Check continuity between the stator plate, cylinder head and coil mounting bolt. If you don't have ground continuity between all 3 you'll have no spark. Given that youve tried swapping in all the replacement parts, my theory is that the only ground between the engine and the frame was through the cylinder head mount to the frame. When they pulled the mount doing the top end, they broke the last ground between the engine and the frame and thus the coil.
Don't be discouraged, there's probably people watching that are having the same issue with there bike and by watching your video your showing people all the things that it could be that maybe they didn't think of checking, thank you for the great content and videos, keep them comming 🙂
This video is way more interesting because it’s challenging for you. We’ve all been there and it is comforting knowing that even a mechanic as good as you goes through the same sh!t once in a while!
I would most likely look into the wiring. For the year that it is it could have a broke wire from the inside and it can’t be seen. You may have to get a better multimeter and test the wiring and see if you have a open contact somewhere in the harness
Check continuity across the spark plug wire and every other wire involved with ignition system. Could be a wire broken internally, which would explain the bike suddenly not running after the rebuild. I've seen this in my field of work. It's a lot harder to diagnose when the wires are buried in the ground lol
Expectations with old bikes can be killer! I just bought a too-good-to-be-true 1988 RM250 that violently pops in and out of 2nd gear. Keeps it interesting at least.
You will get there. Some times you just need to walk away, and come back with a fresh pair of eyes. Can't believe someone would throw it away. In the UK, they have always been worth good money.
Cool! It also makes you wonder, just how many cool, classic bikes were just taken to the dump, landfill, metal recyclers etc say between 2000 and 2020. Way too many I would think. So good another one is saved. LOL! 🤣🤣🤣 Chupacabra sighting!!!
It’s a ground loop issue.just replace all of the electrical system with good quality stuff. If you have one that runs,use all of it and kill switch. Then when it has spark, change one part at a time to find what is bad. This way it doesn’t cost you alot of money just time. Good luck brother
I was going to say kill switch but I see its unplugged! Just be happy you get to work on and own a stable of big bore 500's! I'd love to find a deal on just one of them!
Would it not be worth checking the kill switch cable itself isn't shorted? I know next to nothing about vehicle electrics but would check that given there's no other obvious problem.
Long time subscriber, i would love to oen that mumber numebr plate with your signature on it Lund! I love uour content. Literally the eacvtly content I'm in to. Your the man! 🤘 Please don't ever stop making these 🔥 videos!
Hey man if you don’t have a power probe you definitely need to get one , you can send ground or voltage where you need it , good luck brother I know you’ll get it
Heck of an effort on this one! I think you're on the right track with grounding. Those late night gremlins are often fixed with sleep! I'm sure you checked it, but I have had issues with the connection of the coil wire where it screws into the coil or the plug boot. Good luck!
You guys are so lucky over there even with road bikes ,I’ve wanted to own a Honda four hundred super four since 1991 ,and I eventually got one last July ,mint import from Italy ,every bit off paper ever gotten with it right down to receipts for oil n filter changes , import docs the lot ,blue beautiful bike price 2200 ,over here in uk in the nick it is in and 19 k genuine mileage ,few month later got an offer on it at a bike meet for 3300 ,now that’s nice . But I’m keeping it ,
Sometimes I run an extra ground from the coil ground to the head, I do that a lot on banshee on high hp stuff, The 87+ ignition is much better, and doing the dual source coil mod is an excellent upgrade. That first stator looks like a cr125, or pre 92 cr250 they are a bolt on, the cr250 ignitions from 92+ need a backing plate mod to fit
I had a grounding issue like that. In my case I cerakoted the engine cases, and didn’t clean off the paint where the stator plate grounds to the case. Good luck!
I’m in the process of rebuilding a yz125 and lemme tell you either the person who rode that bike is a god who never crashed or rubbed boots on the frame, it’s the most durable paint in the world, or it’s been repainted/rebuilt at some point
If you've tried known working (and compatible) components it's probably in the wiring. Obviously ground is a good place to look but I think that's unlikely since you've swapped components so much. Make sure the connectors aren't stretched open too far. This could result in testing fine but not actually making contact. And verify spark plug boot isn't out of resistance value spec. I assumed one was good and pulled my hair out. Coincidentally my meter was giving bad readings and I had done the same thing basically. Swapped out literally every part except the spark plug boot. Parts store happened to be out or I would have replaced that when I replaced coil. Which was my first guess
85, or 86, 85 had issues with the ignition, hate to say it, buy all lectric components, not that much, that should get you going. Ebay is your friend. 😎👍
Check out motorsports n buggies ch ,he’s just started up three ch ,some real nice cr ,s ,125*250*500,and a surprise hens tooth bike ,and some nice cars from the pre 2000 ,s
Bro, i had a 95 xr600r that ran perfect when i bought it, and the next day it would not start. Worked on it for a week, then took it to a shop, and they couldnt figure it out either. What finally fixed it was replacing ALL the wiring front to back. Sometimes you just have to go for broke and replace old wiring!
