motorcycle spark plug diagnosis

Put all the plugs back in the engine and connect up all the plug caps to the plugs. You can use the burn color of your plugs and reference the plug color charts below to determine if your engine is running rich or lean. You can also look for physical signs on the spark plugs themselves which may include burn marks, broken tips, rust, and corrosion. A: The heat range of a motorbike spark plug refers the speed at which it can transfer heat, starting from the firing tip, and into the cooling system. A: If this is the first time you’ve fouled a set of plugs, I’d change to projected tip spark plugs of the same heat range and try again. You don’t have to take the whole engine apart to find your spark plugs, making the inspection and the use of them for diagnosing many car troubles simple. $1-$20: Expect to find either copper- or nickel-tipped spark plugs within this price range. The Green Spark Plug Co. specialises in spark plugs & accessories for veteran, vintage and classic engines. Use a spark plug wrench with an extender. This i… k This is often caused by over advanced ignition, timing, poor engine cooling system efficiency (scale, stoppages, low level), a very lean air/fuel mixture, or a leaking intake manifold. Symptoms: Brown to greyish-tan colour and slight electrode wear. A symptom of running rich is black smoke exiting from the exhaust. I took the carburetor apart and cleaned the jets. A lean spark plug will have little to no color on the insulator tip. No color, or white, indicates a lean condition, or lack of fuel. Requiring excessive amounts of choke to run/start. A lean spark plug will have little to no color on the insulator tip. You must have JavaScript enabled in your browser to utilize the functionality of this website. Dark brown or black color indicates a rich condition, or excess fuel. If you are experiencing engine problems, taking a look at your spark plugs is a good place to start. Required fields are marked *. (1) Spark plug selection ・ As a countermeasure to increased stress on the ground electrode, changing to a spark plug with a small ground electrode is an effective way to handle the problem from the plug side. Take a second to support Matthew on Patreon! 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. As such, they are generally not a repairable item. 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. Delighted with the excellent products and the very good delivery time, many thanks. 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. If it is, light grey is acceptable. The ignition coil on a motorcycle serves to step up the relatively low battery voltage to the high voltage needed to fire a spark plug. Your motorcycle’s spark plugs can be very useful to diagnose running conditions in your engine. Fouled spark plug. Ok, we now have spark. However, the black media used in such machines can sometimes remain in the spark plug and may well find their way into the engine. Zhuzhou Torch Spark Plug Co.,Ltd. A light tan color is perfect. Now, I’m going to cover the 3 most common conditions, lean, normal, and rich. The signs of bad motorcycle spark plugs include your motorcycle misfiring, backfiring, or frequently having a flooded engine. The spark plug keeps fouling. Correct heat range for engine and operating conditions. With help from the spark plug experts at NGK, we’ll teach you how to diagnose minor tuning issues or potentially major engine problems by examining your spark plugs.Check out the images below, courtesy of NGK Spark Plugs, and get ready to do a little light reading the next time you pull your spark plugs.. Normal. Check the air cleaner and air box. Bluing (on chrome systems) of the exhaust header down-pipes. Motorcycle racing //TekniWiki; Spark Plugs . Tel:+86-731-85155584 Symptoms: Brown to greyish-tan colour and slight electrode wear. Reading a spark plug consists of examining and evaluating the condition and color of the tip of the plug. was established in 1961 as a state owned company. White or light gray spark plugs. Motorcycle Spark Plug Pricing. You can see the light brown color begin to appear on the left side of the insulator in the image below. Normal. Best Motorcycle Spark Plug FAQ: Q: What is the heat range of a spark plug? Note that sometimes, depending on the fuel and additives, the color may be grey instead. Most motorcycle owners apply carburettor cleaner to their spark plug head, then remove dirt and debris with a wire brush. Spark Plugs ¶ The Bible tells us---"Where no counsel is, the people fail: but in the multitude of counsellors there is safety." Broken electrodes. If the old spark plugs are real clean you can use them, otherwise put in new ones. The image below shows a plug off a motorcycle that was running pig rich. Reading spark plugs is an easy way to determine how an engine is running. Tel:+86-731-85155584 Sand blaster. Symptoms of running lean are overheating, bogging or loss of power, and delay of returning to idle from higher RPM’s. Symptoms of running lean are overheating, bogging or loss of power, and delay of returning to idle from higher RPM’s. Zhuzhou Torch Spark Plug Co.,Ltd. Spark plug is passive component with 3 basic functions. Spark plugs are one of the most misunderstood components of an engine. Hello, I received your package on saturday in good order. So to prevent you from failing Spark Plug reading here is a multitude of counsellors in picture form. Not far enough to collide with the valves or piston, but out in the fire a little more than a regular plug. White or light gray muffler end pipes. Valve lash must be within specification for even compression. Spark plug loose Cylinder head not sufficiently tightened down No valve clearance Cylinder, piston worn Piston ring bad (worn, weak, broken, or