Honda 300ex bad cdi symptoms

Honda 300ex bad cdi symptoms. #6. One way that this can happen over time is if there is a spot on the wire harness Mar 18, 2012 · 13288 posts · Joined 2010. Usually the wire connector at the CDI because on the SX it mounts to the battery box with the wires kinda of bent into it and they break right there. Feb 26, 2011 · 400ex carb on a 300 4x4. Aug 29, 2011 · 8. Jan 22, 2013 · You need to check the stator output to see if it is providing the charging current to your battery, which it doesn't sound like it is now. To get the engine to crank, connect the red wire to the black wire on the wiring harness side of the switch connector. This can occur due to a faulty voltage regulator, a short circuit in the electrical system, or a power surge. Turned the key on and hit the start button and nothing happened. Also buying used is same as getting a dying unit too. Select Your Vehicle - Fitment Guaranteed. There are several causes of this including overheating of the cylinder during resleaving and poor matching of fuel octane to the engine. My fourtrax 300 is a 92 model and will only fire when I first hit the start button then it will not fire anymore. (Fits: 1993 - 2006) This redesigned CDI Box/Rev. 1986 Honda TRX250R Fourtrax. The reverse light comes on after I start trying to crank it, is the reverse switch causing it to lose power to the Apr 11, 2011 · Honda ATV Technical Discussions. Small Business. It happens. 8 volts DC. RacerX. trx450r. Apr 16, 2020 · The outputs are simply not published, but in my experience, the pulse coil output is generally something over 3 volts pp, the stator is something over 35 volts pp, the CDI to coil is around 100 vpp and the coil to spark plug is over 35,000 vpp and the voltages will vary widely depending on make and model. You can refer to the applicable models, pictures and OEM numbers on our page to help you determine your choice. 004 intake/. So maybe that could be my problem on why the quad isn’t sparking? need help and didn’t wanna tear into it with a place to start. If the spark is still intermittent - it will either be; the black wire with the white stripe shorting to ground Sep 29, 2013 · 228 posts · Joined 2011. Jump to Latest Follow Swingarm. I pulled the plug and layed it against the cylinder head. Feb 14, 2010 · I've never hit the revvy on mine either. A DC conversion kit is a good replacement for the stock CDI box as it bypasses the defective source coil. Always start back up and would run alright using 1/4 throttle on the way back home. The spark was weak (small and yellow). If the spart is good, replace the key switch. Yes it can cause the issues you stated Since you tap the CDI and it sparks, it does sound like a CDI issue. He discounted it ($500 instead of $600) for me since I bought the boat from them. cdi should be here this week. After Feb 3, 2016 · Not everything you may need to know but there are other great videos that already go deeper. One of the most impressive things about the Honda 300ex is its horsepower, which makes it a powerful vehicle for any terrain. A lot of CDI talk again lately, thought this would be better for future searches. The are similar to a car battery inside using an electrolytic- just not acid. If it doesn't move and should, use the WD-40. In addition to dischargin’ those capacitors, the box may also influence your rev Sep 29, 2013 · 228 posts · Joined 2011. I've read that the Regulator/Rectifier can cause a lack of spark. Mar 7, 2011 · Redracer. Does anyone know if that is correct. Mods altitude and climate where you live. Apr 9, 2015 · Harryc. Jump to Latest Mar 2, 2015 · Sounds like the carb is either dirty or needs jetting. I started having issues where the bike would intermittently cut out while either riding normal, slowing down or taking off from a stop. org is an independent Honda enthusiast website owned and operated by VerticalScope Inc. Give some more info also please. exhaust glows cherry red from head around 180 degree bend. However, symptoms for this cause normally overlap with electrical wiring or engine compression problems. Thanks again. Slow jet was a 38 which I bumped up to 40, and it had a 110 main mikuni jet with clip all the way Oct 28, 2023 · Coolant leaks – Small leaks in hoses, gaskets, welds or seals inside the Brute Force 750’s cooling system allow precious coolant to escape. Detailed specs on the Honda 2001 TRX300EX atv. 9 in) Information on this page is provided in good faith that it is accurate, but in no