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Yz65 fouling plugs?
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Yz65 fouling plugs?
Designed with precision and attention to detail, this bike is built to withstand the demands of motocross and deliver a thrilling riding experience. Oil burning can cause oil fouling of the spark plugs, leading to misfires. Plug and Play is a simple Windows controller that enables your Windows computer to recognize and adjust to hardware changes and devices plugged on your computer such as hard drives. Despite my earlier claim of success I found I was still running into a problem of fouling plugs even after the air filter issue. Two strokes are relatively sensitive when it comes to carburetion. I had a complete wrebch rabbit kit put in it along with new clutches and a carb rebuild kit. How are you mixing the gas. PLUG Plug Power (PLUG) reported losing 13 cents a share on revenue of $15 Analysts expect. when that was fouling every 5 minutes, i went to a BR8 which still fouled but only once and i got about 20 mins more riding before it fouled compared to the 9. 35 (I have that memorized now), The 350 purrs like a kitten and runs great. If the spark plug fouls frequently, first make sure you are using the correct spark plug. As it warmed up through spring and into summer, the bike began to foul plugs, so, I thought that all we had to do was rejett it so we went leaner, still fouling plugs, then went leaner, all the way until we got the leanest here the bike. My yz250 is being a pain, it keeps on fouling plugs after 2 starts. Plus i cant go out to the trails until this problem is fixed, dont really want to be stuck 5 miles out in the hills. The line “fair is foul and foul is fair” is from the play “Macbeth” by William Shakespeare, and it means that what appears to be beautiful is actually ugly, and vice versa A single car has around 30,000 parts. As it warmed up through spring and into summer, the bike began to foul plugs, so, I thought that all we had to do was rejett it so we went leaner, still fouling plugs, then went leaner, all the way until we got the leanest here the bike. 1741 posts · Joined 2007 Just like last year's 2019's--except maybe worse--BOTH my 2020 Assault and SKS 850's are fouling plugs during warm up. Change or remove machine See stock sizes for this machine. All spark plugs keep fouling. 5 turns counter clockwise (out) make sure that you are doing a full turn 360 degrees and not counting a 180 degree spin as a full turn because 180 is only 0 When i ride my yz 250 it fouls a plug every few rides why is this it has stock jetting stock everything i ride 75% trails 25% mx and it seems to foul if i pin it in a low gear 2 or 3 or after i kill it when i try to start it some times it fouls i ise the basic ngk spark plugs that are like 3$ i m. Spark plugs have a crucial role in proper engine operation. Nine times out of ten fouling spark plugs is caused by rich jetting or a leaking wet seal. Designed with precision and attention to detail, it is a suitable choice for motocross enthusiasts. Rear Sprocket: 47 Tooth my bbc 454 in my 1970 chevelle has a magnum 286h cam with a summit street n strip carb electric choke 750 cfm. Remove and install the correct spark plug for your specific vehicle. 2022 Yamaha YZ65 - Totalmotorcycle. Jump to Latest Follow 1K views 0 replies 1 participant last post by Jonenbysk Mar 27, 2018 Jonenbysk. If more than 2. Anybody having issue with running way to rich fouling spark plugs? Spark plugs on back order Okay, so to start I got the bike on craigslist, rode it and the crankcase filled with gas and slung the rod out the crank case. I pulled the carb, cleaned it out, but can't tell what jets I should change, or if that is my issue. Front Tire: 60/100-14. I did the same and haven't fouled a plug. It’s not an old 2 stroke. Greetings: I have a 2000 YZ125 with a very recent bottom end AND top end rebuild. I just did a tune up, sprayed out the idle circuitry, set the timing to 10 degrees BTDC, adjusted valves, new spark plugs, oil change. The Online plug-in is one of several tools that bring ad. !!! He was fouling 1 or 2 plugs per ride. 2000 yz125 keeps on fouling out plugs. Quantity: Sold individually. Two strokes are relatively sensitive when it comes to carburetion. You may want to try a 58 or 60 pilot given you're a little higher elevation mostly. #287787 - 04/09/07 11:35 PM Re: 01 Yz125 fouling plugs every 10 min!! Gittinair Gang Member Registered: 02/27/06 Posts: 57 Loc: Capital 'o Tx Man o man, this is a great response you're getting here. 2000 yz125 keeps on fouling out plugs 2000 yz125 keeps on fouling out plugs just had carb reworked. On coil-on-plug engines you may need an inline tester for this. should i run a hotter plug or do something else to fix the fouling?? Carefully thread the non-fouler onto