Motorcycle Bogs At Full Throttle - 2002 Polaris sportsman 400 bogs and sputters when giving it.

Adapting a go-kart with a motorcycle engine is a project that, while complicated, can still be accomplished with simple hand tools and a good plan. Cause #1: Fuel Intake Adjustment (Carb) A motorcycle carburetor (just like any) runs on a ratio of fuel vs air intake. Bike went through everything I threw at it. Sometimes it sticks for a while, sometimes it's just for a second. 1294 Views 4 Replies 2 Participants Last post by Sharkmonkey, Oct 27, 2008. com and follow the user links to the parts diagrams and take a look at the construction of the carburetor. Upon first glance at a Suzuki motorcycle, the engine size may not be immediately apparent. JAMRACING21 Discussion starter. The easiest way to test it is to do a throttle-chop test. Damaged Throttle Return Spring. a 1/4 bog is most often due to incorrect clearance between needle (straight portion) and needle jet. When I initially start the scooter, it runs …. ** IF ON THE FIRST TURN IT DOES NOTHING OR IDLE GOES DOWN- GO to 2. low income apartments for rent in naples fl How to Adjust Air Fuel Mixture at Different Throttle Positions on a Motorcycle. Alternatively, it could be due to a problem with the carburetor, such as a. There are other reasons why a leaf blower can bog down and those will be covered in the rest of this article. Basically, she'll start up fine and idle around 1500-2000 rpm (full choke) but upon going to 1/2 choke or giving her any throttle, she dies. It will bog out between 5-6k RPMs and want to stall out. Mind you, I have no experience with bikes and just started riding in June. It has Cobra pipes on it I just cleaned the carb. The common causes of 2 stroke bogging at full throttle include using the wrong gas mix, dirty or clogged air filters, damaged spark plugs or barrel gaskets, and damaged intake manifold gaskets. Due to incomplete combustion, the fuel would even ignite in the exhaust system, as visible by. Also check your Spark Plug for carbon soot and clean if necessary. 040 and I have a K/N filter in the canister. May 24, 2010 · Well the cylinder where the spark plug goes into was stripped. it will start up just fine and if you give it more than half throttle it will spit and sputter and backfire then just die. Happened to me once where it wasnt sitting right and would cause my bike to bog when opening up throttle. If it's bogging at high RPM, no amount of TB syncing is going to fix that. Confirm the engine is on the mark, that the cams line up. Bought the bike not running, carb was completely full of gunk. The good news is that this issue can be easily resolved by cleaning the carburetor and intake, which are most likely clogged and causing a restriction in fuel flow. Battery voltage was reading 12. But when you turn the throttle it bogs down under a load. For a detailed understanding, let's discuss the probable causes as follows: Carburetor-related issues. A dirty or bad carburetor is another common reason for a dirt bike to bog on acceleration. I just bought a 2011 Ninja 250r and it bogs down at 3/4 to full throttle. Two wheeled physics (Squid Farm) General Bike Talk 06-07 GSX-R600/750 GSX-R1000 …. If the fuel filter is bad or clogged, not enough air reaches the combustion chamber, and the engine bogs out. obituaries in alliance ohio - I have pulled the intake manifold and drilled. Bogs down when I throttle it up Polaris JA: I understand that your Polaris motorcycle is experiencing a bogging down issue when you throttle it up, and the motorcycle Mechanic will be able to help you 2004 Polaris Sportsman 90 bogs down with a load or full throttle. help; By Ratatouille Ma ta, March 1, 2019 in Motorcycle Jetting & Fuel Injection. For this type of motorcycle bogging on acceleration, riders might notice this as a lack of immediate power when they twist the throttle, resembling the sensation of riding in a higher gear than. I rode the bike for 2 1/2 hour @ 60-65mph. Restore Your Engine's Internal Compression. When i use the choke it doesn't die i can ride it around with the choke out but no throttle. I've tried a Yost Power Tube and that didn't cure the problem. com is also a seller that specializes in bank-owned Harley Davidsons tha. Once both are cleaned, I'm confident that. I'm no expert on the intricacies of a rich condition, I just know it's rich. Pull until the gauge stops moving. Jan 24, 2004 · The main jet affects full throttle mostly and not much below 1/2 throttle. I've have the carburetor out of this thing 3 times. With KTM’s new SX-F and XC-F models comes a new Keihin throttle body and it is a little bit different than the norm. Motorcycle carbs have a few circuits that effect different throttle positions. Comment below or see the thread asking for help at https://49ccscoot. Took it through town doing 30-35 all good could wait to open it up. Without