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Post by skootnation1 on Oct 28, 2013 2:55:51 GMT -5
Arrrgh... Having a few issues with the mobile app, so let's try this again.... Okay, so I have a 2008 vog 260 and I was riding the other day when suddenly she just loses power and dies on the side of the road. I tried starting her up, but she only whines but won't turn over. Loaded her up in my truck and got her home. I checked the spark plug and it's definitely sparking. I checked the fuel lines and fuel is definitely flowing when I press the start button. She'll whine and I can hear sort of a chugging sound when I try to start her up, but just want turn over. Any help would be appreciated... Thanks!
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Post by rockynv on Oct 28, 2013 4:29:26 GMT -5
Turn over means that the starter engages and turns the engine so you have a bike that turns over but will not start.
Exactly what were you doing at the time of the failure? Riding uphill at 70 with the throttle wide open, cruising along at 45 mph on flat ground, going down hill trying to set a new speed record, etc?
When you turn the bike over without the spark plug installed do you get strong compression when you cover the spark plug opening with your thumb?
You could have a stuck or burnt valve, a burnt piston, a broken timing chain or something more simple. A little more information please.
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Post by trailheadmike on Oct 28, 2013 9:21:09 GMT -5
Always start with something simple I say - all my vog starting and running issues were traced back to a bad connection at the CDI of the brown and yellow wire. Give it a look.
Also, there has been a lot written about 2008 Vog owners who have had the carb diaphragm tear.
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Post by rockynv on Oct 28, 2013 12:04:29 GMT -5
Before you start tearing carbs apart or rewiring verify the compression.
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Post by richardthescooter1 on Oct 28, 2013 13:34:26 GMT -5
I had a bad coil on mine scooter, It had spart but when my scooter got hot it would shut off (just a thought)
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Post by skootnation1 on Oct 29, 2013 16:08:58 GMT -5
Sorry, I just got around to working on my scoot and yes I do have compression. Did the finger test and it had plenty of compression to push out my finger from the spark plug hole. To answer question from before, I was just going 45 mph on flat land when my scoot lost power and died. So i wasnt trying to break any land speed records LOL
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Post by alleyoop on Oct 29, 2013 16:45:14 GMT -5
Since the motor turns over, no broken chain, but lets test to make sure the carb is allowing fuel to be sucked into the intake and the plug is firing.
1. After cranking it without the motor firing Take the plug out and see if it is wet or dry.
a. If WET the plug is NOT firing while in the motor, so then make sure you test that it is firing when HELD to the Valve cover or any part of the motor itself. If the plug is not firing then ground it on the frame and test it there.
If it fires on the frame but not the motor check the ground wire from the frame to the motor without a good ground to the motor the plug will not fire.
If it does not fire on the frame as well then you have a electrical problem, could be the BOOT CAP, Coil, CDI, Pick up coil last but not least the STATOR. Also if the CDI is a DC cdi then it could be the Ignition key not feeding the CDI 12v or the KILLSWITCH is not on the run position.
b. If the plug is DRY then suspect the carb not allowing fuel to be sucked out.
To very take one of the VACUUM hoses off going to the INTAKE MANIFOLD and pour a teaspoon of gas down the vacuum hose while holding it up and it will go straight into the intake. Then put the hose back on and try starting it, it should fire at least once and may start and die. But that will tell you it is a FUEL delivery problem.
If you checked the fuel flowing by taking the fuel hose off the carb and cranking it and fuel is coming out then its the Carb that is clogged.
Time to take the carb off and take out the JETS and make sure you can see daylight through them. At this point the MAIN JET has nothing to do with the no fuel delivery problem it is the PILOT JET and ITS PASSAGE. The Pilots jet passage are right by the BUTTERFLY and they are tiny. If anything got through your fuel filter it could clog them.
So when you do Clean out the PILOT JET passage make sure Spray comes out of the PILOT JETS tiny outlets by the Butterfly.