the spark plug hole, then re-insert the spark plug into the non-fouler. Apr 28, 2009 · Apr 28, 2009 I have a 1996 YZ125 dirt bike and it keeps fouling plugs around 3 hours on the bike. Sep 30, 2015 there are many things that can cause the spark plug to be wet with fuel such as bad tps sensor or need to be reset if removed, bad coil, tps sensor and air pressure sensor plugs crossed, fuel injector plugs crossed or pto fuel injector and rave solenoid plugs crossed, a bad air pressure sensor, or bad mpem The stock jetting here in the UK is 52 pilot n3ew needle 3rd slot 180 main. fouling plugs, an engine that loads up/has less than ideal throttle response, excess un-burnt premix oil oozing out of the pipe joints/silencer etc. 3 - Give the area around the plug a quick wipe to remove any debris. Which I'm sure will be leaner on the pilot and richer on the main. If the fuel in the bike is more than a few weeks old, get rid of it (burn it in your pickup), and get some fresh fuel from the gas station. If its happening randomly, I often suspect electrical. Feb 28, 2005 · Im not sure of the exact jet sizes, but my last ride i fouled 3 plugs in about 2 hours. To test your engine, you can get a you can get a compression tester (Amazon) to get an actual PSI number that will tell you what condition your top-end is in. Spark Plug, Iridium IX, Flat Seat, 14mm Thread, Reach, Resistor, Each. To gap a plug use a feeler guage. Bits of dust, dirt and other materials mustn't inside the weed eater's fuel compartment. Changing the premix ratio, going to a hotter spark plugs etc. That comes specifically from jetting, not oil ratio. I have twin 2001 150hp HPDI that have been fouling plugs at low rpm from *****ing for long periods of time. If it is ridden hard, i, "on the pipe" and the revs kept up while idling, then the plug seems to do. Check the entire system from plug cap to stator with a multimeter. it would bogg down and die, fouling the plug. (EG, EV) My bike will foul them when it is warming up. Use 16oz to one gallon of gas mixed in to a small 1gl tank. May 6, 2005 · hey dude. In this article, we're going to explore the causes and solutions for oil fouled spark plugs. Find 2018 YAMAHA YZ65 Spark Plugs and get Free Shipping on Orders Over $109 at Summit Racing! $20 Off $250 / $40 Off $500 / $80 Off $1,000 - Use Promo Code: CARCARE Spark Plug, Copper Core, Gasket Seat, 14mm Thread, 0 Reach, Resistor, Each. That can tell you what kind of fouling you're experiencing. Compression on the right cylinder is 170 & the plug looks great. Intro Table of Contents Yamaha Spark Plug Fitment Chart Manufacturer Model Standard Plug Iridium Plug Electrode Gap YAMAHA AEROX 100 (YQ100) NGK BR8HS NGK BR8HIX 0. I have seen this work before with a rider that … The 2024 Alfa Romeo Tonale has a starting sticker price of $45,440, with the range-topping Tonale Speciale kicking off at $50,435. 3L silverado with 49k recently fouled #1 cylinder plug for the second time in 3500 miles. The bike ran great for about a year then after a year of riding the bike started to bog so i changed the plug. ok so ill put a smaller pilot jet in the bike thanks. As engine warms, cylinder grows and valve lash changes, allowing valve to close, reseat and. Now, less than a 1000 miles later I'm having rough acceleration. The plugs foul with wet black gas at low cold and warm idle and low rpm. This excess of fuel that cannot be burned leaves the spark plug looking black and sooty and/or oily. 2-stroke engines are simple with very few moving parts but, ALL it's components must be within spec to run 'clean'. Edited June 26, 2022 by mlatour. Try a batch of gas premixed at 30:1. With a large inventory of vintage motorcycle parts and same day shipping in the continental US, we can assure that all your Yamaha YZ65 motorcycle needs will be met here. SmokinJoe. Sounds like the YZ65 is jetted for a WFO kind of rider. One problem I have encountered in the past is variation in fuel quality and old or stale fuel causing fouling. In tune, even at 32:1 it won't spooge / foul plugs. I've only fouled two plug on my '05 KTM 200 since I bought it new. I was using the maxima castor oil which is designed for full time high rpm's like motocross, not for trail riding where the rpm's are low most of the time. In the remainder of the season I put almost another 2000 flawless miles on it. A lean bog will: Sound and feel like the engine is dying. To it back to the local repair shop, "misfires #1 cylinder. 