You've tried working parts so i would check grounds and all wires / connectors for breaks or corrosion etc.. did you change flywheel ? or swap in others?? Make sure where you touch spark plug it grounds to rest of ignition grounds too... easy to not get a good test if the plug is not making a good contact.... i'd clean and put a good ground to plug to eliminate that ..
Try kicking it with the kicker. Ive tried spinning my 500 with a drill and for some reason you couldnt see spark but kicking it with a kicker itd spark. Cant explain it. Just figured id toss it out there for something to try.
Sup man love your videos, noticed you have a thing for big bikes. Anyways I finally had the balls to ride my dads atk 406 2 stroke, scared the f@@k out of me 😂
This sounds crazy but put the cdi unit in the oven at 250 degrees with the door cracked for about an hour. Put the unit close to the door. Cdis wwill fail from slight moistire. Not really any parts to just burn out. Moisture is a demon.
Brother you have lost conductivity between the stator to the case to the cylinder to the frame. I had one not long ago so a similar thing after the cases were painted. Good luck she deserves to have second life
"This dirt bike was thrown away in the trash.............in 2019..............then some guy grabbed it up..............and finally it was just sold to me for $1500" That title would have been a bit wordy, so I understand not using it.😉
I had the same problem with a kx250 and did the same as you and couldn't get it to go had a mechanic look at it and couldn't get it to spark I hope you get it. To go
Found a 125 Hodka combat wombat in the metal pile at the dump. Someone took it spart as i was dumping my load i saw the roller (frame wheels forks handlebars with 3 older snow mobile's on top of it. Sleds were so heavy.I asked a employee to give me a hand. He was pretty negative about. Dude im on a mission.15-20 min later. Found everything but air box boot.all it needed was crank bearings. Sadly. Some asshole who used to be a friend stole it from my garage.
Hey just so you know they sell these things called lights at Like Home Depot and Lowe's so you can like properly light up your Workshop because we can't see s***
My day's brighter just knowing some deserving '85 CR500 found the right guy to look after her. Can't wait to see her done. Happy holidays.
So you didn’t get it out of the dump.. You bought it… Just be honest and don’t click bait
Lighten up Francis. Was headed to the dump when the previous owner got it. Does it really bother u enough to leave a douchie comment?
Exactly
😂
Clickbait is so annoying, the content draws us without the sensationalism
Tell him!!! We don't need click bait...
Check continuity between the stator plate, cylinder head and coil mounting bolt. If you don't have ground continuity between all 3 you'll have no spark. Given that youve tried swapping in all the replacement parts, my theory is that the only ground between the engine and the frame was through the cylinder head mount to the frame. When they pulled the mount doing the top end, they broke the last ground between the engine and the frame and thus the coil.
you still give me a chuckle every time you say "the shop garage whatever'
Problems like this are killers , but forgotten about a week after it's sorted character building. Top video
Don't be discouraged, there's probably people watching that are having the same issue with there bike and by watching your video your showing people all the things that it could be that maybe they didn't think of checking, thank you for the great content and videos, keep them comming 🙂
This video is way more interesting because it’s challenging for you. We’ve all been there and it is comforting knowing that even a mechanic as good as you goes through the same sh!t once in a while!
I would most likely look into the wiring. For the year that it is it could have a broke wire from the inside and it can’t be seen. You may have to get a better multimeter and test the wiring and see if you have a open contact somewhere in the harness
Check continuity across the spark plug wire and every other wire involved with ignition system. Could be a wire broken internally, which would explain the bike suddenly not running after the rebuild.
I've seen this in my field of work. It's a lot harder to diagnose when the wires are buried in the ground lol
Expectations with old bikes can be killer! I just bought a too-good-to-be-true 1988 RM250 that violently pops in and out of 2nd gear. Keeps it interesting at least.
You will get there. Some times you just need to walk away, and come back with a fresh pair of eyes.
Can't believe someone would throw it away. In the UK, they have always been worth good money.
Cool!
It also makes you wonder, just how many cool, classic bikes were just taken to the dump, landfill, metal recyclers etc say between 2000 and 2020. Way too many I would think.
So good another one is saved.
LOL! 🤣🤣🤣 Chupacabra sighting!!!
The later clutches have another clutch plate too. Which is an awesome upgrade
What a Beautiful find, you guys will figure it out!!!
