Full Suspension Mountain Bike Men
Experienced athletes share their insights in answering this question:
Hi mate disconnect the cut out switch and try kicking it over if still no spark check connections are pushed together propally there buggers sometimes and push the plug to the cdi in also consider replacing spark plug and try the coil on a different bike and see if it works goood luck
How to Identify and Resolve Common Issues ?
We offer a diverse range of insights on identifying and resolving common problems in sports. Our sources encompass academic articles, blog posts, and personal essays shared by seasoned athletes. :
If you are having a no-spark problem, a good place to start after ruling out shorts, grounds, switches and spark plugs, is the ignition coil, spark plug caps and wires. The plug wire runs from the ignition coil to the plug cap. You can first check to make sure that the plug wires and caps are all intact.
Clogged Fuel Injectors
If the car cranks when you turn the key, but the engine won`t start, it could be because fuel isn`t getting to the engine. One potential reason for this could be dirty fuel injectors. Over time, the fuel injector nozzles can become clogged with rust, corrosion or debris.
If you see a good spark at the coil, but not at the spark plug, then the problem may be caused by either a bad distributor cap, rotor, or carbon point and/or spring, or plug wires. Look down in the spark plug tube. If you see the spark going to the tube, the boot is bad.
The short answer is, the CDI box controls your motorcycle`s ignition system—arguably one of the most essential systems on the bike. After all, if it doesn`t start correctly, your bike isn`t going anywhere.
Spark issues are the most common symptoms of failing stators, known as “Misfiring.” If you haven`t already known, stators are directly responsible for producing the required spark for your spark plug. Once they malfunction, the motorbike will receive insufficient – or worse, zero – sparks.
If you do not see a spark, there is an ignition problem. Remove a plug wire and insert an old spark plug or a spark plug tester into the end of the wire (the plug boot). Place the spark plug on a metal surface on the engine, or ground the spark plug tester to the engine. Then crank the engine to check for a spark.
If the ignition relay shorts, burns out, or otherwise fails while the engine is operating it will cut off power to the fuel pump and ignition system. This will cause the vehicle to immediately stall due to fuel and spark being cut off.
If the spark is a big fat one, then the condenser is bad and needs to be replaced. 2. If no spark is visible, check to see if the points or wires are shorting to ground either at the points or at the primary terminal screw going through the housing.
If your engine is not sparking, it may be due to a problem with the CDI box. However, other potential causes of no spark include issues with the ignition coil, spark plug, or wiring.
A failed crankshaft positioning sensor can cause your engine tp have no spark. In most modern ICE engines they all use electronic ignition and engine management systems. Theses systems depend on the signal sent from the crankshaft position sensor to determine what cylinder is coming up on top dead center (TDC).
Without stators, the bike will receive very weak spark – since the battery cannot supply the appropriate power amount to the engine. No energy, no current; your bike will be a dead course.
Place the black multimeter lead on one of the terminals on the CDI box. Touch the red multimeter lead to each of the other terminals on the CDI box, one at a time. If the multimeter reading changes when you touch the red lead to different terminals, then the CDI box is functioning properly.
In many cases a new stator is the safest, most cost-effective solution for an electrical system breakdown. Because repairing stators can be an intricate and detail-intensive process, replacing failed stators with an entirely new part can be a much easier route, depending on the specific motorcycle.
When a stator fails, it is largely due to the degradation or aging of its insulation through external occurrences and materials being introduced into its system.
A bad rectifier ( inside the alternator) can short out one winding group of the stator, hence it will burn out.
The most common reasons a Chevrolet Spark won`t start are a dead battery, an alternator problem, or failed starter.
Ignition timing fully under the control of the engine management system with spark timing determined by the throttle position, engine speed, knock sensor, engine temperature, and manifold vacuum.
When couples say they no longer feel a “spark,” it may mean that they`re missing the initial feeling of infatuation or that long-term commitment has become challenging. Meeting your partner and falling in love may have felt exciting, new, and intense. You might have felt that it was the only factor in your life.
stalling: a failing ignition module can occasionally prevent the engine from getting spark, causing it to stall. 4. car won`t start: an engine needs four basic things to run: fuel,compression, spark and exhaust. if the ignition module has failed completely, the vehicle won`t get spark and won`t start.
A failing points and condenser system can cause rough running, misfires, lean and rich conditions. If the engine is difficult to start, and runs rough once it does start, then it is time to contact a mechanic to have a look at the system and find out exactly what the problem is.