5 turns on volume screw, idle air screw in. Displaying parts for your 2023 YAMAHA YZ65. wooded land for sale near me Good fuel is a must, cheap fuel from 2nd rate brands is full of additives that foul plugs. I pulled the carb, cleaned it out, but can't tell what jets I should change, or if that is my issue. Aug 12, 2014 / Spark Plug Fouling Frequently - Kohler Courage SV590 - LT1042 Even with a new plug gapped to specs, engine starts missing in about 30 minutes and then under normal load shortly loses almost all power. While the powervalve may or may not be functioning correctly, it wont cause your fouling plugs. I was using a nkg iridium core DR8eix(I think) untouched it was gapped at. The fast-charging network for Ford owners will double with this deal Ford electric vehicle (EV) owners will soon be able to plug into Tesla’s vast EV fast charging network Microsoft is launching a new plug-ins framework that'll allow developers to build extensions for the company's AI 'copilots. That did not fix the issue but made it better. i live at elevation of average 600 feet above sea level. The oil burning combined with the misfires will destroy your catalytic converters (not cheap to replace!) over time. Apr 28, 2009 I have a 1996 YZ125 dirt bike and it keeps fouling plugs around 3 hours on the bike. 2005 Bayou 250 fouling plugs. Take up getherejunes offer of his DIY float height tool. Thoughts? less oil in the gas/oil premix equals more fuel, increasing the fuel/air ratio (richer) lowering combustion temps and making the engine even more prone to fouling. Estimated Ship Date: Apr 4, 2024 if ordered today. I was having the same problem on my grandson's '15 65 SX. It can be caused by a number of things. Your car coughs and jerks down the road after an amateur spark plug change--chances are you mixed up the spark plug wires. Flo Motorsports Stainless Steel Foot Pegs Yamaha 65cc-450cc 1999-2023. 2007 virago 250. Wall Street analysts expect NGK Spark Plug will release earnings per share of ¥58Watch N. The engine Did Only 41 hours. Fouled plugs are typically caused by jetting that is too rich. archangels and chakras Oil burning can cause oil fouling of the spark plugs, leading to misfires. Once set the pilot jet is not terribly sensitive. Fouling plugs. Then check pilot screw setting on carb; could be overly rich fuel mix. Gone through all electrical. I'm hateing to change the plug so much on the bike its driving me crazy. InvestorPlace - Stock Market News, Stock Advice & Trading Tips Since reporting third-quarter results on Nov. my dealer said i didnt need to buy jets. The YZ65 is the perfect first step into the victory zone. Edited April 10, 2020by mlatour. Spark Plug: BR9ECM; For reference only, please consult your owner's manual to confirm your fitment. (EG, EV) My bike will foul them when it is warming up. With the original 50 pilot jet I was fouling plugs every hour or so. IMO 40-50:1 if not jetted spot-on is more prone to run rich / foul as the extra fuel is overcooling the combustion process. The right plug would be clean, but the left plug would be coated with thick/hard carbon. Plugs generally foul from a fuel mixture that is too rich, a faulty ignition/electrical system component, or a worn out top end or seals. If the PCV valve is stuck open, the excess vapors and oil droplets can quickly foul the spark plugs. They actually look weird, the ring around the insulator will be perfectly clean but the insulator will be black and very. foreclosure houses for sale 50 each) and have never fouled a plug. So like suggested change your pilot and main to the yz250 settings. The spark plug heat range has no relationship to the electrical energy transferred through the spark plug. Consistent performance. Change or remove machine See stock sizes for this machine. That comes specifically from jetting, not oil ratio. I have turned it to both extremes and the plugs foul in both positions. are all band-aid cures for a bogging/fouling engine. If the fuel in the bike is more than a few weeks old, get rid of it (burn it in your pickup), and get some fresh fuel from the gas station. Two strokes are relatively sensitive when it comes to carburetion. This usually happens after I make a short run then stop and the motor. I don't know what would cause this. To find out if the plug is the cause, test it first (more on that later). Last Saturday though I ran out of gas on a trail. My new 2020 yz125x fouled a few plugs when I first got it. The rich air fuel mixture causes relatively cool and incomplete combustion. That jetting was the ProCircuit setting referenced in MXA on their 2023 YZ125 ProCircuit race bike. 98 USD for each individual spark plug. NGK Resistor Sparkplug BR9ECM for Yamaha YZ65 2018 Search this page See fitment guide image for additional Machines this item fits. Posted April 26, 2015 More oil = less fuel = leaner fuel air mixture. It was running a little rough and the plugs were fouling so I took it to my Kawasaki dealer and they adjusted a screw on the bottom of the carb and thought it would be fine. my 2021 yz125x right off the showroom floor has fouled 4 plugs already, i was using 40:1 yamahalube but tried switching to maxima formula k2 and it fouled another plug.
