While at idle the alternator only makes about 40-50 watts. Symptoms of a faulty stator may include: No start Ignition failure causes: 1) Bad stator source coil, which is a very common fault. Meaning if the bike won't start it's bad, and if the bike will start, it's as good as it's going to get (unless there is some sort of intermittent problem. The stator should generate enough power to not only operate all of the electronic functions of the bike, but there should also be enough of a surplus to charge the battery that has been drained a bit from starting the bike. Your idle will hang and/or the bike ⦠I pulled the plug and it shows spark outside of the motor when I kick it. Check for bad connections ⦠I then pulled the stator cover off and there was nothing visually wrong with the stator that I could tell. I had plenty of power, in fact, opening the throttle made the surging disappear. It goes from 12.67-13Volts at idle then down to 12.20v-12.40v when the fan turns onâso today i will be checking resistance on the Rectifier âi will test the voltage coming out of the stator and the diodes on the rectifierâwill keep you posted It might be also valid for other brands. Carburetors are relatively simple devices. I have an 02 bandit 1200 with 21,000 miles. For tight valve clearance, there are many symptoms on a dirt bike that show a clear indication of the adjustment of the valve. However, here are a few symptoms of a bad radiator cap. This solution completely bypasses the stator by using a 12 volt battery to power the ignition system. The bike is getting fuel, I can smell it when I kick it over and I dumped some in the air filter just to make sure and got no response from the motor. On 2 stroke dirt bikes, there is a rubber seal on either side of the crankshaft. Plug you cdi in another bike. My question is, it's now throwing a F1 light. #01.Coolant leaking. is this a computer problem or a stator problem? Without a good stator, your engine will run poorly or not at all. Everything sounds good, no whining noise from the stator, bike started up first try like nothing had happened. If the voltage drops below approximately 13 volts, the motorcycle will begin to drain the battery and eventually the engine will stop. none of the lights work. Current status of bike: original stator deemed to be in good condition and working. Bad Fuel Pump Symptoms on a Dirt Bike or ATV. Lights on, the stock bike uses about 120 watts. Just trying to figure if I have problems with the way my bike is running, if the stator could be part of the running problem. The 550 alternator, even when new, didn't make more power at idle than the bike uses, especially with the headlight on. Rebuild Your Bike's Expensive Stator: Here is how I've rebuilt the stator of my bike, a Yamaha yp250 scooter, branded here in Italy as Majesty 250. Dirtbike Forums > Dirt Bike - ATV - Suspension Forums > 2-Stroke Dirt Bike Forums > 2-Stroke Dirt Bikes ... but pretty sure CDI's are either good or bad, nothing in between. In some models of bikes, Yamaha for example, the cdi or tci is repairable. If you buy a 2-stroke dirt bike with a lot of hours or you ride a lot every month, chances are it will need the top-end replaced sooner rather than later. Some of the major causes are condensation of atmospheric pressure, the poorly sealed cap on tankâs top, and the bad top fuel pump. On most 2 stroke dirt bikes, there's a plastic cover on the left side covering the flywheel and ignition system and this cover, (if still the OEM plastic unit) is frequently distorted and allowing water, dirt, sand and grit into this area during rides or while washing the dirt bike. I cleaned out the carbs did a holeshot stage 1 jet kit. there is no battery in it it works totally off of the stator. Find Wiseco clutch components for your bike or ATV here. Valve adjustment is a regular activity that needed to be done. Signs of Engine Overheating On a Dirt Bike or ATV By: AndrewT June 01, 2018 In the midst of battle or just bar-banging fun on the trails you can easily miss or even ignore the mounting symptoms that indicate an overheated engine on your dirt bike or ATV. Bike: 2013 KTM 990 Baja Mileage: 26,000 Battery type: OEM Yuasa Symptoms: A couple months ago, the bike was beginning to get harder to start. i disconnected the wrong wire on my wr250f. Sometimes, a bad CDI does not cause sparks at all. Solving water in gas tank symptoms. Wont let me upload pictures,becuse photo is too large.Any one with knowledge ,of being able to examine one and know its bad please respond and I can email you pictures to check.Im not gettting a spark at all,but need to know for sure if its cdi box or