xingyue 260t-4 problem | Scooter Doc Forum

Scooter Doc

Currently Offline

Posts: 408
Likes: 0
Joined: May 19, 2013 21:37:59 GMT -6

xingyue 260t-4 problem by: jenningsjosh - May 19, 2013 21:53:44 GMT -6

Reply Quote

Post by jenningsjosh on May 19, 2013 21:53:44 GMT -6

I have had my scooter for about a month now and it was running perfect up tell a week ago.I was riding at about 55mph and it started to get sluggish.. cutting in and out and dropping rpms. At first I thought bad gas. But I drained the gas put in new and still has problem. Since this time the performance has gone way way down. I can't go over 30 mph now. When I put it on the stand it screams like a raped ape, 6000 rpm, but as soon as I either apply rear break or put it down, the rpms will not get over 3000. What can cause this? I have changed rear gear oil, oil change, adjusted the valve, and checked rear brake for flaws. None of these have helped at all. Anyone? Please help... this model is a clone of yamaha yp250.

tvnacman PM tvnacman tvnacman's Posts tvnacman's Threads Doc's Anything Goes Currently Offline Posts: 2,739 Likes: 66 Joined: Oct 23, 2010 19:29:21 GMT -6	xingyue 260t-4 problem by: tvnacman - May 19, 2013 21:58:46 GMT -6 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by tvnacman on May 19, 2013 21:58:46 GMT -6 pull the spark plug and have a look at it . report back what you find . John
	Longbo 150cc Prodigy and the Voyager. Buy them as cheap as you can, find the cheapest parts . Ride em hard . They will break anyway . Get scooter parts from tvnacman at www.nycscooterparts.com/ tvnacman.blogspot.com/

jenningsjosh PM jenningsjosh jenningsjosh's Posts jenningsjosh's Threads Scooter Doc Currently Offline Posts: 408 Likes: 0 Joined: May 19, 2013 21:37:59 GMT -6	xingyue 260t-4 problem by: jenningsjosh - May 19, 2013 22:10:11 GMT -6 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by jenningsjosh on May 19, 2013 22:10:11 GMT -6 I will tomm but my guess is white ashy... but will confirm tomm thanks

tvnacman PM tvnacman tvnacman's Posts tvnacman's Threads Doc's Anything Goes Currently Offline Posts: 2,739 Likes: 66 Joined: Oct 23, 2010 19:29:21 GMT -6	xingyue 260t-4 problem by: tvnacman - May 19, 2013 22:12:23 GMT -6 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by tvnacman on May 19, 2013 22:12:23 GMT -6 get some vac line and be ready to replace it . John
	Longbo 150cc Prodigy and the Voyager. Buy them as cheap as you can, find the cheapest parts . Ride em hard . They will break anyway . Get scooter parts from tvnacman at www.nycscooterparts.com/ tvnacman.blogspot.com/

Alleyoop PM Alleyoop Alleyoop's Posts Alleyoop's Threads Forum Admin Currently Offline Posts: 13,815 Likes: 457 Joined: Mar 30, 2010 22:06:05 GMT -6	xingyue 260t-4 problem by: Alleyoop - May 19, 2013 22:24:00 GMT -6 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Alleyoop on May 19, 2013 22:24:00 GMT -6 Adjust your valves, it is probably loosing compression and is why it is dropping rpms. Alleyoop
	..BAD TO THE BONE.. PST150H 62mm BBK, 60mm Crank, 16/37 Tranny Gears............................................... MOW-POWER FROM THE BOOK OF KNOWLEDGE: THE THINGS YOU DO FOR YOURSELF ARE GONE WHEN YOU DIE, BUT THE THINGS YOU DO FOR OTHERS REMAIN AS YOUR LEGACY.

jenningsjosh PM jenningsjosh jenningsjosh's Posts jenningsjosh's Threads Scooter Doc Currently Offline Posts: 408 Likes: 0 Joined: May 19, 2013 21:37:59 GMT -6	xingyue 260t-4 problem by: jenningsjosh - May 19, 2013 22:25:00 GMT -6 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by jenningsjosh on May 19, 2013 22:25:00 GMT -6 I have adjusted the valve...didn't help

Alleyoop PM Alleyoop Alleyoop's Posts Alleyoop's Threads Forum Admin Currently Offline Posts: 13,815 Likes: 457 Joined: Mar 30, 2010 22:06:05 GMT -6	xingyue 260t-4 problem by: Alleyoop - May 19, 2013 22:46:00 GMT -6 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Alleyoop on May 19, 2013 22:46:00 GMT -6 What did you adjust the valves to, because it sounds like the motor has no power once some load it put on it. Alleyoop
	..BAD TO THE BONE.. PST150H 62mm BBK, 60mm Crank, 16/37 Tranny Gears............................................... MOW-POWER FROM THE BOOK OF KNOWLEDGE: THE THINGS YOU DO FOR YOURSELF ARE GONE WHEN YOU DIE, BUT THE THINGS YOU DO FOR OTHERS REMAIN AS YOUR LEGACY.