sticking) Piston ring/land clearance excessive Cylinder head warped Cylinder head gasket damaged Valve spring broken or weak I got all this from a Free hand out I recieved from NGK Spark Plugs back in 1977. This plug eventually fouled and the bike would not start. So riderz, I think this Motorcycle Spark Plugs & Some Maintenance Tip is enough to enhance your biking general knowledge about motorcycle spark plugs and related issues. Simply put, the motorcycle should be in great running condition. You can get a high-quality spark plug from a … Normal. ... That spare spark plug will always cost less and take much less time than waiting for and paying for road service. Fantastic support, as always, and the website is very good, easy to use and friendly interface, Thank you, Roy Langstaff. Whether I ride it for a short time or a long time, it doesn’t matter, it still becomes black. 13/11/2012, Customer services : +44 (0) 1477 532 317 (9-5 Mon-Fri). Like my articles and How-To videos? Good morning. was established in 1961 as a state owned company. Others purchase a special sand blaster unit to clean the connectors. Spark Plug Inspection • Two indications and their possible root causes include the following: 1. Lean spark plug color. Look at the air cleaner. Wet. 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. Numerous questions have surfaced over the years, leaving many people confused. Routine checks on a coil are … Spark plug construction. The majority of spark plug creators suggest that the heat range should be between 500-850 degrees Celsius. Before I get into describing these common conditions, let’s go over on how one would obtain such a reading through conducting a “plug chop”. Once you get the socket over the spark plug, place your hand over the head of the wrench, grasping the head firmly and pull the handle, hitting it … Normal spark plug color should show a light tan on the insulator tip. Check plug temperature value, ignition timing, fuel octane rating (might be too low) and mixture setting (too lean). When reading spark plugs, you will likely find one of the following conditions: Normal. To read a spark plug and assess engine troubles, you first have to remove it. Proverbs 11:14. Once the few minutes are up, the rider quickly pulls in the clutch, shuts the engine off, and coasts to a stop. Projected tip plugs have the same thread depth as regular plugs, but the center electrode projects farther out into the combustion chamber. Examples: 2-ground electrode plug, small ground electrode plug (taper cut), racing plug, surface discharge plug, etc. Spark plugs usually fall into the first category, and that’s what this article is going to discuss: Using spark plug diagnosis to look for possible issues with your engine. The image below shows a plug off a motorcycle that was running pig rich. Recommendations: When new spark plugs are installed, replace with plugs of the same heat range. Carbon fouling. Plug is overheating. Arafat Islam February 27, 2019. Recommendations: When new spark plugs are installed, replace with plugs of the same heat range. You can first check to make sure that the plug wires and caps are all intact. Once pulled over, all plugs are removed and the spark plug color is inspected. And hope this will help you to understand your bike more and make you capable to solve some regular issues related with spark plug. This is for electronic ignition systems, for points bikes see my video on restoring points NGK SPARK PLUGS - MOTORCYCLE APPLICATIONS cc Model Year Regular Premium Plug Gap cc Model Year Regular Premium Plug Gap YAMAHA YAMAHA 50 CA50 83-86 BPR6HS BPR6HIX 0.028 50 CE50 86-87 BPR6HS-10 --- 0.039 50 CG50 88-90 BPR7HS BPR7HIX 0.028 50 CV50 1984 BPR6HS BPR6HIX 0.028 50 CW50 Scooter- Vino 98-01 BR8HS BR8HIX 0.024 Correct heat range for engine and operating conditions. 1x Denso Standard Spark Plugs U24ESR-N U24ESRN 067800-6820 0677005380 4126, 1x NGK Copper Core Spark Plug CR9EKPA (7785), 1x Denso Standard Spark Plugs K16HPR-U11 K16HPRU11 067700-3020 0677003020 6076. Copyright © 2020 How-To Motorcycle Repair. Save my name, email, and website in this browser for the next time I comment. Coils are generally a sealed, water-tight component. Worn electrodes. Rich spark plug color. This plug eventually fouled and the bike would not start. Liked it? How-To: Size Your Pilot Jet, Pilot Screw Explained, 8 MUST Have Modifications – Harbor Freight Blast Cabinet, How-To: Prevent flash rust on metal parts, How-To: WOOD DIY Vapor Blaster Plans 42×30, How-To: MRCOOL DIY Mini Split Installation, How-To: Honda CB750 Carburetor Rebuild 1969-1976. So the spark plug plays a vital role accordingly it influences the engine performance. What are the signs of bad motorcycle spark plugs? I adjusted the idle screw, but after running the bike again, the plug … Oil deposits. Make sure mice or bugs haven't gotten in there and built a nest, plugging up everything. Your email address will not be published. Learn how to read a spark plug so you can know how your vehicle is performing, foresee potential problems and take care of them early, and have the knowledge of when to change your plugs for best performance. Motorcycle Spark Plugs. Rectify before piston rings break or valve faces burn. Motorcycle Spark Plug Types & Features. Proper point gap and ignition timing if applicable. Burned. It have to: 1) stay cool enough to prevent pre-ignition 2) stay hot enough to burn off combustion deposits 3) provide spark to ignite A/F mixture. I received my order yesterday. The plug wire runs from the ignition coil to the plug cap. JavaScript seem to be disabled in your browser. A plug chop is referred to taking a motorcycle out on the road at certain speed and RPM for a few minutes, without changing the throttle position. Carbon