Certified Clinician
Currently Offline
Posts: 77
Likes: 1
Joined: Nov 2, 2010 17:18:26 GMT -6
|
Post by Jeff on Jun 23, 2011 20:39:50 GMT -6
So again, is there anything else I can do to increase gas mileage? (besides adjusting the air flow and also- how do I do that? 2 questions here. Both unknown to me. Air/fuel mixture is controlled by a single screw on the carburetor, where that screw is located depends on your engine and carburetor. If you have the Linhai that screw is on the left side of the carb, gently turn it all the way in until it *just* bottoms out, and count the turns. It's usually about 2-1/4 to 2-1/2 turns. So then you back it out to 2-1/4 turns and after the engine has warmed up, you adjust it in or out until you reach the highest RPMs on your tach. Ideally this is done with an exhaust gas analyzer but you can get it pretty close using the tachometer, or even your ear. Turn it 1/4 turn at a time and wait 10 seconds or so for the engine to respond to the adjustment. At 750 miles the scoot is just getting broken in, it's at the point where mileage will start to improve but it may continue to improve until you get to 1000 or 1500. Keep the tires at the right inflation, or bump it up a bit. I ran mine at 31lbs front and rear. Use 87 or 89 grade fuel. it's a bit early to adjust the valves, you may not need that just yet but if they're out of adjustment that could affect mileage. Stop trying to do burnouts and wheelies, those will hurt the mileage too.
|
|
Certified Clinician
Currently Offline
Posts: 77
Likes: 1
Joined: Nov 2, 2010 17:18:26 GMT -6
|
Post by Jeff on Jun 23, 2011 10:30:16 GMT -6
I ride in a mix of surface streets and freeway in my 33 mile round trip commute and I get a consistent 65mpg. If I take a long mostly highway trip where I use a whole tank (about 200+ miles) I get 70mpg.
I have 5000 miles on it now just recently adjusted the valves for the first time. The intake was perfect and the exhaust was just a bit tight. It does start just a bit easier after that adjustment. The only thing I did with the air/fuel screw was to check where it was set at, which was about 2-1/4 turns out, and I left it there.
BTW, don't go by your odometer unless you know for certain that it is correct. Both my speedo and the odometer are optimistic by 9.2% so I have a spreadsheet that takes this into account when I plug my numbers in at each fillup. Going by the odometer I'm showing I get 70+mpg but my real mileage based on actual miles driven is 65mpg.
I do use the odometer though for keeping track of how much fuel is in the 3.4 gal tank, since my gas gauge isn't even close to accurate and in fact recently stopped working altogether. I've run mine down to just fumes a couple of times to see how many miles I can go on a tank. The most I've gone is 220 *indicated* miles, so when I fill up I write the current odometer reading down and add 200 to it and keep that number in the glove box.
I just put new tires on it front and rear so will be interesting to see if they affect the mileage. Oh, one other thing, lower grade fuel will give you better mpg. I used to burn 91 grade, then went to 89 and saw my mileage jump quite a bit, and finally I went to 87 and the mileage went up a bit more. The scoot doesn't ping, in fact I think it prefers 87, it runs great.
|
|
Certified Clinician
Currently Offline
Posts: 77
Likes: 1
Joined: Nov 2, 2010 17:18:26 GMT -6
|
Post by Jeff on Jun 22, 2011 21:18:41 GMT -6
Anything is going to be a big difference from the junk oem tires. I just put Michelin's on mine last weekend, Pilot Sport SC I think. Mounted them myself too, first one was a bitch, second went a lot easier. Big difference in handling, especially when encountering those big grooves in the road that used to make my scoot pretty squirrelly, not any more, yay.
|
|
Certified Clinician
Currently Offline
Posts: 77
Likes: 1
Joined: Nov 2, 2010 17:18:26 GMT -6
|
Post by Jeff on Jun 22, 2011 20:54:11 GMT -6
Usually a blown head gasket leaks water into the combustion chamber, in this case it seems the head bolts aren't tight and allowing coolant to leak outside the head, but, if you just changed the coolant then it would be yellow fluid. I have no ideal what red fluid would be. On a car, red fluid is transmission fluid but that doesn't apply here. At any rate I would torque the head bolts down and see if it still leaks.
So it turns over but doesn't start, probably should check for spark at the plug. You have quite the electrical thing going on here... I think it it's odd having two yellow wires on the same fuse. All 4 wires on one side of the box should be hot and that's usually red or black/red. Wish I could help...
|
|
Certified Clinician
Currently Offline
Posts: 77
Likes: 1
Joined: Nov 2, 2010 17:18:26 GMT -6
|
Post by Jeff on Jun 16, 2011 18:02:50 GMT -6
Do the instrument panel lights also work? If so, sounds like everything works but the brake lights. That cut harness sounds like it went to an alarm system and someone just cut it out.
Usually the wires don't really change colors from one side of a molex connector to the other side, but I've seen the shade of color vary a lot. Dark red could be light red on the other side. Stripes will vary in color shade and width.
Trace wires from the brake lights back up to the handle bar controls to find the loose connection. Actually you want to find where the two handle bar controls connect to the main harness. The bad connection will be between that spot and the rear lights.
|
|
Certified Clinician
Currently Offline
Posts: 77
Likes: 1
Joined: Nov 2, 2010 17:18:26 GMT -6
|
Post by Jeff on Jun 13, 2011 11:32:08 GMT -6
The TBX260 is supposed to be exactly the same as a Vog, but I can't be certain of the windshield. Having said that, the Vog windshield is identical to a 2003-2006 Burgman 400 windshield, so if you can find a used B400 windshield, it will fit a Vog and should fit the TBX260 if they are the same.