It’s a ground loop issue.just replace all of the electrical system with good quality stuff. If you have one that runs,use all of it and kill switch. Then when it has spark, change one part at a time to find what is bad. This way it doesn’t cost you alot of money just time. Good luck brother
I was going to say kill switch but I see its unplugged! Just be happy you get to work on and own a stable of big bore 500's! I'd love to find a deal on just one of them!
Would it not be worth checking the kill switch cable itself isn't shorted? I know next to nothing about vehicle electrics but would check that given there's no other obvious problem.
Check the flywheel for a broken key way or fly wheel has a weak magnetism . Or crank shaft is broken.
Long time subscriber, i would love to oen that mumber numebr plate with your signature on it Lund! I love uour content. Literally the eacvtly content I'm in to. Your the man! 🤘 Please don't ever stop making these 🔥 videos!
We had Magnesium on our 70's Motocross bikes too...pretty common back then...i raced against those 85 500's. on my 490 Why Zee
🇨🇦🤓👍
Hey man if you don’t have a power probe you definitely need to get one , you can send ground or voltage where you need it , good luck brother I know you’ll get it
"daylight wastings" :) Thanks Clint!
If Santa had a bike it’d be a cr500 🔥 merry Christmas lundmx keep up the good work
I’ve heard of slip ON mufflers. Now I’ve seen slip OFF mufflers.
Sweet bike man!!
Maybe cut coil wire at boot alittle
Dude how the hell you finding these
He "big bore" force is strong within Clint.
Jumper wires are a big help here also.
Merry Christmas bud
Heck of an effort on this one! I think you're on the right track with grounding. Those late night gremlins are often fixed with sleep! I'm sure you checked it, but I have had issues with the connection of the coil wire where it screws into the coil or the plug boot. Good luck!
You guys are so lucky over there even with road bikes ,I’ve wanted to own a Honda four hundred super four since 1991 ,and I eventually got one last July ,mint import from Italy ,every bit off paper ever gotten with it right down to receipts for oil n filter changes , import docs the lot ,blue beautiful bike price 2200 ,over here in uk in the nick it is in and 19 k genuine mileage ,few month later got an offer on it at a bike meet for 3300 ,now that’s nice .
But I’m keeping it ,
Gonna name that year one( water cooled) grampa crusty?
Sometimes I run an extra ground from the coil ground to the head, I do that a lot on banshee on high hp stuff,
The 87+ ignition is much better, and doing the dual source coil mod is an excellent upgrade.
That first stator looks like a cr125, or pre 92 cr250 they are a bolt on, the cr250 ignitions from 92+ need a backing plate mod to fit
That's my guess , a simple bad earth ,
I had a grounding issue like that. In my case I cerakoted the engine cases, and didn’t clean off the paint where the stator plate grounds to the case. Good luck!
, SENSOR ABOVE THE FLYWHEEL . DID YOU TRY THAT ? I CALL IT A PICKUP COIL . GREAT STUFF !
Check the flux capacitor connections.
Indeed.. because where this 500 is going, it won't need roads!
Standard "it ran before it didn't run" story. Looking forward to seeing this beauty running again.
85 500 yes loved those bikes and 250 heck yeah happy holidays I brought an used 2017 kx450f Kawasaki
What did you pay for the 450? And what area?
Flywheel lost its magnetism..
YAMAHA!!! RULES!!!
That's cool your in Reno now. I'm over in quincy
Love your vids
I’m in the process of rebuilding a yz125 and lemme tell you either the person who rode that bike is a god who never crashed or rubbed boots on the frame, it’s the most durable paint in the world, or it’s been repainted/rebuilt at some point
If you've tried known working (and compatible) components it's probably in the wiring. Obviously ground is a good place to look but I think that's unlikely since you've swapped components so much. Make sure the connectors aren't stretched open too far. This could result in testing fine but not actually making contact. And verify spark plug boot isn't out of resistance value spec. I assumed one was good and pulled my hair out. Coincidentally my meter was giving bad readings and I had done the same thing basically. Swapped out literally every part except the spark plug boot. Parts store happened to be out or I would have replaced that when I replaced coil. Which was my first guess
Yea engine mount ground also ? It’s old good looking cases tho .
85, or 86, 85 had issues with the ignition, hate to say it, buy all lectric components, not that much, that should get you going. Ebay is your friend. 😎👍
It's that one thing. I have had the same problem!
Check out motorsports n buggies ch ,he’s just started up three ch ,some real nice cr ,s ,125*250*500,and a surprise hens tooth bike ,and some nice cars from the pre 2000 ,s
There must be alot of barn find old 2T's on the west coast. We don't find alot of those bikes here in the southeast
I’ve literally gotten bikes for free from my town’s recycling center since they know I love to rebuild old bikes
That is awesome!