way is the data guanteed to be accurate. Especially when trying to diagnose issues on your bike. 0° BTDC: Electrical; Voltage: 12 V: Power Type: DC Rick's Motorsports Hot Shot CDI Box. When cranking the engine, the plug fires once when the Jan 7, 2011 · No it is not - the 300EX has a DC ignition and the 400EX has an AC ignition - put the 400EX on the 300 and it will burn out the unit. I have on a 300ex though. go bit by bit along the wire that will narrow down the point of the brake. Apr 4, 2016 · 06 lost spark are foreman 500 known for bad cdi? Atv was running great then issues started to happen, under full throttle or under load like pulling a wagon or climbing a big hill it would just stall out. Then I put the CDI back on the bike and test for voltage. Order: CDI for Honda XR 250 1992-2004 Part #30410-KCE-671. Detailed specs on the Honda 2007 TRX300EX atv. But they usualy just die. Nov 24, 2012 · That's good to know I can still get spark with failing CDI. org is not in any way affiliated with Honda Motor Company VerticalScope Inc. I just ordered the CDI after further discussion with my Yamaha mechanic. Heat Damage: CDI boxes can be sensitive to heat. ) The CDI box (capacitor discharge ignition module) is the controller that stores an electrical charge and increases the power of the spark at the spark plug. I have the 6 pin cdi with the fan wire. , 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada Nov 5, 2017 · 8 posts · Joined 2016. My problem is that my '03 CRF450R won't start. Up To A 4 Horsepower Gain! Black Box Performance. Jul 14, 2011 · Adam-NLV said: The Vcc clamp voltage according to this data sheet is 16. Dec 31, 2002 · Honda 300ex quistion. Hello everyone, i was wondering if anyone could help me with the pinout of the cdi. Runs okay at 1/8 to ½ throttle. Let's fix the problem. Like. Jul 19, 2018 · The basic CDI system is a trigger mechanism, coils, and a box, often black, with capacitors and other circuitry inside. Greg. 004 exhaust (I have been a cnc machinist for 20years so I know my way around mechanics quite well) Just really didnt want to tear motor all apart if I dont need to. In addition to dischargin’ those capacitors, the box may also influence your rev Jun 9, 2017 · CDI stands for capacitor discharge ignition. Pull the CDI out of the oven and let it cool. Both the neutral switch and reverse switch are NO - reverse is closed (connected to ground) when in reverse and the neutral switch is closed when in neutral - neither has continuity to ground when in any forward gear. 028 in) Pulse Generator Peak Voltage: 0. I’m also not getting The neutral or reverse lights to light up. Front Wheel Travel. 7 V minimum: Primary Coil Peak Voltage: 100 V minimum: Initial Ignition Timing: 17. You can purchase this directly from your local Honda dealer and save money. The four wheeler has a big surging problem. Sounds like a bad box. The 1989 thru 1993 2 and 4WD used part #30410-HC4-770. It is a sturdy machine and can with stand and go through a lot of stuff. i tested everything as per the manual and everything is reading back to the cdi-as continuity and ohms goes. Way more to come. #1 · Jul 8, 2020. Ground the connector and oil light should come on. Confirmed when grounding the plug to the head. 0° BTDC: Full Advance Ignition Timing: 33. tested the stator and pulse generator and had way more resistance then the manual said was allowable so I bought a new one from royal distributing ( Chinese unfortunately Honda discontinued them) and put it all back together checked the spark and still nothing Jan 31, 2016 · 4. Dec 1, 2010 · My first question: why do the aftermartket cdi boxes go bad so aften? Detailed specs on the Honda 2005 TRX300EX atv. It looks like the black wire with white strip that goes to the cdi burned up where Feb 15, 2013 · Here 2 help. 6-0. 95. Previous owner said noise was not there when bike was last run. I have a 86 trx200sx its having odd troubles. So I have read that a few people have run a 300ex Feb 26, 2007 · Thanks [/b] When a CDI goes bad it is often due to mechanical failure triggering an electrical failure. Tore apart keihin carb and put a rebuild kit on it. Kawasaki bayou 300. An Activa with a malfunctioning CDI unit refuses to start at the start of the day of use. Repair & Maintenance May 25, 2016 · 2006 Green Honda Foreman 500 - Viper Elite Winch 2004 Yellow Honda 250ex - Grandson's Bike 1971 School Bus Yellow "Spaghetti" Harley-D Sprint 350 1972 Candy Yellow Honda CL100 K2 1972 Candy Jet Green Honda