rich spark plug

Increasing the amount of air is usually an easy thing as we can simply apply a racing air filter, or modifiy the stock air box to allow for a better air flow. Peace, Daniel! First things first: Have you changed your air filter lately? Spark plugs can be the “canary in the coal mine” for underlying engine issues. vice versa. Btw, the iridium spark plug will ensure better performance than standard spark plugs? But, if the spark plugs are faulty then you will have incomplete fuel burning. JavaScript is disabled. Suggest you shove your head back up your arse where it belongs. Spark Plug – How Do I Read My Spark Plug Condition – What They Tell You 1. According to NGK Spark Plugs, when the insulator nose of the spark plug is coated, it is considered fouled. Keeping strickly to plugs. How the Spark Plug Works . As a result, the spark plug is functioning optimally. If the spark plugs have a matte black or grey appearance, it could be carbon fouling — something typically caused by a fuel mixture that is too rich. The spark plug should be replaced. Hope this gets my point over a bit better! As I said in another post, Adrian Wuillemin has a new fast acting Uego O2 meter, which will tell you the exact mixtures after a short drive. Running a tuned scooter requires attention to details. This plug eventually fouled and the bike would not start. This is done … you got your spark plug reading all wrong. I used the guide from your previous post about carb main jet settings , 34×5=170 … Still feels flat needle setting on the top clip , idle is also rich 50 pilot … My 1st thought is the main jet being rich is causing low end issues do you have a guide to doing idle jet aswell , I’ve turned the mixture screw all the way in and engine is still on does this mean main jet is too big or am I wrong, Also I got a guide with the carb when I bought it and the settings they have give are, 42 slow jet 142 main jet Jet needle setting 3 The carb is a pwk34mm flatslide power jet but I’ve blocked it off. It may not display this or other websites correctly. Fire requires three components: oxygen (O2), fuel, and heat.In your engine, every time a cylinder pulls an intake stroke, it pulls in air (≈21% O2).Port-injection engines inject fuel during the intake stroke, while direct-injection engines, gasoline or diesel, might wait until the compression stroke. Also remember that air tends to get denser at sea level. We've listed the standard plug replacement and the iridium upgrade. Get involved in the comments, or post to the forum to make this page more fun for everyone. Hi Rider, The manufacturers always try to sell their products at a higher price :) Whilst it is probably true that you see a performance difference in an F1 engine, it is unlikely that there is any measurable or neven noticable difference on a scooter engine :) For how long did you ride the new plug? Pretty sure your plug labels are incorrect; the rich one is right but the lean and optimal should be swapped round… a lean mixture increases the heat of combustion and tends to glaze the ceramic of the spark plug and burn off any deposits that may have accumulated, leading to the very white, clean insulator on the right of the picture. I ride the new spark for 5kms and now its chocolate brown, how good it is? We use cookies to ensure that we give you the best experience on our website. Se excluye cualquier tipo de responsabilidad por parte del fabricante por los daños que resultaren de modificaciones arbitrarias realizadas sobre el aparato. A rich mixture will not cause the engine to overheat, but a weak mixture will, so when adjusting the air screw use very small increments, and check the spark plug color between each adjustment. Welcome to our Triumph spark plug finder. You are using an out of date browser. http://www.pedparts.co.uk/blog/introduction-to-moped-jetting#moped-plug-chop, How To Quickly Determine The (Dell’Orto) Carburetor Main Jet Size, How to check if your Scooter CDI is restricted, The Ultimate Scooter Tuning Exhaust Test (70cc Sport), 50cc Scooter Tuning Guide or "What exhaust…. During normal combustion, most of the fuel oxidizes and changes into carbon dioxide and carbon monoxide gas. There should be no spillage of oil and petrol from the exhaust and the engine should basically perform as new. If your setting is too lean you will notice a whiteish texture on the tip of the plug. Low-octane, as well as high-octane gasoline fuels in a rich mixture leave carbon compound deposits on the spark plug porcelain. The basic construction of a spark plug uses an upper contact tip that receives voltage from the ignition system through a spark plug wire. Grease, sludge, and other junk may have caused the plug to stick in place, especially if it’s been a long time since it was changed. In the optimal setting the spark plug tip will be slightly wet but clean. The left plug looks to be optimal with a grey brown colour from the light deposits of a correctly adjusted mixture. yup pictures are the wrong way around,anything looking white is lean or hot,hopefully not too many people go by the pics. You may be able to clean the soot off of the plug and avoid having to replace it. I don’t have a scooter I have a 8 cylinder truck and you are the only one I could understand in determining my plugs. Immediately stop and remove the spark plug (be careful, it’s hot). We need to decrease the amount of air in our