speedm aster lower Stainless headers , Boat cruises at 2,800 rpm Our heavy duty 400 features heavy duty clutches and bands, valve body and lube modifications to provide a durable transmission ideal for light trucks and passenger cars. Boat cranked right up on the hose and I let it run for about 5 minutes, everything seemed to be fine. When I began to come off the throttle, the engine started to sputter and die at 3000 RPM. Well I ran to the boat and notices that the hose connected to the tank was corroded, as I was taking it off it fell off in my hand. They could be normal, high, or low, and this will pin point the place to look: A. . 61 million power boats in the U. Read Comments. Learn more with the Champion Diagnostic Center. This year--same deal: put the boat away with no sign of [problems] and came back on Friday after work and yet again same [problem]: won't run over 4,000-RPM. or run at such a high RPM it was ridiculous, if not down right scary, . not sure my idea still applies unless out of water at 2500 rpms is very . Other surveys note that 29% of all households, about 34. The back pressure while in the water is a different beast. Try pumping the primer bulb as you get over 1/4 throttle, see how the engine reacts. Had it serviced, the mechanic replaced all the filters except the one at the injection pump. Updated: August 31, 2017. not run well at high speed At throttle, engine will run for a set period of time, then stall without warning. I've only had the boat out once since the dealer visit and I'm taking it on vacation for a week in the lower Chesapeake Bay on 8/12/06. Since than I have tested the fuel pump, changed the fuel filter, and rebuilt my Holley 4160 carb. I have had a fuel pump deliver normal pressure right up to about 2500-3000 rpm and then drop off slowly to 0. There is no crank sensor on a carb engine, the tacho gets its signal from the neg side of the coil (grey wire), I would first disconnect the tacho to make sure that isn't causing a problem, if it contunues then its either the induction coil under the rotor in the distributor, or the Hall effect Weird cutting out issue at higher rpm High Desert of Hesperia Calif When it happens it literally cuts in and out Not maintaining an rpm not stalling right out As soon as the boat stalls, it starts up instantly, after idling a few minutes it will go good full speed just for a little while, then die again. I had the same problem with my 88 ProStar, ran perfectly under about 3000 rpm, but would just run out of fuel at high speed. Now I can pull a skiier for about ten minutes @ 3300rpm without any problem. I put 5 gals. I put it back in this morning and same thing. Top 10 Reasons Boats Break Down. At idle it runs smooth, try to run in mid range good luck. According to a National Marine Manufacturers Association survey, there are 10. It begins to sputter until I either ease off the 11 Aug 2004 [Archive] Engine stumbles at high speed Engine / Drive Train. My dealer upped the RPMs from 700 to 900 and it is still almost stalling when I throttle up slowly most times. My electric pump was not up to the job so it was swapped out with a higher end pump. I have a late 80's Mercury outboard motor on my boat. Other times it would go into power reduction as showed on i-command Diag Soft doesnt show any stored codes for the power reduction event. We were able to get the boat after plowing for 3+ min, at <2000rpm while towing a boarder and after shifting all weight to the bow to plane off and then were able to gradually push the rpms to 2300-2500 without stalling or loss of power. My boat dies (not under a load) in neutral when I adjust my curb idle screw below 1000 rpm's. I had the same issue with a BBC engine. If you pin the throttle it jumps to 3200 and then strugles to 3600 and then a rocket ship. I've had the carb. But at certain rpm, the fuel float starts RIDING UP the spindle and shuts off the fuel pump. 5 Mercury Outboard Motors on the Sea Marlin Fast Boat - Bali to If the ratio of fuel to air becomes too high or too low, the engine will run poorly, especially while accelerating. In 15 minutes, the coil can get so hot that you cannot touch it and it will start to burn up and start acting up. Weird cutting out issue at higher rpm High Desert of Hesperia Calif When it happens it literally cuts in and out Not maintaining an rpm not stalling right out The problem: 9. You will need a mechanic and an operator to test this. 3s on 2 different boats! It eventually turned out to be the float setting in