CB500 1973 Mighty Green Honda ST90 K0 1974 Mars Orange Honda CT90 K5 1975 Topaz Orange Honda ST90 K2 1976 Shiny Orange Honda CT90 Dec 3, 2011 · Recently got a 94 300ex as part of a trade. bad gas can also do this. The bike won't run, difficult to start hitting tapping the CDI may temporarily cause it to work. Replaced cdi box with 2 other boxes, one used and one To test the CDI box for an ATV, you use a multimeter to inspect the fuses, ignition switch, ignition trigger coil, electronic module, and check for loose wires. So I've been looking them up and almost all listings specify 1988 through to 1993. May 9, 2011 · Is there any way to tell if a CDI box is bad? I don't have the option of swapping out one short of buying a new or used one. The recommended operating voltage is +20v DC. Well I'm away from home working, and when I get home in a few months I'll be putting the new web cam and hardened rockers back together on my 300. Length, horsepower, torque, electrical specs, we Jul 5, 2017 · As vicxr suggested, borrow a known good cdi and try it as well, just to eliminate it as a issue. Jul 18, 2010 · Honda ATV Technical Discussions. Length, horsepower, torque, electrical specs, we Jul 10, 2010 · All ready adjusted valves. Once it gets into that no start loop, pull the plug wires one at a time, and (while cranking) test for spark to a ground point with a spare spark plug. org is generated by its users. I thought the problem was in the carburetor, but after going through the carb I checked the bike for spark. The parts look the same and will plug into the wiring harness, but they are different even though they cost the same. Buy a spare they are cheap and they are better on a newer model like yours. Critical Note: Sep 25, 2009 · Posted September 25, 2009. Might be your ignition coil or stator. I just got in a 1997 Honda 300ex on trade that has no spark it turns over fine just no spark. Come back later, maybe get a few sparks again, then nothing. Blocked radiator – Mud, debris, and vegetation can block air flow through the radiator. So my 87 Honda trx 250R lost its spark. Previous owner said it had a BBK over 60 in it and it has an fmf pipe. 02 300ex problems. My motors just to old to be doing that. 40-R18A. Hope this helps some. One way that this can happen over time is if there is a spot on the wire harness that is Jun 9, 2017 · CDI stands for capacitor discharge ignition. Jan 8, 2015 · Purchased a non running EX for my sons first quqd and have replaced the entire electrical charging system stator, pick up, added aftermarket CDI Box with additional advance and rev limiter, hot coil, clutch, timing chain, has uni filter and full FMF pipe and silencer, exhaust with stock carb with factory set pilot, 38 slow and 140 main. The unmodified XR250 box will give you about 800 more rpm on top and a faster ignition curve. Exactly right test the loom and as you test each wire give them a wiggle if you have a broken wire the wiggling should find it. The wire haranes can also be acting up; broken or frayed wires, bad connectors, ect Dec 1, 2010 · trx450r. It increases the overall RPM limit over the stock box Crayjay. I may go that route. When trying to start it, it fires once but won't run. The 1988 model TRX300 2 and 4WD used part #30410-HC4-003. Pull the CDI off the bike. ) May 8, 2020 · Crayjay. #10 · Apr 9, 2015 (Edited) I like to keep it simple. CDI symptoms and testing. Sep 21, 2011 · I've replaced the CDI, pulse generator, stator, spark plug, and ignition coil. Full Set - 3 Coil over Shocks Compatible With Honda Sportrax 300EX - TRX300EX 1993-2006. Mar 3, 2012 · 300ex running bad. Someone suggested that Honda has updated the counter shaft sprocket but I have a 2018 and mine is the thin style. 7 mm (0. It is covered by a thin metal plate with one 8mm bolt holding it on. Nov 20, 2022 · There are several potential causes for a CDI box to go bad: Electrical Overload: Excessive voltage or current can damage the CDI box. Ok, so i installed a new 400ex carb with 152 main and a 42 pilot on my 300ex last week. Kit increases 1,000 RPM over the stock. Capacitors have a limited life span. This 1998 Honda Fourtrax 300 ATV has problems with the cdi catching on fire after riding for a little while. And we can give you a good starting point for jetting it properly. Turns over, and can sometimes get it to fire for a second, and then nothing. ( 29 reviews) Item: 324927. The manual will show you how to test it, which is pretty simple. May 30, 2017 · The CDI units