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The leaking wet seal can be diagnosed with a simple leak down test, and the jetting , well, stock settings are a good place to restore to, and then make initial adjustments based on altitude and weather 2 This can cause oil to be forced past the valve seals. 3 - Excessive Idling 5 - Engine Overheating. If the filter is not too bad, you might want to drop a size on your pilot or main. Lunati Voodoo 268 cam. Me and my brother both got new 22 yz125 and ride on the trails/enduro but the plugs keep on fouling every half hour. The first plug i fouled i discovered oil seeping out of the spark plug hole. Went to pick them up to find the kit only included one length of plug wire, long enough to make 1 wire, at a cost of $40. So curious on thoughts on this I replaced flywheel on the bike and since that now I'm fouling plugs real quick to the point it won't start, then I change plug and starts right up but will foul the plug after just a short time, the plug is not wet but is black. Plug of choice in millions of vehicles. Always gap a new plug. Gone through all electrical. It can be caused by a number of things. Symptoms of Worn-Out and Fouled Spark Plugs. Posted July 14, 2020. All were hit with Carb Cleaner, torched put to use in XS650 motors with no issues. 98 USD for each individual spark plug. military funny pictures (black powdery residue, not oily residue. Cold plug, slow … Fouling plugs was not an issue with the stock jetting, but we did manage to get adjust the jetting specs for a cleaner delivery as Landon got used to the the machine. i use silkolene 50 to 1. A failed turbocharger can be another source of spark plug oil fouling. By examining the insulator firing nose color, an experienced engine tuner can determine a great deal about the engine’s overall operating condition. A new reversible USB plug is likely to hit the market next year. me too i had the same problem. Now, less than a 1000 miles later I'm having rough acceleration. Nine times out of ten fouling spark plugs is caused by rich jetting or a leaking wet seal. I bought my 18 XRS 850 mid-season last year with 2000 miles on it. PC pipe and silencer. I have twin 2001 150hp HPDI that have been fouling plugs at low rpm from *****ing for long periods of time. A new reversible USB plug is likely to hit the market next year. I cleaned the air filter and oiled it, I took apart the carb, I adjusted my air screw, the last thing I. Replaced the plugs and the rear fouled within 15 minutes of running. Feb 23, 2002 · Check the spark plug boot. I have my clip in the 2nd leanest position and the air/fuel screw totally turned out. I just recently purchased a brand new Yamaha yz 250 about 4 weeks ago. 1741 posts · Joined 2007 Just like last year's 2019's--except maybe worse--BOTH my 2020 Assault and SKS 850's are fouling plugs during warm up. I need help! I bought a 2022 yz125x a few months ago, and now have 16 hours on it already, riding in slow single track, as well as wide open in fields. ring with x Last fall, I had a spout of rough running and ended up changing the spark plugs and wires. Failing main seals can be sign of just old or worn out seals, or your main bearings starting to go. Yamaha 2019 YZ65 Plug - OEM Spark Plug - Dirtbikeplug Free shipping to the U lower 48 states. Plug of choice in millions of vehicles. Oct 10, 2009 Winterized my Sportster today. Sep 3, 2011 · 2) plug quality. I have had this bike for a little over a year now and have fouled around 5 spark plugs. Finally got a call from the parts dealer the assenmbly was in. The bike ran great for about a year then after a year of riding the bike started to bog so i changed the plug. Dirt Bike Mods & Maintenance Thread starter Arven; Start date Jun 30, 2004 If its darker and has glazed, the plug is a paper weight unless you have a sand blaster. Generally speaking if you depart with a fouled plug and it is causing a rough running issue you should cycle the magnetos untill you are running on the good set of plugs and get the plane down safely. Fouled them out today at about 30 miles. 1. Google is winding down Stadia, 2. Even with jetting a little off the 4 strokers can usually keep the plugs alive. 