I have a 1997 honda foreman 400 that had no spark. made sure the ignition coil and cdi was good and checked all the wires. finally I replaced the voltage regulator/rectifier. it has three yellow wires, two of them go to the stator and one of them goes to the CDI. it takes the AC voltage from the stator and converts it to DC for the CDI which charges up the ignition coil and that goes to the spark plug. anyway it sat for over a year unmessed with I took the old one off it tested bad got an aftermarket voltage reg/rect and it fires right up. so if you have no spark on these quads I strongly suggest taking a look at the voltage regulator/rectifer
if you clamp on a amp meter to the wire from the pick up coil i believe it would give you a reading indicating its working i believer, also to the black wire going to the ignition coil primary side. this should be a quick check before tearing apart or purchasing any parts.
I have 30 years working on ATVs and small engines, most often, your better off taking your broken down equipment to an experienced professional. It will cost less money in the long run , they will diagnose the problem and replace only the defective part, saving the customer alot of time and money. But , Koodos to you for fixing your issue 👍
Not in this state. We just have a bunch of parts changer’s that couldn’t diagnose it being out of gas . It cost me a total of 150 dollars of extra parts and the dealers mark there prices up and I’m poor anyways so I can’t afford a dealer. Thank you though.
Man the only place that’ll work on my 2003 rancher 350 es is a shitty little shop and they messed up last time I took it in. My quads been stopping electric shifting about 5 minutes after riding now it won’t start or shift with the key over at all I replaced battery it was dead and it won’t start or shift but headlights are working this four wheeler is kicking my ass I bought her from a retired cop in really great condition but I just don’t know much to fix it myself sadly
@@matthewwhite4799 all my fuses are good I changed my battery and it wouldn’t start after that so I checked spark plug and it was sparking then I put it back in and then it started some weird stuff lol but she’s working again for now I washed her up today and repainted her trim black
i suppose if your VR has a rectifier in it, because you have a AC armature in my guess , it would have to convert to DC, so that is my guess why initially there was no spark with a bad rectifier in the VR
Hey man I'm in the same boat , and I changed cdi box and coil still no spark, mine is a Honda four Trax 300,after your video I'm heading to the garage and check out the wire that you showed to regulator. Thanks a bunch for the tip. Let you know what I find out. Thanks Greg
i dont know what the regulator has to do with the ignition circuit, but i do know it gets a direct feed from the armature for charging batteries i believe.
It confused me to but apparently their was a short in the regulator or broken circuit is the only thing I could think of I tested the regulator but I couldn’t figure out the correct readings and it was the last thing that I couldn’t check correctly so I replaced it and poof it worked I was ready to take a week to think if it didn’t work
Very true but the cdi had power going to it from the battery which was a little confusing apparently it needs power coming from the regulator to cdi too which would voltage regulator I’ve had other models work with the battery but regulator bad. They tried to trick me
it is a three phase reg/rectifier on these quads. it regulates the battery voltage and rectifies the AC stator voltage into DC for the CDI. if you have no spark or intermittent spark a lot of times these voltage reg/rect are the culprit
Am having some issues with honda trx 500, starts and dies just few second, replace gas pump and,spark plug and cleaned the throttle body,put new gas and still having same problem,any help??
Yes it was the regulator rectifier. I should’ve specified a little better and showed the part off of 4 wheeler but I was just glade to get it running considering everybody I talked to had no idea.
I have a 2002 Honda forman 450 it will have spark and it will run good and then It won't have spark at all Do you think that it Could be a voted resistor to just like your issue ?
Man ur a life saver I had same problem and been aggravated with this and I changed voltage regalator and boom I had spark
good deal . I was hoping this video would help a few people. You’re welcome 🙂
I have a 1997 honda foreman 400 that had no spark. made sure the ignition coil and cdi was good and checked all the wires. finally I replaced the voltage regulator/rectifier. it has three yellow wires, two of them go to the stator and one of them goes to the CDI. it takes the AC voltage from the stator and converts it to DC for the CDI which charges up the ignition coil and that goes to the spark plug.
anyway it sat for over a year unmessed with I took the old one off it tested bad got an aftermarket voltage reg/rect and it fires right up. so if you have no spark on these quads I strongly suggest taking a look at the voltage regulator/rectifer
tough on these,we got a 300 4wd 96, no spark.wish us well.waiting on parts.