I can tell you that the 1/4 plexiglass bend your own option will not work in this situation. I don't think my windshield is 1/4 thick, and it has multiple compound curves in it. If the windshield is not perfectly formed, and not the correct thickness, you will not get the trim to go back on.
$60 is actually pretty cheap for a new windshield. You could pay a whole lot more than that.
|
|
Certified Clinician
Currently Offline
Posts: 77
Likes: 1
Joined: Nov 2, 2010 17:18:26 GMT -6
|
Post by Jeff on Jun 12, 2011 10:56:51 GMT -6
Old scooters being sold for parts either privately or from a wrecking yard are scooters that have been wrecked, and the windshield usually doesn't survive a wreck.
|
|
Certified Clinician
Currently Offline
Posts: 77
Likes: 1
Joined: Nov 2, 2010 17:18:26 GMT -6
|
Post by Jeff on Jun 7, 2011 9:07:34 GMT -6
I don't think it's the same physical size. You should pull yours out to check wires and sizing/bolt locations, etc.
|
|
Certified Clinician
Currently Offline
Posts: 77
Likes: 1
Joined: Nov 2, 2010 17:18:26 GMT -6
|
Post by Jeff on Jun 7, 2011 8:56:21 GMT -6
On my Vog no lights whatsoever come on unless the engine is running. Turning the key on will power the gas gauge and temp meter, and I think the fan too, but no lights. Should be a simple matter of tying into the license plate light wires.
|
|
Certified Clinician
Currently Offline
Posts: 77
Likes: 1
Joined: Nov 2, 2010 17:18:26 GMT -6
|
Post by Jeff on Jun 6, 2011 17:03:54 GMT -6
TBX-260 is supposed to be the same as the Vog, but I can't be certain of the wiring. On the Vog the Rectifier/Regulator as well as the CDI are under the windshield. Remove windshield and the painted metal part under it. It is a 2 plug, six wire rectifier and you should get it from here www.bmsmotorparts.com/product_info.php/products_id/1191
|
|
Certified Clinician
Currently Offline
Posts: 77
Likes: 1
Joined: Nov 2, 2010 17:18:26 GMT -6
|
Post by Jeff on Jun 5, 2011 11:17:20 GMT -6
Ugh, I may have the same problem. After having all the plastic off it for nearly 2 months, fixing all kinds of little things that decided to fall apart at the same time, I finally get the last of the plastic back on yesterday and tried to ride it. It starts fine, and while it's on the center stand I can rev it as much as I want, runs great. When I bump it off the stand it hesitates for a second then recovers. If I give it any gas at all when off the stand it dies immediately. Can't even go 2mph with it.
Other than checking the idle mixture screw and making sure the manifold clamps were tight I didn't do anything to the carb, though I touched every other square inch of the scooter. I rode it a few times around the block when I had various plastic parts off it and it ran fine. Only when it's all finally done and back together, now I have to take it apart again.
|
|
Certified Clinician
Currently Offline
Posts: 77
Likes: 1
Joined: Nov 2, 2010 17:18:26 GMT -6
|
Post by Jeff on Jun 1, 2011 9:15:55 GMT -6
Sure looks like a Parking Light thingy.
|
|
Certified Clinician
Currently Offline
Posts: 77
Likes: 1
Joined: Nov 2, 2010 17:18:26 GMT -6
|
Post by Jeff on May 31, 2011 16:31:45 GMT -6
|
|
Certified Clinician
Currently Offline
Posts: 77
Likes: 1
Joined: Nov 2, 2010 17:18:26 GMT -6
|
Post by Jeff on May 31, 2011 7:08:26 GMT -6
In a pinch you could probably get them from a Yamaha dealer, though it would no doubt cost more. I also tried Ace but couldn't match the pitch. Never thought of Napa.
|
|
Certified Clinician
Currently Offline
Posts: 77
Likes: 1
Joined: Nov 2, 2010 17:18:26 GMT -6
|
Post by Jeff on May 23, 2011 13:55:28 GMT -6
It was the plastic connector the diode plugs into. When the rectifier mount broke and the rectifier was hanging by the wires the heatsink had touched this connector and one of the two rectifier connectors, melting them just a bit. I had looked closely at both of these connectors already, more than once or twice in fact. The rectifier connector had a pretty good melt point in the side but the connectors inside were spaced wide apart with plenty of plastic between them. The diode connector had just a very minor melt on one side. However, the 2 spade connectors inside are at right angles to each other and very little plastic seperating them. I had looked very closely at this several times and just couldn't see how they could be touching.
Last night I shoved a small screwdriver in there and forced one contact away from the other. Hooked up a set of lights and the battery and the lights did not come on. I forced that connector back to where it had been but could not get the connection to short again. Putting a jumper wire to both contacts made the lights go on. I knew I had found the problem but couldn't replicate it. No matter how much I try to short the contacts, they won't. I might snip the wires and solder spade connectors on to them and reconnect the diode outside of the plastic connector. This thing just hangs off the wiring harness anyway, it doesn't have a heatsink and doesn't bolt to the frame like diodes on the other scooters.
Time to re-wrap the harness and plug everything back in. Then the tupperware party begins.
|
|