are different. +3 swingarm. Yeah, according to the wiring diagram, the black and Mar 23, 2014 · 1999 TRX300EX cdi pinout. Plus, its fuel efficiency ensures that you can ride longer without having to refuel. . Pay in 4 interest-free installments of $43. The black wire with white stripe, is the main ignition wire. Steve, im going to head out to the shop and take a look inside the harness in that area right now. I am assuming this is to allow it to act as if the kill switch is to the run postion. Repair & Maintenance May 17, 2021 · Item description from the seller. $42. I get intermittent spark. [i checked Jun 11, 2015 · Troubleshooting kill switch on a Honda ATV (93 TRX300). 6604 posts · Joined 2009. 5282 posts · Joined 2014. May 23, 2016 · If the ignition switch itself failed, you would likely have no electrical contact when you turned the key (no lights, no gauges, starter etc. It seemed as if i was pressing the killswitch. Jan 27, 2008 · Out of the 6 or so SX's I had, the failure was never the CDI. NOTE: the 93 to 06 TRX300EX alternator is 3 phase and uses a full wave bridge rectifier - it may be possible to install a single phase half wave rectifier and still charge the battery, but it is more efficient to utilize the 3 phases available. I have replaced the spark plug with the correct NKG, replaced the coil with another known good used one (and tested, both the primary and secondary on both, both are good), the pulse generator, fuses, and wiring all tested good. When turning over, I get a couple sparks, and then nothing. Backfires like a freakin' cannon through the exhaust when it does fire. After about 10 seconds smoke started rolling out from under the front fenders and it smelled like electrical burning. The CDI really cannot be checked with certainty, best to replace with a known good OEM. That is the sign of a failing CDI box. If you have spark at the end of all (4) wires, move on to fuel or air. Tried brand new plug, and another coil I had on the shelf- still the same. Sometimes water gets into the electronics somewhere (even on models that are "potted" with ceramic or silicone) and either corrodes or shorts the electronics. If this were to fail, it usually results in no May 1, 2010 · Sounds like you have a weak spark. The trigger tells the box to fire, the box determines when to fire which coil with the capacitors, and zap goes the spark plug, ad infinitum. It has been running like a top then started to have a big surging problem where it surges and basically falls on its face and has almost no power. #1 · Nov 5, 2017. My 300ex just won't come alive this spring. I have a 2015 XR650L with 3k miles on it. #9 · Mar 18, 2012. #2 · Mar 8, 2011. 95 – $210. I have owned one for 1 year and still have had no problems. Other members, add what you know so we can all turn back here as a reference point. 99 with. Also Oct 9, 2017 · Trx 300 CDI interchange & mods. Make sure you have some good fresh gas in it. Aug 30, 2011. $22900. It appears to be a problem with the CDI. At times many selfs and at least 40-50 kicks could be Jul 1, 2012 · Honda ATV Technical Discussions. #2 · Mar 27, 2022. 024-0. I discovered that quickly switching the kill switch back and forth repeatedly from 'run' to 'kill' would cause the engine to hit once or twice, and often it would eventually catch and start, after about 30 seconds. Well the other day I go out to take a look at it. My understanding so far is that gen1 and gen2 wiring harnesses can be used with gen1 and gen2 CDI’s. When I try to push the throttle all the way open it feels like I let go of the throttle even though I'm holding it open, then it revs back up to 50%, and then drops off again. Disconnect the key switch from the wiring harness. ( it was still a little lean ). May 7, 2011 · The biggest culpret of problems on the 250R ignition system, are the connectors in the system. Hey Guys, Just wanted to share my experience here in hopes it may help someone in the future. Bought a used but tested cdi- still 2 days ago · How to test cdi box with a multimeter is an important task to learn. Oct 5, 2012 · 1986 trx200sx possible ignition troubles. I have a manual and it explains the colours of the wires but does not show what wire goes to what pin. For about a year, my ATV would intermittently crank but not start. Repair & Maintenance. owner of the bike replaced the run/stop switch, i replaced the pulse generator and checked all wires and connections. If I hold it at around 50% it runs just fine. Ignition CDI Rev Box. 30 years is average, some longer, some less. Chemical breakdown is the issue. 