it you will get symptoms like you describe. Follow the simple steps to avoid bogging with regular maintenance and cleaning. (it's 115 degrees here) I pulled over checked for leaks it kept running. With TORS it is the big screw under seat on top of. Start with it at 2 turns out from lightly seated. I cleaned the filter, tried new gas, changed plug to no avail. I've got a new-Used 2020 Ski-doo Summit SP 850. Ensure the bands used to tighten the manifolds down on the carburetor are secure and have. link to the forum page where I have the problem described and what I've done so far:http://www. , may cause undesirable bogging while at full throttle. mine will sound like its hitting the rev limiter and have no full throttle at all. It also has a new filter in-line and a near-full tank of fresh gas. If it bogs at full throttle – check the main jet for issues, dirt, resizing, etc. I will be putting the carb back in tonight. Dirt in the carb clogs the jets, creating fuel flow problems. Not enough fuel it won't transition or speed up properly and too much high speed will bog under full throttle and too lean will burn the engine up. Before loosening Torx screw, look at how the sensor's green reference mark ligns up on the front, with your head against your front left turn …. the carb is clean & the plug is good also, the filter is good. If it idles fine but it bogs down with throttle, your high speed gas jet is probably clogged. Up to 60% Off Clearance at Backcountry. Jump to Latest Follow A forum community dedicated to the Suzuki GSX-R motorcycle. I adjusted the float height to manufactures spec and pilot/air screw to 2 and. It has on it a PZ27 carb but it was missing the air fuel screw so it really didn't want to stay lite, so for 15 bucks bought a brand new PZ27 carb on ebay. I replaced, the pilot jet, all the main jets, the needle valve and float. sorry for the lack of clarity on my part,2001 cr125. When you’re looking to buy or sell a motorcycle, it’s important to know how much it’s worth. These are just a few reasons for two-stroke. will synthetic urine work at quest diagnostics This Briggs & Stratton V-Twin engine is from 1998. Hey Everyone, I’ve dug through a bunch of topics looking for a solution to an issue that just started this past weekend. Any stickiness should be addressed prior to a day of riding. Ford recalled approximately 1,600,000 vehicles fitted with an electronic throttle body under a customer satisfaction program. bike: 2003 ktm 525exc recent rebuild with kibblewhite +1 valves and wossner 12. Adjusting the needle height with the clip position is the simplest step to see if it corrects your issue. The bike will run at a idle and up to half throttle but soon as full throttle is hit it bogs and dies. Fresh 89 octane+2cycle (50:1) has been added as well. On the top of the carburetor is a silver plate with 3 small Phillips head screws. It starts fine, runs absolutely fine through the first 3 gears. It was running rough when i pulled the carb now it idles perfect but bogs down under throttle. When you experience running problems with your trimmer, the first thing to check is the quality of the fuel. Make sure the resistance rises smoothly as you turn the throttle from idle position. Bike: 2008 V-star 1100 Custom,3K miles, piped, pods, AIS removed and jetted. The engine is the heart of the dirt bike, and any issues with the engine can affect its performance and cause bogging or hesitation. In the past I've done bbk's successfully on two 50cc engines. Whenever you pull the slide out, take the needle out of the slide and move the “c” clip on the needle up one slot. You don't have to modify the airbox and exhaust, but it will make the bike breathe better and run better. However, there are some things you should think about carefully before jumping into a purchase. The exhaust smells VERY rich (dark, wet spark plugs too). ppg paints arena view from my seat Here are four reasons a snowmobile bogs at full throttle: You need to replace your fuel filter. so at full throttle, jet size is determining the amount of fuel getting into the cylinder. This lets the secondary carb open fully and asap. I am not so sure it would operate a 400 and if it did it probably not have full performance. Drz400 idles fine but given any throttle it chugs, backfires, and sometimes dies. When it occurs, the performance of the outboard motor will be very poor. If the problem persists, I would then. my '90 gsxr bogs at about 6k rpms when running up the throttle while the bike is at a stand still. have you tried removing it? it is possible the filter can't . The fuel screen at the end of the pick up tube in the tank got clogged as I ran in the water and strirred up the junk in the tank. Aug 28, 2013 · I need some help. It is completely stock and I have pulled the carb and cleaned the 3 jets. I am running a 180 main, 40 pilot, and a 55 leak with the fuel screw turned 2 turns out at 5300 feet. You’re Using Dirty or Old Fuel. ap physics 1 unit 1 progress check: mcq Resistant or Damaged Throttle Cable. 