@@keithtarrier4558 the crazy thing is that most of the bikes I get through them only need new batteries and the carbs cleaned
That year power was so abrupt they spent years taming it down after 85 and 86
That's insane
Great show Clint. You got this. Merry Christmas and Happy New year to you and your family.🏁💯👍🎄
Bro, i had a 95 xr600r that ran perfect when i bought it, and the next day it would not start. Worked on it for a week, then took it to a shop, and they couldnt figure it out either. What finally fixed it was replacing ALL the wiring front to back. Sometimes you just have to go for broke and replace old wiring!
Same pro circuit pipe as i have on my 85 Cr 500!
you have become a cr500 guru. I have been looking forever and they either want 4k not running and in 10 peices or in rideable condition for 8k
Try changing the wire harness you might have a broken wire somewhere
You've tried working parts so i would check grounds and all wires / connectors for breaks or corrosion etc.. did you change flywheel ? or swap in others?? Make sure where you touch spark plug it grounds to rest of ignition grounds too... easy to not get a good test if the plug is not making a good contact.... i'd clean and put a good ground to plug to eliminate that ..
Check the engine kill switch circuit make sure it isnt shorted to itself.
always clean the ground earths first before changing things
Try kicking it with the kicker. Ive tried spinning my 500 with a drill and for some reason you couldnt see spark but kicking it with a kicker itd spark. Cant explain it. Just figured id toss it out there for something to try.
My God that was the longest excuse I've ever heard. 12+ minutes
That is a lighting stator, to add lights.
Sup man love your videos, noticed you have a thing for big bikes. Anyways I finally had the balls to ride my dads atk 406 2 stroke, scared the f@@k out of me 😂
That is the quick release for the muffler delete option
This sounds crazy but put the cdi unit in the oven at 250 degrees with the door cracked for about an hour. Put the unit close to the door. Cdis wwill fail from slight moistire. Not really any parts to just burn out. Moisture is a demon.
1500$ I thought it was in the trash ahahah
Ground is rusted, , clean it kick it, blow a smoke ring, with a ping merry Christmas to you and your family.!
Have you used a good known flywheel just incase its the wrong one
Brother you have lost conductivity between the stator to the case to the cylinder to the frame. I had one not long ago so a similar thing after the cases were painted. Good luck she deserves to have second life
"This dirt bike was thrown away in the trash.............in 2019..............then some guy grabbed it up..............and finally it was just sold to me for $1500"
That title would have been a bit wordy, so I understand not using it.😉
I had the same problem with a kx250 and did the same as you and couldn't get it to go had a mechanic look at it and couldn't get it to spark I hope you get it. To go
Where the finishing of this video or part 2? I looked through the videos but don’t see it.
Maybe a ground point is missing from the frame
I’ll take it!
Which video comes next after this one please? Thanks
Step 1: check the coil resistance surely?
U lucky bloke this,never happens 😎
Did you clean the contact surface of the stator?,clean all ground surfaces & have the Chupacabra "bless" it.
Broken wire to or from the cdi/ coil online the bikes loom, hi from UK, you need to test all of them, d
Found a 125 Hodka combat wombat in the metal pile at the dump. Someone took it spart as i was dumping my load i saw the roller (frame wheels forks handlebars with 3 older snow mobile's on top of it. Sleds were so heavy.I asked a employee to give me a hand. He was pretty negative about. Dude im on a mission.15-20 min later. Found everything but air box boot.all it needed was crank bearings. Sadly. Some asshole who used to be a friend stole it from my garage.
It could be a broken pin on a plug. Or some wire broken or grounding in the chassis.
My money would be on a wiring issue can't tell u how many times I've found broken wires inside of the sleeve that wasn't visible to the eye at first
G’Day mate, try the kill switch. Honda’s are rekniown for issues with faulty kill switches?
Cheers Kev
God damn you can talk. Lol
We don't need click bait..
Coil looks like a China gy6 scooter one
Check the spark plug boot
I haven’t heard you mention the rotor /magneto . If it’s got a crappy magnet u r screwed no matter what
Hey just so you know they sell these things called lights at Like Home Depot and Lowe's so you can like properly light up your Workshop because we can't see s***
Bad ground issue...always start with the easy stuff...broken wire inside a ground cable
Im gonna call bull Schitt . No one would throw away a CR 500 and even if the did
someone would grab it before it landed in the dump.
lets goooo
It can only be 1 of 2 things. A bad wire in the harness or your not grounded. That's it.
I know what's wrong ain't got no gas in it
i have the same orange coil on my scooter thats really amazon
Check each and every connection where lugs or wires join
So we paid $1500 to get it out of the trash
Maybe get a new wire harness
Strip the lume and separate all the wiring
I think it’s a ground issue
You talk to much. I cant watch this. 2vintage is better and shows more.
@LUND MX good content man
i have had several oft he early cdi boxes be intermittanty work