the float chamber. Mixtures that have too much air and not enough fuel are lean and tend to reduce the amount of power available under load and can cause If I take it up to higher RPMs while in neutral, it will run fine, but when I drop it back to idle it will die. 3 mercrucer moter boat runs great up untill 3500 rpms then it cuts out i thought it might be a fuel filter but i changed it and it still cut out. 1987 four winns v6 inboard engine Can get to high rpm but when put to forward or reverse it dies. Intermittent cold stalling problems are almost always fuel-related. It kind of stalls a little, jerks a little, surges, is not smooth at all. When diagnosing a car engine with a clogged fuel line, you can rev the engine to redline all day long in Neutral or Park, but if you take it on the road in 2 or 3 gear Wide Open Throttle, the engine will fall flat 2 to 3k RPM and and at times stall. no back fires. Once it’s in gear and running, your problems are over (throughout the RPM range). I decided to go with the wind so I could open it up and it stalled out. I took the boat out of the water yesterday to clean it up. Boat stalls going from neutral into full throttle Not rated yet Engines that run poorly or won't start reliably and stall out may have entirely different As for ethanol fuel damaging boat motors under loads and high RPMs,   Then a outboard motor has fewer acces. I can also idle around just fine. johnson outboard 9. So today got back in motor is now hooked back up to boats fuel tank and now it won't troll. It’s located under the High pressure fuel pump; it’s made out of aluminum and will corrode. If the boat is performing poorly and the maximum RPM's are normal and what you are used to, you can look to the hull and some of the external parts. 2 install a 10 micron filter with a water separator on it. Cold stalling problems are the most common because the engine needs a richer fuel mixture to maintain idle speed until it warms up. These should be done while the unit is running at idle and also at different RPM's while on the water not with the rabbit ears. Caution: Do not adjust stock motors above 4300 RPM in that the engine will float the valves and this can lead to dropping a valve in the cylinder, bent valve stem, etc. Starts great and ildes great and will even run great at low RPM, but when you try to accelerate the engine falls flat on it's face. ) I put oil pressure alarms on our engines. I had this problem twice with 4. 30 hp Mariner (yamaha) stalls at high RPM I took it kind of slow heading into the wind then I got to my spot fished for a while and went to move. I thought it might stall a couple times. if i bring down the rpm fast enough when it starts to die it will keep going. How many hours per year do you put on the boat? 6 years is a long time . I am having problems with my outboard. I've replaced the boat and motor fuel/water separator/filters, but now thinking maybe the low pressure fuel pump check valve? By learning these common engine faults the boat owner can save money and time resulting in more enjoyment on the water. I checked the inline fuel filter and checked for debris. A carb cleaners helps you in one or many other ways whenever required. Also the pump needed to be lower than the fuel tank. of fresh 87 oct. Did the fuel shock treatment while doing it ran boat at 1500 rpm, put it down to trolling speed were boat ussually stalls and it ran great no issues for an hour, so I assumed problem was solved. Bbc Merlin 555 block with Merlin heads , full roller , bds 8-71 blower . Many times you will find water in your bowls which could also be causing this. 88 Baja stalls at high rpm 88 Baja 240 Sport, 454 MAG Pulled my boat out from winterization a few weeks ago, put everything back together and put new fuel in. How long does it run at high speed until it "loses power almost totally?" Did this just start and if so, was anything done to the boat or motor shortly before or is there any other information that you can give us? Are starting, idling, and acceleration OK? Has the motor ever overheated before? A model number and serial number would help. Comes with our heavy duty 1500-1700 stall converter. This is because a rich fuel mixture is over-saturated with gas, causing ignition problems. We strive to give our customers the right product, with the right qualities. water is a fluid clutch allowing slip at low boat speed, high RPM which would stall a single gear car. The engine will hesitate & sputter but stays @ 3000rpm. 0 liter mercruiser running rough at high rpm; 3. Regulator could be stuck causing too high pressure, and over-rich condition. Took the family out fishing and my boat started to surge after I got it up on plane. So I took my service manual and started following the troubleshoot steps. It seemed that the constant vibration had caused the float arm to gradually bend until it couldn't let enough fuel through. 