7 in) Rear Wheel Travel. Low coolant levels reduce the system’s ability to absorb and dissipate heat. League City, Texas. It has more than enough power for my off-road riding. **In Stock & Ready To Ship**. Gen3 can’t be as the plug is completely Jun 29, 2016 · as for NOT starting, , bad battery,m bad starter, or that can be a lot of things, bad plug, from bad CDI/ carb issue? bad fuel, low compression poor spark? Jul 19, 2011 · Many aftermarket CDI boxes sold for the 400EX are actually stock Honda XR250R boxes. Nov 10, 2019 · Buy Ignition CDI For Honda TRX300EX TRX 300EX ATV 1993-2006 Fourtrax 30410-HM3-003: Ignition - Amazon. You pull them apart & they look good, but 9 times out of 10 they are not connecting with each other. com FREE DELIVERY possible on eligible purchases Rev Box - Honda TRX 300EX (07-09) $175. Feb 3, 2016 · Not everything you may need to know but there are other great videos that already go deeper. It has a stock filter all stock engine wise. Even if a NOS part, capacitors age if used or not. Nov 15, 2009 · 52. Anything above will destroy this little chip! Running and engine revving the bike w/out a battery will exceed 20 volts and therefore destroy this CDI unit. It's very unpredictable and kept getting worse to where now it doesn't run at all. Posted May 8, 2020. In addition, our best re-mapped built-in timing curve can add huge horsepower to your machine. It was almost impossible to start I had to pull start it. The bike is hard too start. Welcome to the forums! Jan 24, 2018 · I put a 93 motor on a 99 model frame,so that said will my 99 cdi work the 93 stator on the motor,I did get it to start for a second,but it won't stay running,would you think I need to put a 93 cdi in it where it's a 93 motor on 99 frame I was thinking it's the cdi that keep it from running,I do have a green neutral light and it will just run Aug 28, 2023 · The CDI issue has very distinctive symptoms and can be very easily diagnosed to target its malfunctioning if such issues are faced. 4v at the front coil. Apr 8, 2019 · 01 300Ex- no spark. I did swap out the ignition coils with #1 and #2 and the problem stayed with the #2 cylinder. Dec 13, 2009 · i am experiencing the exact same symptoms of 1 spark then nada. Thank you to my 2012 Sponsors: Dynamic Graphics, Inc. Last Saturday I went riding and it rode great but at the end of the day I started it to ride back to the trucks and it was running like crap. If you are looking to swap out your stock CDI box, the Big Gun Over Rev Box is an affordable alternative to highly-priced OEM replacement boxes. There doesn't seem to be an easy way to test the CDI for sure. It takes a pulse of voltage passing through the CDI box to fire up the Apr 14, 2012 · Here's a little background: I am getting no spark. This time I get 10. 1994 Fourtrax 300 4X4. I recently took the carb apart and cleaned it, put in new gas, new spark plug, changed the oil and put on a new air filter (a CDI: CDI Identification Mark: CI632 (HM3) Spark Plug: DR8ES-L (NGK) X24ESR-U (Denso) Spark Plug Gap Max: 0. tested the stator and pulse generator and had way more resistance then the manual said was allowable so I bought a new one from royal distributing ( Chinese unfortunately Honda discontinued them) and put it all back together checked the spark and still nothing A CDI box works via the voltage from your motorcycle battery, and the electrical load discharges in one operation, starting the ignition and combustion processes. The capacitor can ignite without a battery connection, and there’s a built-in capacitor for kick-starting. I'm not sure what to think now. May 2, 2012 · I have a '99 trx 300ex that starts right up and runs great. 5 inches in the back and 8 inches in the frontWarrior rear shock and z400 front shocks with custom brackets. Ok guys I need some help fast the busco trip is coming up and I want to go. Billy. 99. 171 mm (6. Bad ass 87 Banshee '03 z400(^its bitch) Im hoping the the CDI isnt going out. My bike will not increase It starts/runs great but headlights get very dim when RPM is raised. If the box is not adequately cooled or is exposed to Mar 16, 2011 · 400EX Head studs will pull the threads loose in the cylinder anytime that the cylinder gets too hot breaking down the aluminum. Dec 14, 2022 · About this item Compatible Models:For Honda Sportrax 300 TRX300EX 1993-2006 Manufacturer Part: 30410-Hm3-003 Package: Igniter CDI Box*1,Ignition Coil*1,Spark Plug*1 Tips before Purchase: Please carefully check whether your model is applicable to our products before buying. 