3500km, I've had it out 4 times this year and i'm noticing some performance issues. Most ignition problems on those are from that switch. This raised idle speed and fast idle speed a bit which. That is, when fully warmed up after ~15 minutes, stuttering at mid throttle, and when coming to a stop will die w/out throttle blips. It's been bogging out when I give it 1/2 or full throttle. Could also be tired carb diaphragm (s), which could call for a carb rebuild. If so, I wouldn't know how to pick the right one. If I keep my throttle applications to 3/4 or less, the sled functions fine. it does a lot after it warms up. THe carb was fresh rebuilt from CPW. One of the most common symptoms of a bad throttle body, or throttle position sensor, according to Reference, is when the car either hesitates to accelerate or stumbles during accel. Turn the ‘high’ screw completely in and then a turn and a quarter or half out again. If I do anything past 3/4 to full it bogs down and dies, this happens in neutral and when in gear. If the belt is making it all the way to the top of both cluches, then check your main jets. So I changed out the fuel filter, didn't work. When I first noticed the problem it was a jerking at high throttle and RPM, but would not fall to idle. Night and day difference at full throttle, not bogging or anything like that. Hmm interesting I'll check it I just replaced it about a month ago. The main reason for the bike to die with the throttle is due to the imbalance in. I tried changing the plug and drain the carb. Shortly after that I installed an aftermarket exhaust, air intake, and a. I also checked the voltage to the pump. The engine bogs down (seems to be choking. So idles and runs fast good, … read more. I've put hours and hours into this. SOURCE: yz 150f bogs when you give full throttle all at once. I had the carbs cleaned and rebuilt ( just got it back in fact). Really need help I’ve cleaned the carb 100 times, bought a new accelerator pump the old one was shot and the rubber was torn, brand new battery, new spark plug but yet it still bogs at like 1/4 throttle and dies I have no clue what’s going on please comment any suggestions I also checked the air filters theyre a little dusty but nothing that should …. Adjusted float for both a lean and a rich condition, but all signs point to rich condition. Tore the motor down put in a new timing chain and the valves have …. Check your plugs to see if any are loose. The carb was pretty dirty and I got it nice and cleaned up. spray the carb cleaner into the fuel line, completely fill the hose if you can 5. Sprayed wd40 around boots between engine and carb, no throttle increase. Blow out all the passages and jets. Lean bogging and rich bogging, which may be distinguished by the sound the bike makes when you throttle, are the two prevalent varieties of bogging. I took it to the shop where the cleaned the whole fuel system out and tested the injectors. Received 475 Likes on 422 Posts. I recently inherited a 1982 Goldwing GL1100 and had the carbs serviced right away, and ive noticed that when i hit the throttle, no matter what gear im init will bog down at 4500RPM. Then you can pull the whole exhaust chamber off. FYI float at 7/8" from gasket face to hightest point of float, air screw 2 turns out, idle lowest to keep it running, replaced o-rings on manifold with gaskets. if you let up on throttle it might clear up. I have a full exhaust and the mod for no airbox lidIcarbs set 146 main left,148 main right,clip on the needle is set 3rd from bottom or 4th from top on both carbs. Seems like you make have some debris clogging your fuel line. Then noticed exhaust w … read more. lazyboy leather repair kit it does the same when riding it bogs down when i accelerate to full throttle aggressivly is this du to wrong jets or bad mixture setup. if you catch it in time you can grab the clutch and feather the throttle and it will clear back up but if you ever let it cut off it takes a little bit to get it started back up. If the RPMS go up REPEAT #1 UNTIL the RPMS GO DOWN OR NO CHANGE (then go to b). Also I think this is the result of the TPS issue maybe. There was plenty of junk in the filter just from age and. atvfanatic1928 Discussion starter. It runs fine at a bit less than full tho. THIS LINK is for mikuni's specifically but the theory applies to all, it may help some. This is a very significant bog, complete loss of power. And it seemed to be running really lean. well just for future reference, my ktm 200 did the same thing, which is the same motor with a different bore and stroke. Idles great takes gas great in neutral. Are you on the lookout for some fun and exciting online games to keep your little ones entertained? If your children