It needs to be disconnected altogether. Which transmission do you have on your GTS150? With them off the motor, both coils give 1.6 ohms kill switch tab to coil bodyclose enough to a hard short to not matter. I have cleaned the carb. Voltages exceeding the insulation capabilities of existing ignition components can lead to early failure of those components. I have a B&S 10hp on my generator, after reading above , I am confused could the oil level safety switch be bad ? Below is the vehicle information. The metal case/shell (or the jacket, as many people call it) of the spark plug withstands the torque of tightening the plug, serves to remove heat from the insulator and pass it on to the cylinder head, and acts as the ground for the sparks passing through the central electrode to the side electrode. Its a little larger than the AC type.. This page was last edited on 25 October 2022, at 22:35. The plug also has to withstand the extreme heat and pressure inside the cylinder, and must be designed so that deposits from fuel additives do not build up on the plug. The time that the fuel takes to burn is roughly constant. 1. turns over easily Can you help thank. Also tried cdi plugged up and kill switch jumped, no luck. Hot-Spark CDI is New I have a tomberlin crossfire 150cc gy6 clone. The generator is practically new about 2 hours of use. Plug gap is .025 & condenser gap is .020 & condenser points have been cleaned. The history of the capacitor discharge ignition system can be traced back to the 1890s when it is believed that Nikola Tesla was the first to propose such an ignition system. It was designed by Edward S. Huff with US patent #882003 filed July 1, 1905 and assigned to Henry Ford. Or a BS short somewhere ? it has great spark and runs fine with the key in the Start position or just slightly off the On position, but dies instantly if switched back to On position. I disconnected the regulator tested all voltages yes there back. Ive tried 3 new cdis and no spark. It was common before the modern era of computerized fuel injection to specify at least a couple of different heat ranges for plugs for an automobile engine; a hotter plug for cars that were mostly driven slowly around the city, and a colder plug for sustained high-speed highway use. Harris, undergraduate of the City University London made a detailed electrical engineering analysis of the Marston design as well as automotive engine measurement trials to verify fuel economy. Do the same ohm meter readings apply? When I plug it up, obviously its getting straight power to it to cause it to light up, and when I start it the spark makes the light dim like its supposed to.. It passes through the wall of the combustion chamber and therefore must also seal the combustion chamber against high pressures and temperatures without deteriorating over long periods of time and extended use. Both mowers resistors failed. Also, there are no high-voltage spark-plug wires, which also wear out. The entire ignition system, coil and points, are under the magnetized flywheel. To diagnose your ignition system, you will need to do each of the steps in this article, in sequence. The scooter has 14 miles on it and crashed. However, ignition modules, are not able to do the job alone. I bought a upgraded cdi and upgrade coil and plug, everything had spark and buggy ran until I put new cdi and coil. Didnt hurt bike But never been road sence. I have a Briggs & Stratton Wheelhouse 5500 generator. There was no bad connection between the lead and the cap because I had those separated and checked the connection which was good. I have nothing coming from stator. When bypassing your switches, were you sure to remove pin #5 from the CDI connector? strong your engine is, you won't get the most out of it without a good spark. I have a Briggs Coil with three wires. what should the ohm value for it be and is it like a capacitor The theory holds that this will maximize the exposure of the fuel-air mixture to the spark, also ensuring that every combustion chamber is even in layout and therefore resulting in better ignition. 6-cyl): Nissan; Datsun; Mazda; Chevrolet Luv; Dodge have replaced cdi but no change. How many miles until the Hot-Spark If your plug wire has a boot covering the connector then insert one of you fingers into the boot ant then put another finger of same hand anywhere on the block. Need help! I have to cross the ignition relay to turn over the engine, but of course get no fire. Buy Vplus Ignition Coil DG508 & Spark Plug SP479 Compatible with Ford 4.6L 5.4L V8 DG457 DG472 DG491 Crown Victoria Expedition F-150 F-250 Mustang Lincoln Mercury Explorer (Set of 8): Coil Packs - Amazon.com FREE DELIVERY possible on eligible purchases I was initially getting a reading of 9k ohms from my original coil. distributor), 6-cyl Autolite/FoMoCo/Prestolite During World War Two, Bosch had fitted thyratron (tube type) CD ignitions to some piston engined fighter aircraft. Just a few days ago I used the machine, but it was not easy to start on that occasion, and the spark was very weak. The starter clutch