stator,i dnt wanna guess. If the seal on this side goes bad, youâll get air leaks. Signs & Symptoms Of A Bad Stator. If your stator is bad, the battery of your ATV will not charge while the ATV is running. The stench might be so pungent that itâs evident after pulling into the pits. Have you tested the coil? now it wont start at all. I started it up with the airbox removed. It might not even hold low revs at all. Sign #2: Creeping & Bad Smell. CATEGORY: DIRT BIKE TECHNICAL ISSUE DETAILS The stator on these RM125 models consists of a plate with a pickup coil and a 6-pole stator on which ONLY TWO poles are wound as a source coil providing power for the CDI. But sometimes these systems go bad. A bad stator can have all kinds of funny, hard to trace symptoms. An ATV will not start with a bad stator, the engine requires electrical current from the stator to power the coil and fire the spark plug. Over time these dry out. ... A bad stator can also give the same problems too. If the radiator cap is stuck, the proper amount of coolant cannot be released appropriately and this causes coolant temperature and coolant pressure increasing. Bad Stator Fix--Don't Buy a New Stator for Your Engine! Checking the voltage with a voltmeter versus relying on symptoms alone will prove highly beneficial. In this post weâll look at the top 5 signs and symptoms that your 2 stroke dirt bike may need a top-end rebuild. How to adjust the valve of a dirt bike to enhance the performance is a necessary phase to understand for all riders. You may be able to get your bike started with a bad stator, but it wonât be able to charge and power the electrical system and/or battery. While cruising at speeds about, say, 60 mph up to 90, I felt what I thought was a chronic and intermittent surge. The CDI is not easy to diagnose because the observable symptoms of a faulty CDI box can lead to different directions. Stator Is Bad. Generally, motorcycles feature a three-component system containing three wires that link the stator to the regulator rectifier. the headlight began to put off rainbow colors and then the bike died. I noticed it cranking a little slower and taking 2 or 3 hits of the starter to turn the bike over, which is unusual ⦠How To Test A Dirt Bike Stator A balanced and good compression is between 150 and 160 PSI. The problem may get worse as the bike warms up. Weâd recommend reading this article here on How Outboards Charge The Boats Batteries By Either A Stator or An Alternator. It had been running just fine until one day it started acting if it was running out of gas anytime the throttle was turned from 1/2-full throttle(it would still rev). Again, when a CDI box is about to go bad, it can lead to misfires, issues with starting, rough running or even stall the motor. All in all, while driving if you experience revving or sputtering and delayed acceleration, this clearly point towards the water in gas symptoms. This bike has the Honda V-4 with injection and it's in generally good condition. Have you tested the stator? Source: HotCars. Their primary function is to deliver the right amount of fuel/air mixture at a given throttle opening (as selected by the rider). This can be caused by several other problems, however, so the only way to be sure that your stator has gone bad is to perform a series of tests using a multimeter. It will run good for about 10 or 15 minutes, but once it warms up, it won't idle properly, will start struggling and die. Luckily there are telltale symptoms that will tell you which problem you're dealing with. Hi all, I have an 82 Suzuki GS750T, and haven't gotten it running well yet. If we talk about an 85cc two stroke dirt bike then it should have a minimum compression of 130 PSI to run at a right efficiency and give out better performance. I checked the 3 pin stator output connector and get 20 to 25-30 volts AC depending on RPM across any two of the three pins - I also have .2-.3 ohms between any two of the three pins and .2 to .3 ohms from any of the three pins to ground and no bad smell from the engine oil..... so I think my stator ⦠Check the resistance of the stock stator. There are some ways you can test if your bikes stator is functioning as it should. Create a Battery-op Ignition System for Less Than $50: The cost of a new stator can be hundreds of dollars. Some bikes have single-phase designs because they cost less to manufacture, in which case there would be two wires rather than three. Elsewhere, fuel pumps need power to run and use a capacitor. If the stator fails, then you wonât be charging your boatâs batteries while you are running! 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