Good luck 🍀
if you clamp on a amp meter to the wire from the pick up coil i believe it would give you a reading indicating its working i believer, also to the black wire going to the ignition coil primary side. this should be a quick check before tearing apart or purchasing any parts.
Yes sir checked everything thing first and still replaced even though they checked good except for the last thing regulator
didnt have to take a customers quad apart thanks you for the vid
You’re welcome
Thank you so much. Giving you a thumbs up! I need all the help I can get
Glad I could help!
I have 30 years working on ATVs and small engines, most often, your better off taking your broken down equipment to an experienced professional. It will cost less money in the long run , they will diagnose the problem and replace only the defective part, saving the customer alot of time and money. But , Koodos to you for fixing your issue 👍
Not in this state. We just have a bunch of parts changer’s that couldn’t diagnose it being out of gas . It cost me a total of 150 dollars of extra parts and the dealers mark there prices up and I’m poor anyways so I can’t afford a dealer. Thank you though.
Man the only place that’ll work on my 2003 rancher 350 es is a shitty little shop and they messed up last time I took it in. My quads been stopping electric shifting about 5 minutes after riding now it won’t start or shift with the key over at all I replaced battery it was dead and it won’t start or shift but headlights are working this four wheeler is kicking my ass I bought her from a retired cop in really great condition but I just don’t know much to fix it myself sadly
@@jessealdridge9920 always check all you’re fuses first
@@matthewwhite4799 all my fuses are good I changed my battery and it wouldn’t start after that so I checked spark plug and it was sparking then I put it back in and then it started some weird stuff lol but she’s working again for now I washed her up today and repainted her trim black
Mine did the same thing. Once I got it started it ran for another 2 months and then went completely out.
i suppose if your VR has a rectifier in it, because you have a AC armature in my guess , it would have to convert to DC, so that is my guess why initially there was no spark with a bad rectifier in the VR
Hey man I'm in the same boat , and I changed cdi box and coil still no spark, mine is a Honda four Trax 300,after your video I'm heading to the garage and check out the wire that you showed to regulator. Thanks a bunch for the tip. Let you know what I find out. Thanks Greg
You’re welcome
Did you fix the problem?
@@haydenparry5951 yes it did and I’m still running it with no problems even down to 5 degrees and 6 inches of snow on right now
i dont know what the regulator has to do with the ignition circuit, but i do know it gets a direct feed from the armature for charging batteries i believe.
It confused me to but apparently their was a short in the regulator or broken circuit is the only thing I could think of I tested the regulator but I couldn’t figure out the correct readings and it was the last thing that I couldn’t check correctly so I replaced it and poof it worked I was ready to take a week to think if it didn’t work
the reg/rec converts ac voltage to dc voltage, if its bad ?, it wont fire the spark plug, as spark plugs are dc voltage.
Very true but the cdi had power going to it from the battery which was a little confusing apparently it needs power coming from the regulator to cdi too which would voltage regulator I’ve had other models work with the battery but regulator bad. They tried to trick me
it is a three phase reg/rectifier on these quads. it regulates the battery voltage and rectifies the AC stator voltage into DC for the CDI. if you have no spark or intermittent spark a lot of times these voltage reg/rect are the culprit
My cousin burnt the wires from the voltage regulator what could it be? And then of course no spark
voltage regulator went out
Excellent 🎉
Am having some issues with honda trx 500, starts and dies just few second, replace gas pump and,spark plug and cleaned the throttle body,put new gas and still having same problem,any help??
What year ? If you can check your spark and your fuel pressure. Also check the ohms on the coil.
@matthew white 2017 honda trx 500.. this coil is new from polaris,but I will check that too..thanks appreciate it
The problem happened to be the rectifier,was getting weak spark,runs fine now
Good deal yours is fuel injected which has a lot more options to check through. Glad you found problem
Hi can I ask was it the regulator rectifier that was the problem for no spark thanks On your video was a little bit dark
Yes it was the regulator rectifier. I should’ve specified a little better and showed the part off of 4 wheeler but I was just glade to get it running considering everybody I talked to had no idea.
I have a 2002 Honda forman 450 it will have spark and it will run good and then It won't have spark at all Do you think that it Could be a voted resistor to just like your issue ?
Sure could mine did that at the beginning before it completely went out
my foreman 400 did the exact thing it was the voltage regulator/rectifer. its right under the back right fender
never had any luck with the cheapo ebay voltage regulators, OEM HONDA IS BEST
You’re definitely right. Mine is still holding on for now thanks for reminding me to buy oem for backup