9HP mercury won't accelerate. Bucks a bit, slows down and then stalls. 97 mercury outboard stalls out during acceleration; boat engine stalls at high rpm mercury; boat motor stalls when put in high gear; boatmotor stalls after putting a load on it; cause of boat engine to stalls when put in gear; mercury 9. Just remember not to shift back into neutral, or the engine will cut out again. Here is the problem: engine starts and runs at low RPM fine. Boat Repair Forum > Outboard Motors Forum > Yamaha 2001 Yamaha 40hp stalling at idle but runs fine at high rpm; Stalls at high speed 2006 Yamaha 150 hp 4 Henry has a 2004 115-HP 2 stroke. When heading back I noticed when I would push the throttle forward the engine would end up dying at about 1700 RPM (Yamaha tach says"17") I limped back to the harbor at 1600 RPM as that was as far as I could push it without the engine stalling, and the engine was running very I posted about this same problem 2 weeks ago. At high speeds it runs great. But, I had the same problem a while back. The low end power was great but it would lay down at high rpm. Also, it isn't really a surge like in the video on that post. My 2003 2 stroke 150 merc runs fine at 1/2 throttle but dies out at full throttle after about 3 mins. Again when I decelerated, it stalled as well. This only occurred under load. Hope this helps. Engine is working hard but im just not gaining speed. Just my 2 cents! Boat Engine dies under load high rpm Starts and runs but when you put her in gear she stalls. Turn the key, no start. Should be 36psi. Ok now I am confused. I usually put Stay-bill in it, but this time I used heat because of the water I saw in it last week. It continues to rev higher but very slowly. Runs fine Plowing? Stalls on plane when you hammer down? Usually 2 things cause this 1 rebuild your carbs the high rpm needle has pitted, gummed or the O rings have gone to crap. If I were loosing a cylinder intermittently at high rpm do you think it would behave in this manner? The following information contains troubleshooting testing procedures for engine runs poorly at high rpm boat overheating at high rpms; stalls or engine Keep in mind that under load, depending on the boat, boat load and altitude, your boat will run at a lower RPM in the water. If I take it up to higher RPMs while in neutral, it will run fine, but when I drop it back to idle it will die. low rpm is fine. The boat took a while to warm up and stalled if under 2000 rpms. I narrowed it down to it stalls whenever it hits 2000 rpm, accelerating OR decelerating. Will immediately return to 4500 rpm for 3 minutes then stall again. While buying a new carb cleaners, you must have all the precise and complete knowledge about it. It was clean. Richen the High Speed needle. If Hey again, i got a problem with the ski stalling if i gun it from idle. When this happened I backed off the throttle and got it back up to 4500 rpms where it ran smooth again. Engine will also run at 5,000-RPM (WOT) fine. No help. Idling around waiting for the fireworks, the boat shuts off. I put about 40 gallons of fuel in it with 2 bottles of heat. one of those 3 ( Cant remember which one ) turned on the underwater lights. Best of the best intervals . Mixtures that have too much air and not enough fuel are lean and tend to reduce the amount of power available under load and can cause Why would my boat stall out at high rpm? i have a 1990 sylvan 188 barritz with a 4. It would drop 300-400 RPM and come back. 9 on pontoon. It took a while to get it started again (I was kinda sweating it because I had my 4yo son with me). Explore Blackfin boats for sale. After a cold start I will often get near-stalls moving out of slow to high That is, I go back down to idle but I can tell the RPMs are still falling off  It would drop 300-400 RPM and come back. I can get Sudden or excessive throttle adjustments can lead to loss of control and cause your boat to strike the dock or another boat, so your goal is to shift into gear without exceeding idle rpm. A stalling boat engine can do more than just ruin your day on the water - it can cause a real safety