have a fascination with motorcycles, then you’re in luck. Stutter or Loss of Power with load or open throttle. Engine Dies And Runs In Spurts - Harley Davidson Community. Anyway, now that it's all back together the bike idles great but it has no power when I hit the throttle. Learn the causes and solutions for motorcycle bogging down at full throttle, a common problem that affects engine performance and fuel economy. Solution: Most dirty air filters ( foam, paper, or cotton) can be cleaned or replaced. You should see the vacuum slide and the main jet needle. I went to go for a ride and could not get the bike started. com motor bogs down at full throttle Page: 1 - iboats. Key reasons for this issue are given below, accompanied by effective solutions. 40-50k miles, +1-2 chain and sprocket kit, and god knows what else. Over time, fuel breaks down and can form deposits in the fuel system. On the interstate in 6th at about 70-80mph when I open up to full throttle the bike bogs down, if I release the throttle just a tiny bit the engine picks back up and pulls fine. If it revs you have a vacuum leak. KTMarty Been here Up to ½ throttle it works ok but WFO there is no life and bogs and eventually get moving. I'm working on a 1985 polaris trailboss 250 2wd 2 cycle quad. domino hours The pops could also be normal for this engine, and a louder exhaust just allows you to hear them. In case of any blockage, you can clean out the filter or replace it with. zillow rent to own las vegas nv Suzuki GSX-R Motorcycle Forums Gixxer. Problably sand got into main jet in carburetor and bike lost power on full throtl. Put a new head on it and cleaned pilot jet and it finally fired up. Quarter throttle, rolls through any rpm, half throttle and up, bogs down. 3) Wide open Bog - Secondaries mechanically open near the 80% throttle and if there is enough vacuum the air door (large plate on top) will start to open. The main jet affects from 1/2 to full throttle. The air filter was also clogged. Recently, I cleaned it up and drained the old gas out of it. I bought a 2015 rzr xp1000 Thursday. HELP!!! Engine bogs at high rpm. I haven't got a bunch of experience. bike rides nice but it bogs out at full throttle 3/4 throttle is great. TPS faulty? Is this bike one of the "ride by wire" throttles, or do you have a good old throttle cable . Since then, the throttle has had so much slack in the cable that if I were to twist it all the way out, I can twist it back about a quarter turn before theres even any tension. Originally Posted by militant_man. Start by rotating your Main Throttle Sensor (lower) counterclockwise by a very small amount (about 0. A dirty air filter, water in the fuel tank, clogged carburetor jets, slack throttle cable, or torn carb slide diaphragm may also. Decided break-in was complete and wanted to see how it would do a rolling wheelie. I kept cranking on it and it ended up firing up. He told me to take it to a shop and pay for labor and he will warranty the parts. just bought a xr650r 2001 ,when i give it alot of throttle it bogs or hesitates I put in full choke runs decent on high end and dies. While there check the fuel line and if squishy or brittle, change it. Bogs down when more then half…. I have a ttr 90 that idles well but bogs down at full throttle. When I bought the bike the guy said the petcock was bad and that there are bigger jets installed in the bike. Reading your post is making me re-think my current jetting. Spark plugs and spark plug wires. Otherwise this will also cause the engine to bog. Apr 12, 2018 · Bike bogs down at full throttle and high RPMs. Ask Question Asked 11 years, 1 but misfires every so often, barely identifiable. I have a 70' ct90 in pretty good condition has new battery plug wire/plug and carb. If it’s bogging while using 1/2 to full throttle before the powerband, then the main jet is most likely the problem. Find out where the air is coming out of and put your finger over that hole. But recently, it has developed a terrible bog when I give it any sort of throttle. I rode it basically all day yesterday with no problems. If the manufacturer’s specifications are available to comply with them however there is another way to make the correct adjustment. It has occurred under hard acceleration right on the face of a jump and sent me into a panic rev endo that I barely rode out of. Bought at auction and was sitting up for 2 years. The idle provides fuel both at idle AND to help the engine get up to where the main circuit kicks in. However, it doesn’t want to idle anymore, I have to keep some pressure on the throttle or it kills. The proper adjustment prevents the diaphragm from getting stretched to its maximum limit at wide open throttle. php?p=915609&posted=1#post915609. The air-fuel ratio is where you want to look, specifically the carburetor. You mentioned "bog" at full throttle - The air screw won't be doing anything at full throttle. 