and flywheel do though. I grounded number 4 pin and cut wire on number 5 pin. I thought one side of coil should be grounded. The terminals of the coil are going to be marked negative and positive, and these are the two points where the resistance of primary winding can be measured. One is the spark plug, the other is the condenser and the third is bare copper wire, I think a ground. Although there are many differences in wiring between models, most GY6 ignition systems work the same as shown in this illustration. If you do I would try a new CDI. Conversion Kits for Thanks, Reading is dependant on the coil It would need to be the same model as this to have the same spec. I get backfire once in a while. I do not see any spark in checker and at plug , no pop when lighter fluid is put into spark plug , 4.85 k ohms reading on coil. I have no fire to spark plug. You can trouble shoot the key switch with a multi meter. 8-cyl): or faulty relay. I would say no if the wiring is the same as above. Solid-state systems: the more modern option, these systems use a tiny transistor in the coil or armature to close the electrical circuit that travels through the spark plug lead to the spark plug(s). (4-cyl, 6-cyl, JF4 JFU4 JFUR4 JFUD4 JFU6 JFUR6 JFUD6, 12-volt, negative ground): Alfa-Romeo Voltage at the spark plug can be anywhere from 40,000 to 100,000 volts. May need to be in a relatively dark place to see spark. Blue/yellow is .1, black/red is 134vac. Hola Terry. Marine Engine Electronic Ignition Conversion Kits for: Aerojet, Chevrolet Marine, Bosch Aftermarket Also taken the bowl off the carburetor and cleaned the jets out. The first would be to develop another means of triggering the discharge of the capacitor to one discharge per power stroke by replacing the points with something else. I just got an asw fun kart 150cc that isnt getting spark, I was told it was the coil so I bought one and still no spark. The pickup puts out 2.2 VAC. 3PRE8U1 The crankshaft position (CKP) sensor, monitors the position or rotational speed of the crankshaft. US based service team, money back is guaranteed. So I did a voltage test to see what is lighting it up my green wire going into the cdi has 12 volts with the key off but when you crank the engine or turn the key to the on position there is no voltage at this green wire. Thinking I could have a fuel issue I have checked the filter and also used starting fluid with no success. Bosch Distributors, Hi, I bought a new 150cc Roma motorcycle and til this day back lights been flickering off & on especially if you hit a small speed bump ,well I took it to the shop & supposly changed something I got charged for ? First, there is no distributor, which is an item that eventually wears out. IF THE KILL TAB is SHORTED (shows CONTINUTITY) to the metal BODY of the coil, the coil is DEFECTIVE. If those check out, replace your CDI, try and determine if you have an AC CDI or DC by testing for battery voltage at pin 6, with the engine not cranking. They were unsuccessful, but did provide much data on the advantages of such a system, should one be built. Electronic Ignition By rights it shouldnt matter since all it does is produce an AC voltage source. Appreciate any help, way too many hours invested in this job. Ordered new coil. Although there are many differences in wiring between models, most GY6 ignition systems work the same as shown in this illustration. The 3AUT4U13AUT4U23HIT4U1, 6-cyl: Thanks, Terry. There is no direct relationship between the actual operating temperature of the spark plug and spark voltage. yes it would matter but I dont think its possible because the key way would not be correct and would not allow you to put the stator on. Bill. We cannot tell if this reading means its faulty as this test is applicable only to coil model in the video. It has less than 4000 miles on it. One thing I did notice was the new CDI box was smaller (about 1/2 shorter and 1/2 narrower) The CDI box is a 6 pin rounded type connector. Trigger 0.1 VAC PLEASE HELP. You may not need a new switch, often times the switch is good, just not getting power due to a faulty connection or fuse blown. The CDI trigger Pin 1 trigger wire Blue/white stator wire, Pin 2 to coil yellow/black, Pin 3 N/C, Pin 4 Ground both battery and frame, Pin 5 open N/C, Pin 6 Red/Black stator wire. It is designed to withstand 650C (1,200F) and 60kV. An examination, or "reading" of the characteristic markings on the firing end of the spark plug can indicate conditions within the running engine. Leave the #4 wire in the connector. Most passenger car spark plug wires snap onto the terminal of the plug, but some wires have eyelet connectors which are fastened onto the plug under a nut. I do not get a spark. This DC current flowed through a wire to an ignition coil mounted outside of the engine. Your email address will not be published. Finally, have someone crank the engine and watch for spark. Distributors (4-cyl, 6-cyl): Toyota 4-cyl and 6-cyl Carina, Celica, Corolla, Corona CDI Ouput: 0.0v to 2.3v. Heres a link to the guide: https://www.buggydepot.com/tech-center/150cc-gy6-carburetor-cleaning-guide/, I have a crossfire tomberlin 150 got a new switch dont know where wires go can someone help, https://www.buggydepot.com/tech-center/150cc-3-wire-ignition-switch-pinout-crossfire-150-and-150r/. Ive tried the bypass switches and I ordered a new ignition switch. If I take the resistor cap off, Im getting Sometimes the end of the plug will appear glazed, as the deposits have melted. components. Replace Points with Zero-Maintenance Electronic Ignition. Used it twice this 2017 season, no issues at all, then come to use it for the third time (and just two weeks after the last time) and it simply will not start. blue/yellow=0.149 vac. Worked for a few starts. If you keep tapping the start button you can get it to rev high. One with 1k ohm and one with 5k ohm. Spark plug reading viewers, which are simply combined flashlight/magnifiers, are available to improve the reading of the spark plugs. If it is too cold, electrically conductive deposits may form on the insulator, causing a loss of spark energy or the actual shorting-out of the spark current. Delivers twice the voltage to the spark plugs, increasing horsepower, fuel economy, and spark plug life; 2:1 Improvement over "points" in current fall time for increased coil output Ignition Kit, Bosch Black Coil, Beru OEM Rotor & Distributor Cap, Beru France Yes if you are experiencing problems relating to lack of or weak spark a reading above 5 k ohms indicates your coil is in need of replacement. Also, I have no blue/yellow wire. A new CDI will run fine for a while and die suddenly, replace the CDI and the same thing happens. The pulse arcs across the small gap between the rotor and the contact (they don't actually touch) and then continues down the spark-plug wire to the spark plug on the appropriate cylinder. I started the one we have been using and it was so rich, you couldnt stand it, so I rebuilt it with a new carb kit and new plug and filters. The pickup coil monitors the rotation of the distributor and triggers the ignition system. A spark plug is composed of a shell, insulator and the central conductor. VI. The electricity must be at a very high voltage in order to travel across the gap and create a good spark. A simple type of crankshaft position sensor. replacement interval. Should it be between 2,5-5 also for bigger engines? Thanks a bunch for your help and comments. you should have continuity in the run position between the green and black terminal. 6. The length of the threaded portion of the plug should be closely matched to the thickness of the head. I even put old stuff back on but has no spark, was I suppose to upgrade stator to? [25] Spark plugs with tapered seats should never be installed in vehicles with heads requiring washers, and vice versa. Also the coil has been replaced as well as the spark plug. Polonium spark plugs were marketed by Firestone from 1940 to 1953. It was the SCR, Silicon-controlled rectifier or thyristor invented in the late 1950s that replaced the troublesome thyratron, and paved the way for a reliable solid-state CD ignition. i have a dongfang 50cc df50sst moped and someone cut all my wires from main harness and i need to rewire the whole thing the parts themselves still have a connector on them just got to run main harness to connect everything ign,lights,cdi,starter etc etc does anyone know where to get a harness to complete this and a diagram to follow or how to wire it myself, These are the list of my problems of my GY6. I ordered a new coil from amazon for my 6 hp Briggs, the ohm reading is 16 k is the new coil bad ? I did a continuity beep test at this green wire in the on and crank position It has continuity to ground. I dont understand where your getting your reading. Also, I get no power on my ignition switch. I am a mechanic, but we all get stumped and all data dont cover gy6 engines. So it sat in my garage for about two years and now it wont start. Lenoir is generally credited with the invention of the spark plug. It starts and runs fine until your throttle up past about 35, then it starts bucking and sputtering like ya out of gas or something, then when ya back of the throttle it runs ok again. (compression test was good). I have a cg 150cc engine I am installing in a home built buggy. Unfortunately, its also, one of the most common types of engine problems. Any ideas??? Of these windings, one is dedicated to supplying the CDI with ignition power. Such variations include the use of two, three, or four equally spaced ground electrodes surrounding the central electrode. Lucas-Compatible 25D Electronic Distributor. The primary coil has a comparatively small numbers of turns of copper wire (probably in the region of a few hundred turns), and should have a resistance of maybe 1 or 2 Ohms. : Prestolite Many thanks, spark plug and coil are new and did all the Ohm checks without the stop switch lead attached to the coil. Then we'll look at all of the components that go into making the spark, including spark plugs, coils and distributors. You are correct the Multimeter is set to 20 Kohms and the Reading for a working coil should be between 2500-5000 Ohms. She did help with the spark test, although Im going to make my own tester when I get a chance. Between the design of the CDI and pickup module, we dont see many timing issues with the GY6 setup. I know this is a buggy site sorry but its a good gy6 site. Set your multimeter to read resistance (ohms). timing again, Fits completely under the distributor I dont understand what a pin diagram is, where are you getting your voltage reading? 