hazard. View this 1993 Blackfin 33 Flybridge for sale at Stan Miller Yachts, located in Long Beach, CA. Nitro Boat Tuning Guide 1)A "bogging" delay from idle or low speed suggests a lean LSN. Start off with a simple compression test both hot and cold and hopefully that will eliminate any major The boat will run fine until i hit 4,000 rpm, it starts popping/ cutting out. I'm not sure what the idle is supposed to be but I would think around 3-400 RPM, right? During the test drive he put them in to gear and I heard a loud thunk probably due to the high RPM's. P. Problems with idle speed—things like slow idle, fast idle, rough idle, or stalling after idling for a few seconds—are symptoms that something is wrong with your engine. As the engine RPM climbs, the voltage supplied to the spark plug by the ignition coil drops off slightly. And to have a high torque, the motor should run at lower speeds. gear motor for window lift gear motor for waste disposer gear motor for vending machine /game machine gear motor for valve gear motor for vacuum cleaner gear motor for u loop lock gear motor for treadmills gear motor for toys car gear motor for toy car gear motor for toy boat gear motor for toy gear motor for the grill gear Motor For teaching robots gear motor for strongbox gear motor for Hi everyone i will have to tell all the story so someone can give me the good answer boat at the begining of the season runs great then one day when i returned from the other shore of the lake , i was a great condition lake to try at full throttle the boat , the lake was a mirror It's ok at lower speeds and then i get on it a little and the Rpms rev high but the boat doesn't pick up speed. Internal pump may be weak. drained tank refueled with high octane non ethanol replaced fuel filter replaced water fuel filter replaced TPS sensor 1998 MOOMBA OUTBACK Here's the situation: ran down to the rockpile yesterday (1 YT in boat, 1 released ), boat ran great on the way down. 9 stalls when throttled back; fuel injected boat engine stalls once i increase idle; mercury motor stalls Today on the water, boat started great, left the dock great, then accelerating it stalled!!! I started it back up and punched the throttle hard to 3000+ rpm and ran fine. Typically Generate less torque when run at higher speeds. To correct this the LSN should be richened. May need an idle jet and/or high speed jet adjustment. of this stored gas and 15 gals. S. to determine which props you can and should be running on your boat. If the ratio of fuel to air becomes too high or too low, the engine will run poorly, especially while accelerating. Last year I went down to use the boat, and [the OptiMax engine] would not run over 4,000-RPM. If There is a phenomenon that hits a very small amount of engines that causes the motor to stall at high rpm. speed when the A/C is on, when the alternator is under high load or when the temperature is extremely hot or cold. I'll try to explain it. do you have any ideas? Update 2/3/14: So I think this problem is solved, I've run the boat a couple of hours with no issues. Remember, "slow is pro," and everything you need to do to properly control your boat can be done at idle speed. If i wait a little or shut it down for a bit it seems to correct itself. 0 4 cyl mercruiser overheating at high rpm/hot water going out intake; 3. Right out of the marina it would run great, no problems, but after a while especially if I was cruising at low speed I would lose all of the power when trying to get on to plane. starts fine. After this the engine won't go over 3000 rpm no matter how much throttle is added. Pump the throttle, boat starts, shuts back off. This unit is rated to 400HP/450 lbs of TQ and is available in both Chevy and Buick, Olds, Pontiac and Cadillac applications. Why boats break down, and how you can prevent it from happening to you. Should remain steady, even at full throttle. comfortable with previous It could be a number of different things, and I am by no means an engine expert. Intermittent stalls that seem to happen at random are often ignition-related. 7 mpi wont turn rpms; 3. I have tried seafoam in the gas and new plugs. Boats For Sale: 1996 Sport Nautiq Asking: $12,450 84 Nautique 2001 stalls after warm up I am able to briefly rev it up to high RPM and no problem with the High Torque High RPM Brushless DC Motor is a relative but not absolute. The lines have been replaced from the tank to the motor. boat stalls at high rpm

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