170 mm (6. I just replaced a stator on my Yamaha and it was a piece of cake. #2 · Feb 15, 2011. Check your purchasing power. 200 mm (7. Clean that connector REAL good as well as all the others. Re: Bad CDI question - Yamaha 1999 C90. (etc. if i cycle the run/stop switch it will spark 1 more time then nada. Now I'm currently running a stock carb with a 142 main and needed to increase the slowjet. #1 · Sep 29, 2013. Race cut fenders. Add to cart. Content on trx450r. The bike sat in someones back yard for about 5 years with bad axle bearings. #4 · Apr 6, 2010. The plug had only been used for maybe 5-6 rides, was new last year, but tried a new plug and no help. Cutting out. I pulled the rectifier it has a connector with 3 yellow wires, 1 green wire, and one red wire. With its top speed of up to 65 mph and reliable tires, this ATV can tackle any challenge with ease. Despite usage of all tricks in the book scooter doesn't start. 17. If it shouldn't move and does, use the duct tape. We would like to show you a description here but the site won’t allow us. #Honda, #CDI, #Problems, Jul 14, 2008 · ThumperTalk. Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!! You only need two tools in life -- WD-40 and duct tape. 12v+ goes to the light and from the light to Apr 6, 2010 · 23587 posts · Joined 2009. 5302 posts · Joined 2011. 1991 Trx250X Custom exhaust,K&N jetted,widened 7. I actually call a local dealer, and was told that if I have spark the CDI is still good. Replaces OEM# 51400HM3A01, 52400HM3004, NOT For Fourtrax 300. I also got a new full fmf pipe and header system along with a UNI filter! It ran great all day today while i was riding and jumping in a wide open pasture and around my neighborhood on the street. See a video about putting the CDI in the oven at 300 degrees for 10 mins to try and drive the moisture out so I bake the CDI in the oven. Location: Lebanon, Connecticut -- Good 'ol US of A! My 2001 XR650L has a strange intermittent spark. Swingarm. Bike started and ran, but would not idle and did not have much power on top end. Length, horsepower, torque, electrical specs, we have it all! May 29, 2023 · Top Speed. I decided to hit the trails behind my house which Jan 31, 2016 · 5. Nov 22, 2012 · Trx 300ex. 23587 posts · Joined 2009. Detailed specs on the Honda 1996 TRX300EX atv. Went to fire up the 4 wheeler today. Add To Cart. . Length, horsepower, torque, electrical specs, we have it all! Feb 15, 2011 · Helmut. Was running poorly above ½ throttle. It rides great as well until it hits approx 50% throttle. The kill switch is missing and after looking inside there are two wires (black/white stripe) are twisted together. The neutral light sensor or switch is located at the bottom, right side of the engine, behind the foot peg. Caltric Stator & Caltric Regulator Rectifier Compatible With Honda Trx300Ex Sportrax 300Ex 93-06 & Ignition Coil. Honda TRX300EX. Call the company you bought it from and tell them it is cutting out. Should be 10KOhm thru the center pin and body of the sensor at 75F. Oct 4, 2020 · A bad source coil in the stator causes the CDI to stop running. Pull the right footstep off to make access easier, then the cover, then the connector. Feb 5, 2019 · ThumperTalk. A factory CDI is around $145, and I found a "Big Gun" rev box on Amazon for $114 shipped. I have replaced the CDI box, Coil, sparkplug, checked wires and ground. Mar 27, 2022 · Here 2 help. Jul 8, 2020 · 2 posts · Joined 2020. Is there a simple test (with multi meter) to determine if regulator/rectifier on Honda 300 Fourtrax is bad? I was told that battery voltage will show slight increase when RPM raised to 3000. Spark issue- if it sits for a bit I seem to get a rotation or 2 of spark, and then no spark. cut solder and shrink wrap the wire at the Oct 16, 2017 · Check the sensor w an ohmeter like the service manual says. When I measure the resistance across the CDI terminals as the manual Jun 4, 2019 · Hey guys I have a 2001 300ex that lost spark, or mostly lost spark. Feb 26, 2007 · When a CDI goes bad it is often due to mechanical failure triggering an electrical failure. The reverse light should still work. FREE delivery Thu, Jan 11. The picture below shows, both the neutral and reverse switch, without the metal plate Honda ATV Technical Discussions. $6380. If there are any mistakes, please contact me. lq oy db zp qv js ep tn tc hy