mike6736 PM mike6736 mike6736's Posts mike6736's Threads Scooter Doc Currently Offline Posts: 1,319 Likes: 5 Joined: Feb 17, 2011 19:36:47 GMT -6	xingyue 260t-4 problem by: mike6736 - May 19, 2013 22:46:11 GMT -6 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by mike6736 on May 19, 2013 22:46:11 GMT -6 Re-check the valves...... Magoo
	.........

jenningsjosh PM jenningsjosh jenningsjosh's Posts jenningsjosh's Threads Scooter Doc Currently Offline Posts: 408 Likes: 0 Joined: May 19, 2013 21:37:59 GMT -6	xingyue 260t-4 problem by: jenningsjosh - May 19, 2013 22:50:04 GMT -6 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by jenningsjosh on May 19, 2013 22:50:04 GMT -6 I will b straight lol.. I did not have feeler gage.. I just opened it up 3/4 of a turn. I need to get gauge sorry...

Forum Admin

Currently Offline

Posts: 13,815
Likes: 457
Joined: Mar 30, 2010 22:06:05 GMT -6

xingyue 260t-4 problem by: Alleyoop - May 19, 2013 22:55:13 GMT -6

Reply Quote

Post by Alleyoop on May 19, 2013 22:55:13 GMT -6

Yea we were born at night but not yesterday..LOL you have to be truthful with us how are we supposed to help if you don't tell us the truth. But we know when something was not done right or not done at all. So be cool BRO and we will help you get your ride rocking and rolling and enjoying the ride.
Alleyoop

..BAD TO THE BONE..

PST150H 62mm BBK, 60mm Crank, 16/37 Tranny Gears............................................... MOW-POWER

FROM THE BOOK OF KNOWLEDGE:
THE THINGS YOU DO FOR YOURSELF ARE GONE WHEN YOU DIE, BUT THE THINGS YOU DO FOR OTHERS REMAIN AS YOUR LEGACY.

jenningsjosh PM jenningsjosh jenningsjosh's Posts jenningsjosh's Threads Scooter Doc Currently Offline Posts: 408 Likes: 0 Joined: May 19, 2013 21:37:59 GMT -6	xingyue 260t-4 problem by: jenningsjosh - May 19, 2013 22:59:32 GMT -6 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by jenningsjosh on May 19, 2013 22:59:32 GMT -6 Lol.. yes that is my intent. .. I am thankful for the help for sure. Do u think3/4 of a turn was enough or should I open it more?

jenningsjosh PM jenningsjosh jenningsjosh's Posts jenningsjosh's Threads Scooter Doc Currently Offline Posts: 408 Likes: 0 Joined: May 19, 2013 21:37:59 GMT -6	xingyue 260t-4 problem by: jenningsjosh - May 19, 2013 23:00:29 GMT -6 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by jenningsjosh on May 19, 2013 23:00:29 GMT -6 Ohh btw.. the bike is a 2008 with only 900 miles on it

Forum Admin

Currently Offline

Posts: 13,815
Likes: 457
Joined: Mar 30, 2010 22:06:05 GMT -6

xingyue 260t-4 problem by: Alleyoop - May 19, 2013 23:02:15 GMT -6

Reply Quote

Post by Alleyoop on May 19, 2013 23:02:15 GMT -6

Set the TOP INTAKE VALVE TO .004 INCHS and the BOTTOM EXHAUST VALVE TO .005 INCHS. Usually the EXHAUST will be the one causing the problems and not sealing after it get hot and if to open will loose a lot of compression and power. When you go get a set of feelers make sure the set has FEELERS that are .004, .005 and .006, some sets start at .008 for cars which is to wide for the scoots.
Alleyoop

..BAD TO THE BONE..

PST150H 62mm BBK, 60mm Crank, 16/37 Tranny Gears............................................... MOW-POWER

FROM THE BOOK OF KNOWLEDGE:
THE THINGS YOU DO FOR YOURSELF ARE GONE WHEN YOU DIE, BUT THE THINGS YOU DO FOR OTHERS REMAIN AS YOUR LEGACY.

jenningsjosh PM jenningsjosh jenningsjosh's Posts jenningsjosh's Threads Scooter Doc Currently Offline Posts: 408 Likes: 0 Joined: May 19, 2013 21:37:59 GMT -6	xingyue 260t-4 problem by: jenningsjosh - May 19, 2013 23:05:50 GMT -6 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by jenningsjosh on May 19, 2013 23:05:50 GMT -6 Ok now here comes my nube skills... I didn't even know there was an exhaust valve? The only one I openes was one on top.. where is the lower one located? Or am I thinking the wrong way?

mike6736 PM mike6736 mike6736's Posts mike6736's Threads Scooter Doc Currently Offline Posts: 1,319 Likes: 5 Joined: Feb 17, 2011 19:36:47 GMT -6	xingyue 260t-4 problem by: mike6736 - May 19, 2013 23:16:59 GMT -6 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by mike6736 on May 19, 2013 23:16:59 GMT -6 You will see the valve cover under the cylinder.... And as Alley says you have to use as Gage, go to the 250 section and see valve adjustments or go to U TUBE Magoo
	Last Edit: May 19, 2013 23:18:42 GMT -6 by mike6736 .........