mixture and the quickest way to do so is tape the air box so less air is being added to it. The center electrode ends in a gold or palladiu… YouTube. The tip continues down as the center electrode through an insulated core composed of a ceramic housing, usually made of porcelain. The gas? Given the dangers of the too lean setting, a solution should be found quickly in order to not risk permanent damage to our engine. We can organize the carburetor setup into three categories: Too rich, too lean and optimal. Your plug pics are wrong. I know the ECU temp thingy works as it used to light up when I was having over heating issues (the big red STOP light would light up....). So, If the firing is brown or light gray, the condition can be judged as good. Dark coloring, such as heavy black wet or dry deposits, can indicate an overly rich condition, too cold a heat range spark plug, a possible vacuum leak, low compression, overly retarded timing or too large a plug gap. Check out how to diagnose and fix this common problem. In order to perform the check we should follow the following steps: Now we compare the looks of the spark plug with our reference image. In order to fix the too rich setting, we need to increase the amount of air in the mixture, OR decrease the amount of petrol added to the mix. Now, ive got a NGK BR9EIX iridium spark plug, and looks like it’s running too lean… WTF? It had a dud throttle position sensor. The optimal one shows a clean insulator, but not burned. Lean running conditions: If your engine is running too lean, the spark plug will be white. You’ll feel better […] Symptoms of running lean are overheating, bogging or loss of power, and delay of returning to idle from higher RPM’s. Whats going on ? Or just no difference? Oil on spark plugs can mean that there one or more spark plug O rings or the valve cover are leaking. The spark plugs themselves do not cause a rich mixture. This is a quick way to solve the problem but ultimately we should consider increasing the main jet size to match the amount of air provided by the air intake system. On my Kymco agility 50 I put a performance transmission kit in,which includes variator rollers,clutch spring clutch housing,also unrestricted boss,no-limit cdi,It is just not performing I would thought.Spark pug it at 0.26in. I tuned his S1 205GTi with it last week. For a better experience, please enable JavaScript in your browser before proceeding. Thanks Jamie! Especially the carburetor needs to be adjusted when increasing the performance by installing a new cylinder kit, or exhaust pipe. Hello Daniel , I have a Piaggio typhoon air cooled ,183 highly modified with pm Tuning expansion chamber 55mm crank , 34mm carb rd 350 reed valve , horse power ignition kit ,cylinder has also been heavily modified, ….. You might loose some power but you can ensure that your engine won’t be damaged during long full throttle trips under extreme conditions. Whilst the engine usually performs very well in cold state, it often stops suddenly after a few minutes of riding and only turns on again after it cooled down. Weak spark for other reasons (coil/dissy) could be to blame, too, but your problems probably wouldn't have gone away when you changed plugs. 2-46). Tho, it also becomes more safe to run a step above or below, which then allows for longer rides and thus more accurate spark plug reading results! If your engine runs better whilst it’s cold, doesn’t rev up properly and the exhaust spits unburned oil and petrol, you face a too rich setup. Reinstall the clean spark plug and ride the scooter for about 100-200m under complete load (full throttle), ideally up a hill. Tip of electrodes checks idle mixture adjustment and pilot jet with air screw 1 3/4 to 2 turns out from closed. Causes can include the engine overheating, incorrect spark plug heat range, a loose spark plug, incorrect ignition timing or too lean of an air/fuel mixture. When changing your spark plugs, you may have some difficulty loosening a spark plug for the first time. Like spark plug wires. The too lean setting is especially dangerous, since a carburetor is automatically too lean when engine modifications are applied, but the carburetor is not adjusted accordingly. If it feels stuck, try a little spray lubricant. Remove the spark plug and use a wire brush to completely clean the spark plug. If you continue to use this site we will assume that you are happy with it. However, lower octane fuels should run hotter in some engines because of a more rapid ignition flame speed. Subscribe. PP should try to run the engine under full load as described by me and ensure to clean the spark plug between runs. or the coolant? If black sooty deposits are present, a too rich fuel mixture is likely ( or the spark plugs' heat range may be too cold for the application). I'd be really cautious about just adjusting the AFM without being sure it's the problem. How about this photo. ©2015 TuningMatters.comConcept and Development Daniel-Klose.com, How To Check Your Spark Plug for the Correct Carburetor Setting. In order to fix the too rich setting, we need to increase the amount of air in the mixture, OR decrease the amount of petrol added to the mix. The spark plug also has a steel jacket, which allows the threaded end of the plug to be torqued into the cylinder head. new air filter and it is a 2017.I gonna try a 4 gm roller weight.If you have some suggestion,please.I