3FOR6U1 document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); 2013-2018 WWW.PUSHMOWERREPAIR.COM.AU RIGHTS RESERVED. For the Wankel powered NSU Spider of 1964, Bosch resurrected its thyratron method for a CD ignition and used this up until at least 1966. My Electric Start Button DO NOT WORK Of course, after a few minutes when I then released the safety bar to stop the mower, although the engine slowed due to the braking effect on the flywheel, the engine didnt stop because id not reconnected the kill-switch wire Doh! Ignition Conversion Kits for Magneti Marelli 2-Cylinder Thank you! This is a brand new out of the crate engine. Now about the 0v on pin 1, that will prevent your spark for sure. Checked another identical new coil at dealerreads 6000 ohms. If the spark is weak it will be very hard to start and run your outboard, You may have a slim chance with some engine starting spray. I was able to determine the CDI module on my wifes Scout CUV was faulty. If you read open, it will keep running through the brake. Yes, I did that. [8], The top of the spark plug contains a terminal to connect to the ignition system. Replacement OEM#: 34443 34443A 34443B 3443C 34443D. Im thinking this means a switch, correct? Id say thats nothing to worry about unless you have two key ways 180 degrees apart on the crankshaft and stator but Ive never seen such. A CDI system has a short charging time, a fast voltage rise (between 3 ~ 10 kV/s) compared to typical inductive systems (300 ~ 500 V/s) and a short spark duration limited to about 50-600 s. I get spark but it is snap, snap, pause, snap, snap pause. No ohm reading downstream of the resistor. But I may be able to be of some help. Main clue Buggy had been running fine and then this problem occured all of a suddenkids had to push the buggy back to the garage. The system could be switched back to standard inductive discharge ignition by the swapping of two wires. The difference between a "hot" and a "cold" spark plug is in the shape of the ceramic tip. 4. If the blower starts briefly it is likely to be a fuel issue. Like some of the other commenters in this website, I have a problem with no spark. So, dont focus on a single item, until testing indicates that item may be faulty. spot-on accurate, Cleaner engine oil due to less unburned fuel, Easy to install - If you can install points, you can install the Hot-Spark my 150 engine starts and idles fine but misses real bad when running at a higher RPM.i have had the carbrator replaced and it is tme same. The coil is a simple device -- essentially a high-voltage transformer made up of two coils of wire. [citation needed]. If you cannot start the car, you need totest the ignition control module. Oil has never been changed, but topped up once (I think). Such charts are useful for general use but are of almost no use in reading racing engine spark plugs, which is an entirely different matter.[why?]. The capacitive-discharge ignition uses capacitor discharge current to the coil to fire the spark plugs. Wrap or connect the other end of the wire to a good grounding spot on the engine (bare metal). I dont know what to do? Heavy detonation can cause outright breakage of the spark plug insulator and internal engine parts before appearing as sandblasted erosion but is easily heard. I also need the expected output voltages for this unit. Just for grins, I dug out the other identical generator and that had spark, but very weak orange spark. The magnetic field of the primary coil collapses rapidly. [citation needed][22] Vehicles using compressed natural gas generally require narrower gaps than vehicles using gasoline. Yes a resistor spark plug should work fine as a replacement, I have not seen one with a resistor so I suspect they are not very common. Hey Dan, Set It and Forget It - Never So where did I go wrong either now or before ? No erosion should be on the surface and the firing points, should be free of rust or corrosion. The pick-up sensor shows good voltage. Is It Bad ? Currently you have JavaScript disabled. I have .252 vAC at #1 / 29.7 vAC at #6 / direct ground at #3 / full continuity at coil from #2 / 0 vAC at coil. A cam in the center of the distributor pushes a lever connected to one of the points. These ignition systems include conventional breaker-point ignitions, high energy (electronic) ignitions, distributor-less (waste spark) ignition and coil-on-plug ignitions. Finally, an ignition system needs a distributor. He thought it was the ignition switch so we bought a new ignition switch and wired it up and