7L EFI did the same and after all checks possible the last was the answer. The bike bogs and loses all power in the high rpms from 2nd gear and on. These deposits can clog your injectors and carburetor, preventing proper fuel delivery. A too-rich needle can often be felt simply when revving the bike on the stand. Rebuilt top end, just rebuilt entire carb. Ive heard folks say that bogging between 1/2 and 3/4 throttle can mean Rich or Lean. It's like it instantly jumps or skips to the rev limiter without going through the remaining RPM. I have a 1994 ZXR750 and if I'm at higher speeds (85-100+) for more than about a minute it will start bogging down, 1/4 to mid throttle does nothing, 3/4 to full throttle brings the rpms up but it sounds wrong. DO NOT USE CARB CLEANER to clean the carb, use. Gas can oxidize and break down over time. Your bike can sputter for one or more reasons. Has tons of power just not at full throttle in the powerband. When it starts reacting better, limit your adjustments to 1/8 turn to. Spark arrester removed from exhaust. It drove flawlessly on the test drive but shortly after getting home it began giving me trouble. Maybe take some FLAMMABLE brake parts cleaner and spray it around the intake while the engine is idling. My bike will cut out every time when I'm at full throttle and start to over rev. chevy colorado for sale carmax All things related to automobiles that move on two wheels. Send Me The Guide, Now! Learn to quickly re-jet to stop the. At medium throttle or if I would goose the throttle it would stumble. A passage from filter side carb throat was clogged solid. My ruckus Boggs out and when I start picking up speed and around 30-35 that's when my ruckus gets to her old self and starts running but as soon as I slow down or come to a stop, it's hard to get her back up and running. Engine bogging is one of the most frustrating issues that arise when operating a snowmobile. Jul 17, 2020 · The bike ran fine at idle and when giving it throttle (doesn't hang high or dip low or anything). I only get a chance to ride it every so often. We've cleaned tank, replaced fuel shutoff, new plug, and finally put new carb - Answered by a verified Motorcycle Mechanic We use cookies to give you the best possible experience on our website. The bike was barely able to gas and it will not pick up power whatsoever. No animals in it though haha checked all the exhaust and intake. Bow the bike only runs when throttle is manually opened, and when I get to a full open throttle the bike in this thread in Register Home. If not, track down the leak and repair. When the fault developed I did the electrical checks as previously described. While driving in 5th gear or even second gear sometimes at low rpm if I give it full throttle it dies and at idle if I give it full gas it dies. 2014 800efi sportsman, high gear bogs down. harley jailbirds new orleans where are they now Harley Davidson remains the most popular motorcycle brand in America. I can get the bike going, but it has to work extra hard, and more than usual clutch is needed to get it going. Regular starts and it winds up good through the …. Once I take the bike out for a good 1-2 hour ride, it rides decently, after a hour or so, if I full throttle it, it seems to lose lots of power. Check all your jets and make sure you can see through them. I’ve found a way to manipulate it though. I have a 1999 prairie 400 4x4 its been sitting for a while but I did get it to fire and rode it around a bit but if you get on the throttle it doesn't want to go right away and when it does get up and go its sputters and backfires but will eventually get up to speed. Those are removed, the carb split, orings removed new orings (really a formed rubber gasket) and fuel proof sealant is used to reseal the two sections. lean bog is when the bike takes a deep breath and then restores. This was the cause of the bike to bog only on full throttle, and to only go 45 to 50 before bogging apon putting more throttle on. Bogging down full throttle, wont go past 25mph. I cleaned the air filter and have just rebuilt the carb and installed a dynojet stage 2 jet kit while I had it apart. The bike runs slightly better with a full tank of gas. So it's getting too much gas at full throttle even on that tiny 150 main jet (go figure). 2) Drained and cleaned all fuel lines. My VT1100 bogs down when I open the throttle in all 4 gears. 1 Why A Motorcycle Bogs Down When Accelerating? 2 How To Avoid Motorcycle Bogging On Acceleration. Make sure the gasket isn’t destroyed. Hi guys, i got an 08 yz450 I did the JD Jet kit and they recommended something like a 170 main and the clip in the 5th position i believe. 