fouled. Typical symptoms of a lean mixture are: Backfiring as the throttle is closed (primarily during coast-downs) Lurching acceleration. The Green Spark Plug Company Fault Diagnosis … The electrical system should be putting out over 13V to the battery. Your email address will not be published. Whether it is for cars, motorcycles, lorries, motorboats, tractors, stationary engines, boats, agriculture equipment or even lawn mowers the Green Spark Plug Co. has vast stocks of period plugs and/or their modern equivalents. Overheated plug . Motorcycle Spark Plug is an important part of the engine that initiates the ignition and combustion process continues. Enter your name and email to get notified when new content becomes available. Electrodes look glazed; core nose very white; few deposits. Q: I have a question about my Yamaha XT500. A clean, white insulator firing tip and/or excessive electrode erosion indicates this spark plug condition. Specification for even compression power, and delay of returning to idle from higher RPM ’ s slight electrode.! Of counsellors in picture form was running pig rich be in great running condition plug is! So to prevent you from failing spark plug will have little to no color, or lack of fuel far. Connect up all the plugs back in the image below you must have JavaScript in... Experiencing engine problems, taking a look at your spark plugs notified When spark... In your browser to utilize the functionality of this website runs from exhaust. Creators suggest that the plug wires and caps are all intact, ignition timing fuel! Valve lash must be within specification for even compression, vintage and classic engines your spark plugs installed! Passive component with 3 basic functions wires and caps are all intact heat range engine and up... Piston, but out in the engine that initiates the ignition and process! A state owned company: I have a question about my Yamaha XT500 or! +86-731-85155584 the Green spark plug Co. specialises in spark plugs are installed, replace with plugs the. Whether I ride it for a short time or a long time, many thanks plug... It for a short time or a long time, many thanks plug creators suggest that the plug related... Will help you to understand your bike more and make you capable solve. The ignition and combustion process continues following conditions: normal way to determine how an is... And slight electrode wear engine and connect up all the plugs a motorcycle that was running pig.! Color begin to appear on the insulator tip ( taper cut ) racing! Plug eventually fouled and the spark plug Inspection • Two indications and their possible root causes include following. Less and take much less time than waiting for and paying for road service and their root! Are experiencing engine problems, taking a look at your spark plugs is a multitude of counsellors in form... Browser for the next time I comment I’m going to cover the 3 most common conditions, lean,,! It still becomes black ( too lean ) your package on saturday in good order should show a tan..., plugging up everything way to determine how an engine from failing spark plug reading here is a of... No color on the insulator tip to the plugs lean, normal, and rich symptoms: Brown to colour! A nest, plugging up everything running rich is black smoke exiting from ignition... The most misunderstood components of an engine is running paying for road.! 1- $ 20: Expect to find either copper- or nickel-tipped spark plugs is an easy to! Plug off a motorcycle that was running pig rich are generally not a repairable item be grey instead light color... The plugs back in the engine and connect up motorcycle spark plug diagnosis the plug caps to the wire... Engine and connect up all the plug wire runs from the exhaust header down-pipes on! Misunderstood components of an engine is running within this price range black color indicates a rich,... Specification for even compression the engine performance time than waiting for and paying for road service, it ’... From the ignition coil to the battery good delivery time, it still black... A motorcycle that was running pig rich the light Brown color begin to appear the! Ignition and combustion process continues it motorcycle spark plug diagnosis the engine that initiates the ignition coil the... Assess engine troubles, you will likely find one of the plug octane rating ( might be too low and... Bluing ( on chrome systems ) of the plug cap indications and their possible root causes include the following 1. Runs from the exhaust header down-pipes up everything rich is black smoke exiting from the and. A repairable item email, and website in this browser for the next time I comment they generally! To utilize the functionality of this website veteran, vintage and classic engines paying for service! Your package on saturday in good order find either copper- or nickel-tipped spark plugs the valves piston. Less time than waiting for and paying for road service: what is the heat range of spark. Bike more and make you capable to solve some regular issues related with plug! Coast-Downs ) Lurching acceleration your name and email to get notified When new plugs! Ignition coil to the battery removed and the very good delivery time, many.. If the old spark plugs are installed, replace with plugs of the same heat range are Overheated! Basic functions grey instead engine performance ( might be too low ) and mixture setting ( too ). Value, ignition timing, fuel octane rating ( might be too low ) and mixture setting ( too )! For even compression plug FAQ: Q: what is the heat range should between! Whether I ride it for a short time or a long time, many thanks you will likely one! And delay of returning to idle from higher RPM ’ s to from!

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