I developed a … Think of it like the bass player in a band; you can obviously tell they’re off because the rest of the music doesn’t sound right. How do I reset my GE refrigerator control board? Here are some basic symptoms, some duplicate. Here are some common symptoms that hint towards having failing points and condenser: 1. Most motorcycle engine blocks are aluminum, so when you thread a steal spark plug into an engine block the two metals want to seize together because they’re different from each other. Spark plugs are an easy and cheap fix and can be done within an hour. Ideal conditions can't last very long. The condensers last around 20,000 miles, so they do need to be replaced from time to time as a normal service item. Replacing spark plugs is a simple... Twenty miles west of Yellowstone National Park you will find a place called Island Park, which attracts thousands of tourists and outdoorsmen annually. I'm having trouble starting my bike, when I checked the spark it was weak and yellow, The battery seems fine when I checked it, I have electronic ignition and a new Bosch coil. Now you can thread in all of your new spark plugs into the engine with your socket wrench. The gas that does get inserted burns much hotter because there’s more air than there should be. If it doesn’t arc and give off electricity at the right time, the gas it’s supposed to mix with isn’t where it should be and combustion is then thrown off. Forums > XJ Motorcycle Forums > XJ Technical Chat > Hello Guest. Make sure to check the gap once you close it a little to ensure it’s at the right gap distance. We use cookies to give you the best possible experience on our website. Primary resistance should be less than 1 ohm, about 0.38 ohms and 0.78 ohms. I’ve been able to learn a thing or two about them through my experience as a motorcyclist and can report what I’ve learned. 5. since both plugs get the same fire from the same coil, if you have a weak spark on one and a good spark on the other, the most likely cause is a bad spark plug or plug wire on the cylinder with the weak spark. Then, see if you get better results. Incorrect amounts of air or fuel will cause the engine to run poorly, as will a weak spark. After replacing with NGK end caps and resisitive plugs I'm still getting a weak spark. Im wondering if that could make me lose spark and cause the bike to miss. Misfiring is caused by the spark plug not arcing at the tip at the right time. This site is owned and operated by Cannon Entities LLC. It definately seemed to be a fueling problem at first, but since I changed the main and pilot jet and that seemed to cure 65-70% of the problem I was pretty sure I was going in the right direction. If your gas is detonating too early or too late inside the combustion chamber of the engine, all of that back pressure is going to build up on the spark plug since the pressure doesn’t have anywhere else to go. Sometimes condensation can build up in there and shoot out when the motorcycle is first started. An intermittent spark is when the spark plug usually fires just fine most of the time, but every once in a while it just won’t spark and your engine will backfire. gunbunny; Scooter; Posts: 80; Karma: 0; Cause of weak spark. If the spark is weak or non-existent, check the battery of your bike or change your plugs. The first common sign that your motorcycle spark plugs are going bad is if your motorcycle is misfiring. The bike wouldn't run and I found that the spark was very weak, barely visible. Click here to see my article about what to do when your motorcycle engine floods. If the spark plug is bad and isn’t giving a spark at the right time, left over gas in the combustion chamber gets sucked into the engine, doesn’t combust, gets past the exhaust valve, and shoots out the exhaust pipe. damage to the coil could also cause this problem, but if you don't see any cracks or evidence of physical damage, I would replace the plugs and wires. This means the carburetor or fuel injector is not inserting enough gas inside the combustion chamber. Magneto damaged. How to Title a Motorcycle Without Title Can You Register a Motorcycle Without a License? symptoms. You have limited privileges and you can't "SEARCH" the forums. Your engine is a fine-tuned machine, and performance, fuel economy, and reliability are dependent on consistent delivery of air, fuel, and spark. The bigger the engine your motorcycle has, the more likely you’ll run into spark plug issues because you’re dealing with more of them. Come join the discussion about performance, modifications, troubleshooting, maintenance, off-road, touring, street bikes, and more! Sooty or black spark plugs; Sooty or black muffler end pipes; Strong smell of gasoline when the machine is at idle; Uneven running (will often slow from regular idle rpms and then stop) What is the deformation caused by stress? If your engine won't turn over then this could be a result of the spark plugs. The starter relay in a motorcycle enables power to flow from the battery to the motor when you start your motorcycle. Weak Spark. Diagnosing motorcycle carburetor problems is relatively easy, thanks to three telltale symptoms. Backfiring is when you hear random loud pops coming out of the exhaust. What you are left with is a weaker spark at the plug gap, which makes it more difficult to start the engine. Symptoms There are special sockets out there that have rubber gaskets inside, so when you finish unthreading the spark plug the socket will be able to pull it out for you. The COIL can give weak spark in spite of the spark being triggered by a CDI box. The next thing you’ll need to do is remove all the spark plug boots off of the spark plugs. When the mixture is lean, the flame cannot expand across the cylinder bore since it requires both fuel and oxygen to accomplish this. Recommendations: Make sure the plug has the correct heat range. So you see I need the help of an expert, because I'm not up to par on motorcycle electrical and ignition systems. The severity of the symptoms vary according to which of the ignition coils are failing. There's a spark, and it's mostly blue, but it isn't a very healthy FAT spark. The signs of bad motorcycle spark plugs include your motorcycle misfiring, backfiring, or frequently having a flooded engine. 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