itll spin over but no spark to the plug. The coil measures 2.5 K however I cant get a spark. If it does its shorted to ground somewhere. Something wrong with my reasoning? mgh housestaff manual 2022 pdf yummybazaar. kill switch isent hooked up right or is fulting out. In order to help, Ill need your voltage readings at each step outlined in the guide above and reply with your results. Ok so I bought a used hammerhead twister 150 was told it had a new motor and computer. Do you know which Hammerhead 150cc model do you have? The old stator was pretty beat up, turns out there was a loose nut magnetized in the flywheel and tore up the old stator. Primary coil 1.2ohm possible 4ohms (between kill switch and body) if shows 0ohms primary its shorted and there will be impossible to start. Vacuum/Centrifugal-Advance Distributor with 3LUC4-25D Electronic Ignition, HS25D4 4-Cylinder I Also Have To Use A SCREW Driver On The Solenoid To Make Engine Turn Over. With the newly-designed coil, the customary snap is no longer heard nor is it an indication that the coil has been properly installed. The damage that is occurring to the tip of the spark plug is also occurring on the inside of the cylinder. Air-Cooled VW Electronic Ignition Conversion Kit: Includes 3BOS4U1 Electronic I need my motor to get by boat out of the harbor, so what can I do to get it started if, indeed, it is the coil? Solved my ground issue. Have you adjusted your valves lately? Thank you! Delco 3FOR8U1. To make the best use of the fuel, the spark should occur before the piston reaches the top of the compression stroke, so by the time the piston starts down into its power stroke the pressures are high enough to start producing useful work. Then no spark. For a complete catalog of parts, see our webstore. Spark plugs use a ceramic insert to isolate the high voltage at the electrode, ensuring that the spark happens at the tip of the electrode and not anywhere else on the plug; this insert does double-duty by helping to burn off deposits. Industrial Engine Electronic Ignition Conversion Kits Tried it with the new CDI and the old CDI. Have had similar experience with a Briggs engine on a Craftsman mower..with kill wire removed from mower, IDM Members' meetings for 2022 will be held from 12h45 to 14h30.A zoom link or venue to be sent out before the time.. Wednesday 16 February; Wednesday 11 May; Wednesday 10 August; Wednesday 09 November Very old racing engines will sometimes have two sets of plugs, one just for starting and another to be installed for driving once the engine is warmed up. If you dont know anything about starter problems, then its []. So I charged it up. 2300cc Engine New HS45D4 Distributor with Electronic Ignition for 4-Cylinder Lucas wire. Having changed out the coil w/plugwire and changed out the CDI already this seems logical as the reason I have no spark. I have a old Briggs and stratton 8hp (193707-0370-01)and have no spark. Ford (US, with Bosch Larry, please go through the steps above using a multimeter and reply with the voltages you see at each step. Im stumped and got a $2000 lawn ornament just sitting. No spark, good magnets I believe, coil resistance readings are 2.63 K, brand new sparkground (stop) is not touching anything, separated the wire, tried 2-3 positions coil from wheel, cleaned the wheel. sell only what we have in stock. Ignition Conversion Kits for Prestolite Non-Vacuum-Advance Marine Distributors: 6-cylinder What else can I replace? For example, notice the torque recommendations on p. 823 of the 2015 Champion Master Spark Plug Application Catalog. The ignition coil converts the low voltage from the battery to the high voltage needed by the spark plugs. So, your vehicle may stall unexpectedly during operation and will not start again. When Im In NEUTRAL And Press The Brake Tail light Doesnt Light Up . I have a coolsport 250, Im getting fire all the way out the spark plug wire but cant get any spark out of the plug. negative polarity[15] relative to the engine block) because it is normally the hottest part of the plug; it is easier to emit electrons from a hot surface, because of the same physical laws that increase emissions of vapor from hot surfaces (see thermionic emission). I got this buggy as it sits. In essence, these two coils constitute a transformer, in which a small voltage applied to the primary coil can produce a very high voltage in the secondary coil, which can cause an electric spark to jump across the air gap in a spark plug. Buggy continues to run once fuse is blown, but lights etc no longer work. The correct reading changes depending on the coil type, For your 16hp Briggs it is most likely the reading could be different so we are unable to say if the coils are good or bad. I was kind of surfing this site and read all kinds of ways to test Magnetos or electronic ignitions. Ignition Coil (New) = 30VAC, 0 ohms (analog). The side electrode also runs very hot, especially on projected nose plugs. If you have a spark you should try putting a few drops of fuel in the spark plug hole. Starts right up and idles great.