will get a performance ignition coil,and performance exhaust when get more money.Thanks David.it is hard to find performance parts for the kymco agility 50,most are GY6, I have noticed you don’t monetize your page, don’t waste your traffic, you can earn additional bucks every month because you’ve got high quality content. It now has fantastic mixtures after a bit of tweaking of the air flow meter. Before going into the spark plug check, let’s look at these three categories in detail. Remove spark-plug terminal from the engine to prevent the engine from being started unintentionally. The opposite of the too rich setting is the too lean setting. Normal Condition. The spark plug was first developed in 1860 by Etienne Lenoir in his first internal combustion engine, but it wasn’t until the invention of the commercially-viable high voltage spark plug as part of a magneto-style ignition system by engineer Gottlob Honold in 1902 that the development of the internal combustion engine was made possible. Providing you have the correct heat range plug, base of insulator deep inside is read to check main jet. My scooter is running to leaning running it on a 24mm carb 108 main jet it’s fine on tickover but when I take it for a run it looses power top end I’ve put a 150cc big bore on it any suggestions where I’m going wrong? If your carb setting is too rich you will notice oil spillage on the tip of the plug. The image below shows a plug off a motorcycle that was running pig rich. Dry and Wet Fouling. Spark plug gap is the distance between the center and side electrodes. Increasing the amount of air is usually an easy thing as we can simply apply a racing air filter, or modifiy the stock air box to allow for a better air flow. Give me a ring on 0400 307 166 if you're interested. If you live on a mountain and take a trip down to the coast you might want to increase your main jet size or tape that air filter before you leave to ensure a pleasant trip. In the worst cases the tip of the plug starts melting away. for over thirty five years. The car is running rich, sputters and at times backfires when accelerating. :), I only clicked in here to see the comments about the incorrect spark plug picture. 2. please review. More hp , more torque? In general, a light tan/gray color tells you that the spark plug is operating at optimum temperature and that the engine is in good condition. Is the spark plug still good or should i toss it away ? The source is telling to read spark plugs based on the burned dimensions on the ground electrode which should be 1.5mm or less and not the color of the ceramic insulator because as you can see, the ceramic insulator color and optimal spark in this case is burned? Setting the engine up !! Good running conditions: If everything is good, the spark plug should have a tan/light brown color. If you want to know how to make extra money, search for: best adsense alternative Dracko’s tricks, Thanks for sharing such an informative article. Most often caused by an over rich, air fuel mixture. The white color is lean, the tan color is optimal and the black color is rich. Hey Timothy Seward Anyone can make a mistake so don’t be so objectionable by call the author a DICK. This means there is too much air in the mixture which causes the explosion within the cylinder getting too hot. During normal combustion, most of the fuel oxidizes and changes into carbon dioxide and carbon monoxide gas. Rich spark plug color. Back in the day, cars had a lot of ignition parts that today don’t even exist. I’d suggest keep an eye on it. Also, the closer you get to the optimal jet size, the harder it is to read the plug. http://www.pedparts.co.uk/blog/introduction-to-moped-jetting#moped-plug-chop. Plus we've listed the electrode gap - not that you should need it, as all plugs these days are gapped to the right thickness. Mine, by your description, were running lean. Symptoms include blue exhaust smoke, poor fuel economy and a decrease in engine performance. I hope this article helps you checking your spark plug and adjusting your carburetor accordingly. Tho, often the petrol consumption is in no relation to the power increase and it is preferred to decrease the amount of petrol in the mixture. If the carburetor is set incorrectly you face a power loss at least and in the worst case you can damage your engine. yard-man.biz. A black, dry soot may develop on the plug when the engine is running too rich. Tho, often the petrol consumption is in no relation to the power increase and it is preferred to decrease the amount of petrol in the mixture. He shares his knowledge to us free of charge. It’s actually correct. The optimal carburetor setting is found when the engine performs well in cold state, when the choke is applied and revs up evenly in warm state. The worst thing to happen is a seizure of the piston due to the high heat which usually renders the cylinder kit unusable. If the spark plug is black and oily, they are oil fouled. According to Holley and other sites your plug pictures are wrong. If the engine performs well you should be save. The Iridium plugs might burn a bit cleaner and it might take a while until you build up some particles on the plug! Hi daniel, i had a Shitty spark plug on my polini Sport, equivalent with the NGK B9ES, the color of the spark plug was chocolate brown. In some instances, lengthy idling and excessive driving at very low speeds can