Any TRX-450ER owners ever have an issue of no start, no power, no nothing?

I was riding it fine and then shut it off to talk to something and then nothing. Not even a light.

I checked the fuse, the battery, all good. I think it's the starter magnetic switch. (looks like a solenoid on the battery box)


Any other ideas?

It's GOD punishing you.

Check the ground. Check the positive line coming off the battery . Then keep fallowing that till you find where your hot is missing.

I would say check for spark and compression, and go from there?

I had a similar problem and the parking brake wasn't fully dis-engaged.. Sounds stupid but that's what it was..

Wow a something wrong my quad topic without YFZ in the title

It's purely an electrical/ignition problem. That I'm sure of.

You have no headights , idiot lights no nothing ? Start at the battery check voltage pos - neg now check voltage positive to frame next check at the kill switch on the bars and at the key switch... Where do you not have 12V that is the problem. My guess is something came loose......

its possible that the battery took a crap. if a plate inside cracked or came to contact with another, then youve got a dead short and no go. i however am with mike on this, something is loose. take both cables off the battery, clean and reinstall then give it a try

bike will run with no battery connected. if it died while riding then id check the stator. but you should still have your neutral light. do you still have an ignition switch on the bike? could be possible its unplugged or broken.

As I get older, fatter, and lazier I sure wish I had an e-start some days.......but its crap like this that makes me glad mine kicks over.

Try bump starting it. If it'll run that way then you definitely don't have a stator issue. From there....back track.... first check the coil, then to the CDI, then to the starter, then to the battery cables, then last put a meter on the batt.

Its in one of those Im betting. Its a Honda, the stator is fine

HA! the battery in my predaturd took a big chit on the last right yesterday. worked fine all weekend, then when we stopped for a break, i noticed my coolant over-temp light was on. then i noticed my fan wasnt running, and as soon as i would hit the start button, it would click once and then all power was gone. if i let it sit for a little bit, the lights would come back on but only do the click sound. after 2 or 3 of those, nothing came back. it bump started and ran fine and rode it back to camp without issue but once back, had absolutely no power. stole the battery from my brothers bike......fired and runs fine. i think a plate in my battery shorted against another and that was that

I have done that to a few batteries. it sucks!

my friends does the same thing....he will be riding all day, shut it off, and then nothing. but it bump starts fine and is okay after that. if you figure out what it is let me know.

Do those 450ER's come with a backup kick start? If not might be a wise investment.

What inanimate object did you stop to talk too...

I'm offering $100.00 cash, as is where is..

You haven't seen my buddy's wife...

Battery. Same thing happened to mine. Get a gel filled battery and you will be fine.

update???

Nope. I'll get to it before September/October.

MBH/El Camino man called it. It's the battery.

I just installed a new battery back in January and it only lasted 3-4 months.

The reason why this threw me off so bad is with a volt meter, you read a charge. Put it on the bike, nothing. I hooked up a charger to the battery leads, everything came to life. I'm charging the battery now to see if it will take a charge and if it will fix the problem.

I know batteries can short, but I've never had one short where you could still read voltage across it. Anyone ever seen that?

racing, I break cell's all the time. It will have either 10 or 8 volts enough to let the bike run if bump started or kick started (i have a kicker too on mine) but soon as I shut it off, I get dim or no lights for neutral or what not. its a PITA! make sure your mounting hardware is good for the battery. you charging those whoops does a number on batteries.

Bought a new battery today and bam...back to life. Glad it was an easy fix.

Every thing's all back together now and ready to go. On to the next project.

So the saga continues.

After I replaced the battery and got it started, it won't stay running and it will only start when it is cold. I changed the gas, cleaned the carb, got spark...

And yeah 2 smoke f*gs...checked the valves and guess what...no movement...as expected.

My last ditch effort will be to swap out spark plugs and see if I just have a bad plug.


Any ideas?

Mac, Do you have access to a HONDA manual for the bike? do you have a volt/ohm meter. I would check the resistances of the stator. I would watch the voltage while its running cold till to when It dies once warm. If it quits producing voltage before it dies, its a good chance the stator has high resistance and is failing. usually a manual will have specs. I had a ricky stator do what your describing. that or you have some crank bearings going out. when it gets hot it wont idle due to the load the bearings are putting on the motor.

Well, put in a new plug, swapped CDIs, Rectifier, nothing.

By chance, I'm going to do a compression check and then take a look at the stator.

This is really beginning to piss me off. You never have this many problems with a 2 wheeler.

Call your local shop, tell them everything you've done. See if they have any idea. Also try and post on www.trx450forum.org and kfx450HQ.com (they have aforum on there for other 450's)

or ask someone that owns a 2-smoke! Lmao

I was just talking with a friend...He told me something I did not want to hear...

He was saying with what I have done to the motor...I may have slipped the flywheel or broke the key.

I'm taking the stator cover off now to see if that's the case.

(Today, 10:39 AM) Mac -- I HATE paying people for crap I can do myself

Obviously,you can't do it yourself!

I hope you get gang raped in a San Fran bath house.

Wanna trade for an 05 kick start. LOL

Flywheel is fine and looks new.

I have no clue...

Do you throw tools when you get mad?

Wanna trade, I've got a kickass red wagon. It starts everytime.
Go to those websites, jackass.

So...the saga continues. Freaking compression is low. (30-35psi) So I'm heading to get a new piston and rings.

If this doesn't fix it, you will know by the news live coverage of a SWAT stand off in San Diego with a guy in a clock tower wearing a coozie screaming I HATE YOU ALL!!!

There's a way to check what the loss of compression would be isn't there? I think I've heard adding a ounce of oil in the cylinder then checking the compression, if it goes up, it is the rings.

How did you check the compression with an auto decompressor??

You have to take the decompressor all the way off in order to check it.

You need to adjust the arm on the right exhaust valve until it reaches 60 psi while cranking.

It starts and runs for a second....it dies because it idles down to low and dies or dies because it looses spark?

Turn the idle up, and I mean way up as if you were holding the throttle at 1/3 and tell me how it dies.

Honestly, after all the fixes I hope this last one works. On the other hand, I'm waiting for you to climb the clock tower!

So...the beast lives again.

It was the piston and rings.

So, $188.17 later and all is good. My daughter's BF and I did it in an hour and half.

Dealership wanted $700 and 2 weeks. I'm so glad I stuck with it and did it myself.

I keep going out and firing it up, starts every time.

Could you see a problem?

Compression was about 30 PSI. Probably wasn't enough to suck the fuel/air mixture in the cylinder. Runs great now.

Might want to break it in before you mess up the rings again while patting yourself on the back

De-glaze the nikasil cylinder?

There fixed it for you...

I meant like scuffing or a crankcase full of fuel. What caused the low compression and has that been fixed.

Its a great feeling when that thing fires up like its supposed to huh?

I can see the problem and I've never met the guy!

I hope you get AIDS. I ain't no amateur...




I cleaned up the cylinder before putting it together.





Hillcrest called and they want you and your 2 smoke to MC the next pride parade.





I had this happen on my old CRF 450 after 3 season. It just wore out. The Honda recommended replacement interval is 15 hours...

This is 3 seasons on this bike so that seems to be what I'll consider "my" replacement interval for now on.

So what the hell did you guys spend a $188 on?

Im not sure about the 06+, but a gansta-like forged CP slug for the 04/05 can be had for $160. Couldnt be much more for the later years.

This whole thing is still strange for a 4 stroke. Ive seen worn compression rings that caused shotty performance, but ive never heard of worn rings to the point of where the bike wouldnt run. Especially with a piston that has a static compression of 12:1.