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Post by rapidjim on May 28, 2011 7:50:55 GMT -5
First off I will admit that I don't have much experience with 2 strokes. 98 % of what we get it 4 stroke.
Here is what I got. A 2006 Eton, 50cc, 647 miles. Customer complaint, was running great until he ran it out of gas. It will start right and idle all day long and rev up on the center stand. Get on to ride it and when you give it throttle it "bogs" right down, acting like not enough fuel. If you baby it you can get to 25 MPH but, increase the throttle and it bogs out.
Right off I checked hose routing, no issue and changed the filter. Next pulled the carb and cleaned it in a sonic cleaner, and then made sure the jets and all passages were clean and flowing with compressed air. No help. Pulled the exhaust and actually ran worse. Installed a new carb and still no joy.
Any ideas?
Jim/Owner
Rapid Repair
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Post by ustacould on May 28, 2011 9:07:15 GMT -5
Jim,
Clogged tank filter, fuel shut-off not open all the way or clogged. Just a guess, see you
Tuesday.
ed
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Post by edfr on May 28, 2011 11:07:09 GMT -5
Since he ran it out of gas, maybe the Tank outlet is clogged with some goop that was in the tank and is blocking the outlet. Some thing is not allowing the Fuel to flow at a good pace. Could be a partially clogged hose as well something came out of the tank and is blocking part of a hose.
Lefty
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Post by rapidjim on May 28, 2011 11:58:22 GMT -5
Nope Fuel runs out filter with no issues.
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Post by ustacould on May 28, 2011 13:42:56 GMT -5
Sure you would have to say that, is there any kind of spark advance on this type of engine. Is it possible that it's trying to flood the engine instead of starve it.
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Post by pipedog200 on May 29, 2011 6:55:55 GMT -5
Is it possible that when the engine stopped that it jammed up something in the drive train? If it were stuck in "high" that would explain why it runs OK on the stand and bogs when you try to ride it.
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Post by rapidjim on May 29, 2011 10:19:54 GMT -5
Drive train seems to be fine.
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Post by edfr on May 29, 2011 11:30:23 GMT -5
Did you check compression, and or the wheel, bearings, brakes something may be holding it back when weight is put on it or something under the seat is being pinched with weight.
Lefty
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Post by tate on May 29, 2011 17:04:39 GMT -5
Really?
Its a semi clogged main jet.
sh!t lives in the bottom of the tank.
When the tank runs dry the sediment gets in the bowl then gets sucked up into the jet.
Clean the Carb.
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Post by tate on May 29, 2011 17:09:24 GMT -5
Oops didn't read the whole post.
Check the air filter.
Eton are really touchy about having proper century restrictions.
Check the rubber elbows and see if there are cracks
Put a piece of tape over some of the airboxs opening and see if that helps.
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Post by testntune on May 31, 2011 9:02:20 GMT -5
If it runs fine on the stand and like crap with a load then its something in the transmission. Check belt, cvt, clutch, and check the gear oil. Remove and dissasemble everything till u find the culprit.
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Post by ustacould on Jun 4, 2011 12:18:32 GMT -5
So Jim, what was the verdict on this one.
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Post by rapidjim on Jun 7, 2011 12:37:59 GMT -5
Oops didn't read the whole post. Check the air filter. Eton are really touchy about having proper century restrictions. I guess they are really touchy!!!!!!!! Now to what the problem was. As you all know from the original post, this &^%$ 2 stroke idled great, would rev up on the stand but would bog if you tried to ride it. New carb it actually ran worse. After a few hours of cussing and thinking about buying a stick of dynamite, I took the seat back off, pulled the air box and tried to go for a ride. When it bogged I barely stuck a finger into the carb throat, it then ran all the way to WOT, took my finger out and it continued to stay at WOT. When I let off the throttle and hit it again it bogged; finger; WOT LOL. SO I came back and inspected the air box. As I was taking screws off I found that 2 were missing. Everything looked good inside, put the air box back together and replaced the missing screws. SUCCESS!!!!!!! Runs like new! No wonder I don't work on 2 strokes LOL! Sometimes the most simple things can drive you absolutely nuts. In this case a piece of tape wouldn't have worked because it was sucking from the bottom. But, Tate you were right, touchy is an understatement! Jim/Owner Rapid Repair |
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Post by 90GTVert on Jun 7, 2011 13:38:17 GMT -5
Thank you for the update.
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Post by rapidjim on Jun 7, 2011 14:07:44 GMT -5
Thank you for the update. Your welcome! Just got it fixed about 5 minutes before the post. Jim |
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lensam
New Puppy Dawg
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Post by lensam on Jun 10, 2011 11:35:15 GMT -5
Hey guys, I'm a new member here so bear with me. I'm having the same problem on my 05 matrix. I bought mine w/ about 700 miiles on it,(1100 now). and I noticed the airbox is coming apart from the hose(someone tried to silicone it to patch it) and the hose is real hard to get on and off the carb. Is this normal? Also is the gas suppose to flow freely from the tank thru the filter because once its thru the hose it stops flowing. I pumped some compressed air into it to blow the crap back but after a sec its stops again. Also there is no manual petcock on the tank just a fitting w/ a return hose to the carb. Will the unrestricted air cause the lousy response under a load. Thanks for any help because my Caddy is costin me a fortune in gas!!!
Lenny
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Post by litninrod on Jun 10, 2011 21:03:50 GMT -5
Welcome Lensam
You should start your own thread instead of tacking on to the end of another thread, even though your problem is similar.
I have an Eton that I just bought a brand new airbox for. It came with the silicone around the hose, so that's probably not a patch. It is very hard to get it the hose on the carb, so that's normal.
The petcock under the tank has two hoses. One is the fuel to the carb, and the other is vacuum that opens the flow to the fuel hose. If the scoot is not running then the gas won't flow. But if you take the fuel hose off the carb and put it in a jar, then crank the engine the fuel should flow freely.
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lensam
New Puppy Dawg
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Post by lensam on Jun 13, 2011 14:27:00 GMT -5
OK No problem, some forums want you to search things out rather than start a new thread. But I appreciate your response and since we're hear I gotta couple of questions. Is it vacuum that opens the p/c or blowing air? Also does the carb rely on the airbox to be on or should it run ok without it. The store I ordered mine from on Fri. said he runs them all the time w/out the box while repairing and they run fine. I was going to try to repair mine but there isn't much to grab onto with screws. I did manage to cut away some of the opening to get the hose to slip on a little easier and the clamp + mounting screws should keep it in place.
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Post by edfr on Jun 13, 2011 14:42:55 GMT -5
The engine needs certain amount of fuel and air to ignite the fuel. To much air it coming in it will not suck enough fuel out of the Carb Bowl and it will run LEAN. Running without anything on the Carb it will run very LEAN and may cause you problems Also not only that but since it is suction from the engine that draws the air and fuel WITHOUT an Air Filter it will be sucking in Dirt which is NOT good for the engine.
The Vacumm is SUCTION from the engine the SUCTION occurs when the PISTION is on its DOWN STROKE to draw fuel and air for the power stroke.
Lefty
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lensam
New Puppy Dawg
Posts: 3
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Post by lensam on Jun 15, 2011 13:56:54 GMT -5
Thanks but what I was wondering is the petcock, does it release fuel on vacuum or is it forced air through the line? What makes the petcock release the fuel?
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Post by Scoot-Hacker on Jun 17, 2011 19:19:41 GMT -5
The vacuum petcock operates on engine vacuum. When the motors running, engine vacuum is holding the fuel valve open, allowing gas to drain down from the tank into the carburetor.
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