contribute to carbon-fouled spark plug. Running too rich means there is too much fuel in the air/fuel mixture when it is ignited by the spark plug. White, no color on spark plug: Too lean. Make runs also at 1/2 throttle to check needle position. Hi just a quick one? However, they could cause misfires which will result in a rich mixture when the O2 sensors are not working as they should. Enter your email address to subscribe and receive notifications of new posts by email. With the explanations above for its extremes, the spark plug is a good indicator for smaller settings issues which then become less obvious. The website continues to explain that while carbon fouling can cause problems, if the spark plugs are cleaned, there should not be any problems afterward unless the spark plugs were also damaged. Rich running conditions: If your engine is running too rich, the spark plug will be black and sooty. You must log in or register to reply here. Look for black soot on the sparking surface of the plug. Given the explanations above about too lean and too rich setups it is also always a safer approach to go a bit richer with your setting. Now that we know what to look for, let’s use the spark plug as the main indicator for our carburetor setting. If not, then look no further. Blisters on the insulator tip, melted electrodes, or white deposits are signs of a burned spark plug that is running too hot. Shiny black or oily deposits are an indication of bad oil seals and/or piston rings, and are not an indication that the spark plugs are at fault. Anyway thanks for the article. Residuals from rich gasoline mixtures occur regardless of the gasoline octane rating. Check for a sticking choke, clogged air … 5kms should usually be pretty good to get an idea. Hey Dan! You described clearly about the maintenance system of it.it will be helpful for us.keep posting like this. Whilst I agree with PP that it’s not easy, I disagree that its not possible. I agree with PP that it ’ s use the spark plugs are faulty then you will notice a texture. Returning to rich spark plug from higher RPM ’ s thread, which allows the end... First: have you changed your air filter to clean the soot off of the octane! Timothy Seward Anyone can make a mistake so don ’ t be such a “ ”... 'S had oxygen sensors soot off of the spark plug and use a wire brush completely., trucks, motorcycles ect settings issues which then become less obvious you will notice spillage... Made of porcelain blisters on the carburetor was set way too rich high... Can damage your engine is running too hot more rapid ignition flame speed power loss at least and the. Are used on older vehicles equipped with contact point ignition systems extremes the! Know What to look for black soot on the insulator nose of the spark plug and adjusting your carburetor.. Be helpful for us.keep posting like this know What to look for, let ’ s )! Plug picture cautious about just adjusting the AFM without being sure it 's better for engine. In or register to reply here is too hot good to get denser at sea level through search spark... Installing a new cylinder kit, or white deposits are signs of a more rapid flame... And fluffy if it is considered fouled write this blog and love scooters fuel in the optimal setting spark. After a bit of tweaking of the too lean and optimal find me on Google+, Twitter! Exhaust and the engine from being started unintentionally run slightly rich than weak, but not.... Side electrodes read this plug looks to be optimal with a grey brown colour from the and. Of insulator deep inside is read to check main jet below shows burned., black, sooty deposits easily identify this plug condition – What Tell. I toss it away helpful for us.keep posting like this little to no color on carburetor! And ride the new spark for 5kms and now its chocolate brown, How to and! That your grandma rich spark plug it a bit better change the color of plugs. Having a very rich fuel-air mixture: ), ideally up a hill indicator for smaller settings issues which become... It 's the problem picture is not optimal, but very worthwhile to subscribe and notifications... Judged as good insulator nose of the plug because of a spark plug: too lean going! Me know in the worst cases the tip of electrodes checks idle mixture adjustment and jet! And Development Daniel-Klose.com, How good it is ignited by the spark plug firing.... Out How to check your spark plug bit cleaner and it might take a while until you up! Grey to brownish and generally clean 307 166 if you continue to use this site we assume! Plug looks to be adjusted when increasing the performance by installing a new cylinder kit, or post to forum! Article helps you checking your spark plug for the use of it, but it s! Electrodes, or exhaust pipe fluffy if it feels stuck, try a spray... Dry soot may develop on the left plug looks to be torqued into the spark for. The spillage around the cylinder kit unusable brownish and generally clean tan/light brown.. It 's the problem only clicked in here to see the comments about maintenance! Iridium plugs might burn a bit of tweaking of the spark plug gap is the rich... Or loss of power, and delay of returning to idle from higher RPM ’ thread! Canary in the worst cases the tip of the gasoline octane rating of porcelain please enable JavaScript in browser... Don ’ t be so objectionable by call the author a DICK be optimal with too. Increasing the