Alleyoop
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Post by rockynv on Oct 30, 2013 4:04:19 GMT -5
Did you go over a bump or pothole just prior to this or recently have an event of some kind or recently do any service on the bike?
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Post by urbanmadness on Oct 30, 2013 22:00:57 GMT -5
Don't forget the pump and fuel filters....
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Post by skootnation1 on Oct 31, 2013 0:15:19 GMT -5
The sparkplug is bone dry, so I'm going to assume it's the jets... Going to use nail polish to mark the hoses to make sure I put it back together properly and will clean out the carb... Wish me luck!
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Post by skootnation1 on Oct 31, 2013 0:17:14 GMT -5
Quick question though... where is the cdi located on the vog. I have the dual shock version and not the mono shock type.
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Post by alleyoop on Oct 31, 2013 0:55:44 GMT -5
If you have spark it is not your cdi, but you verified that gas is being pumped to the carb but none is being sucked out into the intake. To verify fuel is not flowing out of the carb into the intake pour a teaspoon of gas directly into the intake manifold through one of the vacuum hoses connected to the intake manifold connect the hose back up and if it has compression and spark it will fire at least once.
Alleyoop
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Post by trailheadmike on Oct 31, 2013 12:20:04 GMT -5
The cdi is is right behind the dash. You will need to remove the faring to get to it. Let me know if you don't know how and I'll send you a guide.
Your fuel filter is at the tank outlet on the bottom of the scooter, and there is another shitty plastic filter in-line before you get to the carb. I changed out the filter from the tank to a good one and got rid of the one inline because you don't need it. While you're in there get rid of it and either replace the line entirely or get a connector. Let me know if you need any pics of something. I mentioned earlier that I thought it might be the brown/yellow wire at the CDI, but as I see Alley's troubleshooting advice to you I recall that he walked me through the same procedure when I wouldn't start. I only checked the wire because I fed the fuel directly as he told me and it still wouldn't start. Just remember "In Alley we trust" and nothing can ever go too wrong.
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Post by alleyoop on Oct 31, 2013 14:34:17 GMT -5
HAHAHAHA, "Nothing can ever go to wrong", the only thing that could go wrong are the actual hands on it. Those hands start to mess with this and that and many times make things worse than they really were. As you know just about all of the problems people post are all the same thing. All rides have the same systems, Electrical, Motor, Fuel and CVTs. The trick is to first diagnose which of those systems is causing the problem. With very simple tests you can find that out then test that systems functions to find the culprit. But it all depends on the poster to describe the problem with as much info as possible on what is happening, when it happens and how it acts otherwise we go into pages and pages of asking questions to try and get important information that will shed some light on the problem child. I have had many after pages and pages finally say something that he did or put on or is not on or whatever. You know they messed up but some are embarrassed to say and you have to sometimes throw them a few trick questions and either get the truth out of them or catch them in a lie. I will do that sometimes when I tell them to do something to test knowing what the outcome will be or should be. When they come back with the wrong answer that tells me they did not do the test or did not do what was suggested to do. But you then do not tell them they are full of it (RIGHT AWAY) you try a few more times IF they keep fibbing then you let them have it between the eyes and see if then they come clean. If not I will not respond anymore. Some times you have to be tricky to get the poop out of some folks. Don't know why I always tell people NO QUESTION IS A STUPID QUESTION OR WHAT YOU DID WAS WRONG, everyone asks questions and do stupid things that is how we all learn.   Alleyoop |
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Post by skootnation1 on Nov 3, 2013 1:40:18 GMT -5
Hurrah!! I went ahead and cleaned the carburetor and she fired right up! Actually she runs scored smoother than ever! While I was in there I made sure to check connections were still connected and tightened what was loose. Even adjusted the carb down to stop my wheel from spinning to what feels like 50 miles per hour on the center stand.
I just wanted to thank you all for all the wonderful and insightful advice. I couldn't have done it without you. I will be going on my first scooter run with a group here in central Florida next Sunday and I am so looking forward to it! Once again thank you!
Ken
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..BAD TO THE BONE..