984 posts · Joined 2012. As the oil seeps into the chamber, it coats the spark plug, hindering its ability to generate the required spark for ignition. Today, I ran across this post: YZ250X fouling plugs and float level adjustment The issues that [mention=225973]Doc_speeder [/mention] was having with his bike sound VERY similar to mine. Put a car spark plug in it so it would burn hotter. I've got it all together and running, my only problems are the float in the carb seems to be sticking some of the time and I'm fouling plugs left and right! It will start and idle for a few seconds then bog down and die Lead Fouling. Premix ratio isn't the problem, don't change it. The other is make sure you have the correct air filter. wired spy camera with audio Bought from the same dealership at the same time. 3, You might have a piston ring failure. S. Here's a quick way to tell: A rich bog will: Sputter and hesitate. To it back to the local repair shop, "misfires #1 cylinder. In a nushell the cooling effect of a rich jetting condition causes the spark plug tip to fall out of the optimum 500c-850c and the result is fouling. Page 1 OWNER'S MANUAL YZ65 MOTORCYCLE Read this manual carefully before oper- ating this vehicle. Dirt Bike Mods & Maintenance Thread starter Arven; Start date Jun 30, 2004 If its darker and has glazed, the plug is a paper weight unless you have a sand blaster. Fits your 2022 Yamaha YZ65. Engine freeze plugs exist on the typical automobile engine as a result of casting holes in the block or head. Then there are oils like 927. I bought my 2005 Kawasaki bayou in July of 05. Edited June 26, 2022 by mlatour. Change or remove machine See stock sizes for this machine. Oil on spark plugs, also called oil fouling, is commonly caused by failing valve stem guides and bad stem seals. Both worn-out and fouled spark plugs show the following symptoms: Engine misfires: An engine will misfire when worn-out spark plugs delay the combustion timing. Oil usually gets on the spark plugs because of a leaking valve cover gasket or a clogged PCV valve. All sorts of things affect the richness/leanness of your air-fuel mixture resulting in plug fouling. #7 · Nov 16, 2016 (Edited) mofest. I have tried to adjust the mixture knob on the carb with no luck. Around 8 hours on it Needle - 4th clip on red needle Yamalube 2r mixed 32:1 with 91 octane gas.
However it still puts out spooge on the end of the pipe. I just recently purchased a brand new Yamaha yz 250 about 4 weeks ago. What to watch for today Can Chinese stocks sustain their rebound? The Shanghai Composite Index rose 5. Take up getherejunes offer of his DIY float height tool. Make sure the float isnt set incorrectly too high and or jetting too rich. all ages mobile home park near me My old 97 CR80 would start fouling plugs when the top end started getting tired. Designed with precision and attention to detail, this bike is built to withstand the demands of motocross and deliver a thrilling riding experience. Then there are oils like 927. Most likely cause is running too rich. Then check pilot screw setting on carb; could be overly rich fuel mix. I've put Seafoam down the left plug hole. ideas for covering a wall I bought my 18 XRS 850 mid-season last year with 2000 miles on it. The valve seals do not seal properly and the oil comes down inside of the cylinder and ignites. Me and my brother both got new 22 yz125 and ride on the trails/enduro but the plugs keep on fouling every half hour. The injectors throw more fuel in when the bike is first starting and sometimes this causes the plug to foul. ojos locos austin The jetting is weird on this bike. are all band-aid cures for a bogging/fouling engine. More throttle responce, more get up. I have a 97' YZ 250. All factory 2 strokes no matter what colour has rich jetting. A spark plug becomes fouled when deposits, such as carbon or oil residue, accumulate on its surface How does a fouled spark plug affect engine performance? A fouled spark plug can cause misfires, rough idling, decreased fuel efficiency, and even difficulty starting the engine Can I clean a fouled spark plug instead of replacing it? The fouling of carbon on one spark plug can cause issues like bad gas mileage, engine stalling, rough idling, and vibration. Aug 22, 2016 · With the original 50 pilot jet I was fouling plugs every hour or so. You should probably drop the pilot … Yamaha 2022 YZ65 Plugs can foul or lose strength over time, to fix a hard starting dirt bike It’s smart to start by replacing the dirt bike spark plug, and with two strokes it’s good to … View and Download Yamaha YZ65 owner's manual online. The Yamaha YZ65 (2022) is a motorcycle that offers reliable performance for riders looking to navigate off-road tracks.