05 lt-z400 stuttering and back fire at full throttle Ok guys I hope this helps. So ive been having some trouble with bogging on by Z. As I was varying my throttle I noticed the bike bogging at about 3/4 throttle. Are you in need of a reliable motorcycle mechanic? Whether it’s for routine maintenance or major repairs, finding the right mechanic can make all the difference in keeping your mot. This Tech Tip applies to any 4 cylinder GoldWing (GL1000, GL1100 or GL1200). Carburetor: Carburetors alone can be both the cause and the solution to a chainsaw bog down. When fuel oxydizes and evaporates, it leaves a gummy. Warmed it up again for 20 minutes. Nov 17, 2023 · If your motorcycle dies when the choke is off, it’s a classic symptom that your engine is running on a lean air-fuel mixture. By Brayden Stringer, July 21, 2019 in Honda 2 Stroke. Purchasing a motorcycle is very similar to purchasing a car. However, when the accelerator is applied it instantly bogs down, even if a little bit, and misfires a lot. Addressing the full-throttle bogging dilemma in motorcycles becomes challenging without pinpointing the exact underlying cause. ) Look at the air filter as a dirty one would affect high load more than light load. If your motorcycle dies when the choke is off, it's a classic symptom that your engine is running on a lean air-fuel mixture. With enough petrol, it might even bog down. When the throttle is more than half, it bogs out or just spits and sputters. I got my bike to crank easily and run pretty fair while the 'choke' is out. Full throttle was fine and only full. the bike runs and everthing works fine otherwise, any suggestions would be realy helpfull. After research I found the main problem is a clogged pilot jet. There are a series of problems that can make snapping the throttle bog your bike. hrc_nick_11 Well-Known Member Also check that the float bowl vent tube is not cloged. Advertisement The BSA Motorcycles Channel incl. A blocked air filter will cause the fuelling to be rich – too much fuel compared to the amount of …. This has been covered extensively on how to mod it. The Scooters subreddit is for road-legal motor scooters (gas or electric), a type of motorcycle with a step-through frame. #Carbs #carburator #bog #ttr125le #dir. One of the possible reasons why your two stroke engine is stalling when revved is because of a clogged filter. However, it doesn't want to idle anymore, I have to keep some pressure on the throttle or it kills. It can be frustrating when the engine bogs up when you first start it and the throttle is pulled, but runs smoothly once it's warmed up. Potential causes include vacuum leaks, faulty fuel injection systems, or damaged vacuum lines. I've noticed that when I use full throttle, especially in first or second gear, I accelerate fine until about 10k revs or so but then all of a sudden it sputters/bogs down. When snapping the throttle to wide open the carb hesitates and bogs. (They're dirty is the most likely. First the basics '05 700 stock. There are several reasons why a motorcycle sputters. If this is the case, then the engine will be sucking in air without the petrol vapour to ignite and so causing a 'flat spot'. Turn it slow enough and no squirt. If you have trouble visualizing the measurement, hold a metric tape measure up to the grip. One of the boots was cracked, and was somehow shorting/not sparking enough to allow full throttle. On a 305, it should never fully open. I don't want to have to put it in the shop. KM 111R runs at full throttle with. I am trying to tune the carb cause when u give it full throttle it just bogs out. It just bogs down when you just yank the throttle all the way open. For 2-stroke you can use a synthetic blend or full synthetic. if the bike has been in a damp environment, water will eventually migrate into every connector body on the bike. When I went to get out of the ditch I lost power at 3/4 to full throttle. I would test the kill switch and throttle high speed switch at the handlebar plug. Once it transitions from low to high rpm adjust the high speed jet. The Motorcycle’s Fuel System Has Water in It. Even if you're holding the throttle wide open after you …. No, It's a separate circuit it just need a full bowl and throttle activation, can be done on a desk. July 23, 2003, 02:47:18 PM Riding on the freeway with my girl the otherday about 85mph on an incline and needed WOT, seemed howeverm that it would climb better at 3/4 than at full turn. It mainly acts as a valve that controls the amount of fuel and air going into the carburetor through the accelerator, regulating the power of the engine. I bought a $13 bottle of Sea Foam today and put half a bottle into a full tank of 93 octane gasoline. My brother-in-law suggested it needs a different fuel jet needle. CB350 K0 - Full restoration w/Hondaline bags & fairing. A loss of power in a 2-stroke outboard engine at full throttle can be caused by issues like a dirty or clogged carburetor, fouled spark plugs, damaged reed valves, an incorrect fuel-to-oil mixture, or a clogged fuel filter.