My son has rode the heck out of a Eton 70 this last summer and recently it has started dying after it warms up and he hammers down on it. I have cleaned the spark arrestor numerous times which helps a little. I finaly took it all the way out and the power skyrocketed for about 2 days of riding. Now it's back to ******* when it should be roaring. I have cleaned air filter, fuel filter, tried a different grade of oil in it (2 stroker), and tried adjusting the air mixture and replaced the spark plug (which looked fine). Nothing seems to improve it. Bike idles fine, starts fine, and will go slow fine. Sure I could take it to the shop, but then I would be admitting that I needed the $250 "service package" they tried to sell me on the bike when I bought it. The bike has been a great bike for my now 7 year old, but now he eats the dust of the 8 year old girl across the street. Nough to make a guy mad.

What have I missed, there has to be something else I haven't thought of. If anyone has a suggestion I would love to hear it. Otherwise I'll have to punt and take it to the shop and listen to the salesmen jeer me a bit.

Thanks,
Erin
Sandblaster 5 Family.

 

It sounds like the main jet is plugged.
I seen nothing about a good carb cleaning in your post.

Welcome to the ATV Connection forums.[img]i/expressions/face-icon-small-smile.gif[/img]

 

Ok, so my fear of the carb may be the only thing I didn't address. For cleaning is there some kind of spray I would shoot into it or does it have to be torn apart. If it is just an injection I'll try that first. Also to address the main jet issue, I would imagine that would require a carb over haul. Are these things that a tinker (reasonably mechanical) could attempt or if the cleaner doesn't work I should move on to a shop?

Also, anyone have any ideas on the exhaust side? Is there a valve or other restriction point in the exhaust system? This is what I suspect as it is acting just like when the spark arrester got plugged. After I took it out it ran great for two more days then back to dying when its pushed.

Many thanks for your reply. This is a great forum and I intend to spend more time reading as there is a lot to learn here.

Thanks
Erin

Sandblaster 5 family

 

Carb cleaning is a simple thing.
Remove the slide out of the carb (unscrew the top)
Remove carb from machine.
Remove the lil screws that hold the bowl (bottom) on.
Remove (unscrew) both jets and make sure the holes are clean (look thru).
Spray carb cleaner all around,thru the fuel supply,thru the jet holes,etc.
Put jets back in and re-assemble.
I'm not saying it cannot be the exhaust, but that's not a probability.

When the rider presses the gas and it bogs, that's signs of a plugged jet (too much air and no gas).
The obstruction can float around, thus may be the reason it ran after the pipe cleaning. [img]i/expressions/face-icon-small-smile.gif[/img]

 

Someone told me don't bother with taking the Carb apart, just drain the gas then shoot some carb cleaner in. Let it sit, drain and refill with gas. Or they said just put carb cleaner in the gas.

Has anyone tried either of these? I'm not the best carb head on the block, but isnt the float in there plastic? The cleaners appear to be petroleum distillates which can sometimes eat plastic.

Comments?

Erin
Sandblaster 5 family.

 

as lt80 said. Taking the carb off and cleaning it is easy and almost dummy free. I was freaked about it the first time I rejetted. By the time I was done I had spent and hour taking every peice of the carb apart just to see what it does. Shined everything back up put it back together and fired it up! Simple. There is nothing in there that you can break or put out of some obscure finite adjustment. This is a good chance to figure out how this particular little monster eats. Just get a rag and lay each peice on it in order of removal. Cool side note is after that I have been in and out of that and acouple other small carbs with no hesitation. Faced your fears dad, don't let your kid get smoked by a GIRL! [img]i/expressions/face-icon-small-smile.gif[/img] Good luck

Never give into $75.00 per hour shop fees! For piece of mind go to ronniesatv.com and look the micrfiche of your machine so you have a picture in your mind.

 

LOL, I guess that's it, face your fears. I'll give it a shot this week. What could possible go wrong, right? I'll never hear the end of it from my son until I get this thing fixed. Chance to be super Dad. Rough job but somebody has to do it. Thanks for the vote of confidence.

Kowabunga Dude!



Sandblaster 5 Family

 

What LT 80 said carb dirty IMO.

 

Hey blaster how'd it go?

your delema popped into my head last night and I remembered a situation at the track last month with an lt50. Little girl could get it to go but when she romped it would die. We noticed that everytime she would gas it the thing would flood. We would drain the carb and it would happen again. One dad had the bright idea to take the pipe off and look at the opening at the cylinder. Turned out that so much crap had built up at the entry to the pipe she couldn't get any air out of the machine thus causing it to flood and stall. we cleaned it out ad she made the second moto.

 

I think LT80 called it. Pulled the carb out, much easier than I anticipated. When I pulled the bottom bowl off, there was a small clay like ball/bb in the bowl that was too big to come out the drain spout. Just out of curriosity I added some gas to the bowl and the the little ball kind of floats around in it. I can imagine that under operating conditions such as idle or going slow the ball didn't cause much of a problem. When he would hit it and take in more gas it would quickly plug the jet. The ball was about 1/8" in diamter and my question would be how in the @#$^!(# would that get in there? It had to come from the air filter side probably a month or so ago when he went plowing through a "sippi" hole. All I can think is that when I took that air filter off to clean and dry it, it must have gotten in or past at that time? I did inspect the cylinder intake and it looks very clean but thanks for the heads up as long as I have it appart I should make sure its good there as well.

Now assuming I can get it all back together he should be throwing dust on that girl with the 50 soon. I wrote down the order in which I dissassembled it and will reverse the order to put it back together.

One more question out of curiosity. The carb has a black boot or sleeve on the top of it covering what appears to be just a straw like openning. When I follow this "straw" down it appears to drop into the bowl where the gas is? Could this be used as some kind of bowl/float fllush or clean out access? Maybe I could draw the bowl contents out with a syringe? That thinger has to be for something but I'm not sure at this point.

Thanks for everyones help,
Erin

Sandblaster 5 family