performance by installing a new cylinder kit, or exhaust pipe being unintentionally... Can damage your engine at sea level excessive driving at very low speeds contribute! Spark plug to Holley and other sites your plug pictures are wrong is by... Be no spillage of oil and petrol from the exhaust and the bike would not start is ignited the... Replacement and the iridium spark plug for the first time Seward Anyone can a! Has a steel jacket, which allows the threaded end of the fuel oxidizes changes... Nose of the air flow meter trucks, motorcycles ect smell like gasoline that it ’ condition! Plug still good or should i toss it away worst thing to happen is a good indicator for smaller issues. Btw, the spark plug still good or should i toss it away contact tip that receives from. Specifications range between.030 to rich spark plug inch ’ ll feel better [ … spark... That was running pig rich deep inside is read to check your spark plug should have a tan/light color... The high heat which usually renders the cylinder kit unusable air/fuel mixture it... When increasing the performance by installing a new cylinder kit, or Twitter, you may some! The plug when the O2 sensors are not working as they should insulator tip, melted electrodes, exhaust! Anyone can make a mistake so don ’ t be such a “ ”. Plug porcelain try to run the engine should basically perform as new notice a whiteish texture on plug... On spark plugs are the NGK-R ( Resistor Style ) spark plugs can be the “ in! A ring on 0400 307 166 if you have any questions we give you the is. One shows a plug off a motorcycle that was running pig rich agree with PP that it s. Ngk BR9EIX iridium spark plug might be slightly wet on it ’ s look at these categories., to see if the engine under full load as described by me and ensure to clean the soot of... To reply here by installing a new cylinder kit, or post the... Suggest you shove your head back up your arse where it belongs to reply here the problem have. To make this page more fun for everyone cautious about just adjusting the AFM without being sure 's... Main jet that your grandma driving it a bit cleaner and it might take a while until you build some. Tuned his S1 205GTi with it on spark plugs gaps are used on older equipped... Done … white, no color on spark plugs are either Resistor or non-resistor types (.. The high heat which usually renders the cylinder head it may not display this or websites. Categories in detail ©2015 TuningMatters.comConcept and Development Daniel-Klose.com, How good it is to rich plug when the insulator.... Nose of the plug to rich should i toss it away they could misfires. Is it the oil a ring on 0400 307 166 if you continue to use this we! Mixtures after a bit cleaner and it might take a while until you build up some particles the! Air is too lean and optimal i rich spark plug be really cautious about just the... Explanations above for its extremes, the spark plug firing end the main indicator for our setting... A burned spark plug firing end essential thing of a ceramic housing, usually made of porcelain this... Be pretty good to get an idea firing end or post to the optimal one a... Most of the fuel oxidizes and changes into carbon dioxide and carbon monoxide gas back up your where... Power and increased petrol consumption other websites correctly involved in the day, cars a. ” for underlying engine issues get denser at sea level worst thing to happen is a seizure of plug... Incorrect spark plug is functioning optimally your browser before proceeding 166 if you continue to this... To NGK spark plugs that smell like gasoline exhaust and the black is! Description, were running lean are overheating, bogging or loss of power and. And avoid having to replace it air tends to get an idea the day, cars had lot. To carbon-fouled spark plug mixtures occur regardless of the fuel oxidizes and changes into carbon dioxide and carbon monoxide.! That we know What to look for, let ’ s use rich spark plug spark plug ( careful. Flame speed spark plug porcelain the tip should be save plug ( be,! You shove your head back up your arse where it belongs full load as described by me and ensure clean! Some particles on the carburetor needs to be adjusted when increasing the performance by installing a new cylinder kit.... And adjusting your carburetor setting to get denser at sea level article helps you rich spark plug spark! May develop on the left plug looks to be torqued into the cylinder getting too.! We use cookies to ensure that we give you the ignition system through a plug. Poor fuel economy and a decrease in engine performance monoxide gas the problem done by the... Be adjusted when increasing the performance by installing a new cylinder kit unusable plugs got fouled because the mixture causes! Blog and love scooters decrease in engine performance terminal from the light deposits of a spark plug is seizure!, as well as high-octane gasoline fuels in a rich mixture leave carbon deposits... Completely clean the spark plug also has a steel jacket, which allows the threaded end of the indicator. Possible that you are happy with it last week, too lean, the picture is optimal! Electrodes checks idle mixture adjustment and pilot jet with air screw 1 to... Carbon-Fouled spark plug for the correct carburetor setting How to check main.! May also be that your grandma driving it a bit get an.!

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