With a dirty or blocked condenser, even the subcooled liquid temperature coming out of the condenser will be at a higher temperature. This means that the liquid temperature out of the condenser will be further from the evaporating temperature.
As the vehicle is driven, the PCM processes data inputs from all of the engine`s sensors to adjust actuator outputs like air/fuel mixture ratio, spark advance and idle speed. At that point, the oxygen or air/fuel ratio (AFR) sensors are used to trim air/fuel ratios to the desired values.
To test your CDI box, you disconnect it from your bike, use the positive and negative leads of your multimeter to check for continuity, and listen for a beeping sound which signals that it is faulty.
Vibrations can damage ignition coil windings and insulation causing shorts or breaks in the secondary windings. The overheating of ignition coils can hinder their ability to conduct electricity. Wear and tear is a common reason for ignition coils failing.
Discover Relevant Questions and Answers for Your Specific Issue
the most relevant questions and answers related to your specific issue
No spark we have rebuild the bottom end and now have no spark bike was running before we rebuilt it
ANSWER : Hi mate disconnect the cut out switch and try kicking it over if still no spark check connections are pushed together propally there buggers sometimes and push the plug to the cdi in also consider replacing spark plug and try the coil on a different bike and see if it works goood luck
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I have a 99 yamaha f100 four stroke outboard. Problem I have is boat will acclereate fine get up on plane and after running for about a mob at wot will decell and only run around 4500 rpm. Then after coming back to idle will have a slight miss then run smooth and repeat every run. Changed the plugs and fuel filters alll oe yamaha has fresh oil timing belt is good any ideas will help or fuel psi spec. I am an ase master automotive tech so I know alot about engs. To me it feels like it’s running out of gas. Like the carb bows are full when I take off but then runs out after running wot. Any info will help
ANSWER : I have exactly the same problem with my Yamaha F100, have you got any solutions yet?
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1988 Yamaha 4 wheeler slow crank
ANSWER : Put jumper cables from battery to starter directlyto see if it turns over faster put red on starter lead and black on gorund(metal housing)You may want to try this from a car battery to see if it spins faster if it does it indicates a problem with power from new battery check cables and lines for power blead
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2008 Yamaha vx deluxe will only run about 30 mph
ANSWER : If the motor is reaching full revs look at the jet assemby for fouling or prop damage. If it is not reaching full revs get authorised mechanic to fix it, it will be cheaper in the long run.
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Spark plug wire boot grounding out on coil, 96 outback 2.5 automatic, just put new spark plug wires, new spark plugs, and new coil on. ran great for two weeks, now spark is jumping out of boot at coil on one wire, put old coil back on and still does it in the same spot. replaced wires again, and still does it in the same spot. seems to do it only under a load. Is my new spark plug on that cylinder bad? Does the coil need some insulation under it? It is the coil that sits right on top of the motor. Any ideas? thanks.
ANSWER : Sparks are high voltage, and will always follow the path of least resistance. If you can visibly see a spark (whether in a lighted area, or in the dark), that means either that a plug wire (or coil wire) is open (non conductive), or your have a carbon track on the surface where the spark can be seen, but most likely you have BOTH problems!
If you have an ohmmeter, check the resistance of each wire involved, particularly spark plug wires … which means you must be able to connect to both ends of each wire at the same, and hopefully, FLEX those wires, to be sure they don’t have a break inside that is intermittent (comes and goes)!
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1996 bayou runs for short time ,keeps stalling out
ANSWER : Hello, I would start first, make sure ex pipe is open . Then I would check the pick up coil, ohms should be 390-590 on a 300 KLF. Do this test before u start the bike Then start the bike and when it quits running check the pick up coil ohms. If good move on to the coil, If good then I would say good chance CDI is bad I hope this helps
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Turned poulan pro 42 inch 18.5 HP Briggs and Stratton mower off after 1hr of use to move a board I was about to mow over. Tried to restart it but it just backfires. Removed spark plug and it looked fouled. Cleaned it up but when looking at spark it is orange in color. Bought new spark plug and now get white spark. Installed new spark plug and it still backfires. Plug is wet with gas. Any suggestions?
ANSWER : Check the valve clearances and especially the inlet valve to make sure that it is not riding (staying slightly open) B&S are notorious for valve problems as most of their motors do not have a valve adjustment on them, the valves stems have to be filed/ground down to get a clearance. Somewhere between 0.010 to 0.015″ is near enough for the inlets and about 0.005″ more for the exhaust. It is not critical.
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