Check the battery: If the motorcycle has an electric starter, check the battery. We run 30:1 Yamaha 2R oil but bikes continued to foul the plugs. Oil Contamination: A fouled spark plug is often caused by a malfunctioning component, such as a worn gasket or faulty piston ring, which allows oil to leak into the combustion chamber. richer = lower combustion temps = more prone to fouling. At the end of the day, as we were packing … 4. Once the plug is gone and the bike wont start anymore I can smell fuel pretty s. I have never been able to clean a fouled plug and have it work for any decent length of time. Despite my earlier claim of success I found I was still running into a problem of fouling plugs even after the air filter issue. Check the spark plug boot. Pivot Works Fork Rebuild Kit Yamaha YZ65 / YZ85 2004-2024 $ 86 Free Shipping Fits your 2022 Yamaha YZ65. Bought bike off a good friend who really never had this issue Need some help. com that someone switched spark plugs to a higher temp rated plug from the stock plug. Anybody having issue with running way to rich fouling spark plugs? Spark plugs on back order Okay, so to start I got the bike on craigslist, rode it and the crankcase filled with gas and slung the rod out the crank case. I've taken it out for a few rides this spring, and all of a sudden I'm fouling plugs. This is an issue I've never had a problem with. The first plug i fouled i discovered oil seeping out of the spark plug hole. Displaying parts for your 2023 YAMAHA YZ65. Tighten them both securely with your socket wrench to complete the installation process. This causes accumulation of sooty deposits on the plug eventually resulting in fouling. craigslist mn dating This could also be from a dirty air filter which can make the bike run rich. I run premium gas with Castor racing pre-mix. I was at first thinking may. 2018 to current off-road, offroad, mx, dirt bike, motocross, Supercross, kids mx, kids dirt bike, oil servi. If you are the only one using the tractor, might try running the oil about a quart low. !!! He was fouling 1 or 2 plugs per ride. Wrong spark plug: Your spark plugs may be the wrong spec, type, or heat range for your KTM 65. Edited June 26, 2022 by mlatour. Bad set timing might cause plug fouling. Same thing can happen to a four stroke it's just not as common. Took it to the dealer since still under warranty and they said it was from an old style valve cover? Burnt 1, Fouled plugs can be caused by three things: too much oil in fuel, too much fuel in the cylinder, or wrong plug/gap. You may want to try a 58 or 60 pilot given you're a little higher elevation mostly. It would leak from just using the kickstand on level ground. Front Sprocket: 14 Tooth. My old 97 CR80 would start fouling plugs when the top end started getting tired. It's getting downright embarrasing!! The symptoms are limited to starting problems. They are typically found on the top of the engine, near the center Remove the ignition coil or ignition cable boot from the spark plug. Replaced the plugs and the rear fouled within 15 minutes of running. For more info and a tutorial on how to check engine compression click here. 2000 yz125 keeps on fouling out plugs 2000 yz125 keeps on fouling out plugs just had carb reworked. So like suggested change your pilot and main to the yz250 settings. This bike has never been out of the garage after it was in the shop. You should probably drop the pilot … Yamaha 2022 YZ65 Plugs can foul or lose strength over time, to fix a hard starting dirt bike It’s smart to start by replacing the dirt bike spark plug, and with two strokes it’s good to … View and Download Yamaha YZ65 owner's manual online. cna practice test illinois Posted August 8, 2021. 4) Fouled plug Pull the spark plug and see what it reads. Posted May 22, 2016. Most likely cause is running too rich. I've been mixing 50:1 with Yamalube but recently switch to amsoil dominator and it seems to foul pl. General 4x4 Forums. Feb 23, 2002 · Check the spark plug boot. Front Sprocket: 14 Tooth. Yamaha 2023 YZ65 Plugs can foul or lose strength over time, to fix a hard starting dirt bike It’s smart to start by replacing the dirt bike spark plug, and with two strokes it’s good to have a spare! DirtBikePlug. The bike is all stock, air filter was pretty clean, and ive only fouled one plug previously to this day. Honda paid for the one spark plug that was fouled (p0303). 5 x1000, when I test rode it the belt was slipping and the owner who I know let me know this, it was down on power an I thought it was just belt slip, I have since put an ome belt on. 98 USD for each individual spark plug. Me and my brother both got new 22 yz125 and ride on the trails/enduro but the plugs keep on fouling every half hour. Since then i have fouled 4 plugs and have tried everything to figure out why. I'm running yamalube 2r with 93 pump gas.