Honda SGX Sky 50 - Fuel Problem By 1pkryan (Read 6,785 times)

[JR]

Mar 29, 2015 8:32:33 GMT -6 1pkryan said:

Okay, i did have it all running nicely but now it's like it wants to go but it don't move the wheel. Wheel is not locked can spin if freely with my hand.

Iv'e cleaned the carburetor out 2 times all passages and jets are clear so wasn't sure if my question below is connected and shorting something out or if it's normal.

Also quick question about spark plug boot, if i kick bike it makes a spark like noise without the spark of course is this normal or should it only make noise with spark when i hold it to cylinder head? Also Sparks when say 1 inch away from where the exhaust connects to.

Thanks for the all help so far.

[OFF TOPIC]:
jr
Did you find an english wiring diagram of that dutch diagram? Think i have found a english 1. Will upload if you haven't got/found 1.

Sounds like you may have a broke belt or clutch problem? Need to open up the CVT. On the spark it should show a nice bright blue spark when grounding the plug against the engine and turning it over.

Videos on how to check for spark:

thescooterprofessor.proboards.com/thread/4167/electrical-check-spark-tester-method

No I never did find a English version of the diagram and would love to have it!

Thanks

[1pkryan]

Sorry forgot to mention, i opened up the CVT before i posted belt was fine, clutch looked like it had colored somehow(OIL?) maybe. Was multicolored like you get with exhaust cans lol... Don't think that matters though, clutch does engage the back wheel when moving with my hand, which suggests it's okay i think?

I get a bright blue spark when grounded to engine, just wasn't sure if it should make noises when away from metal contact.

It's ticking over fine, just when you rev it nothing happens apart from hearing idles go up / revs up.  Took spark plug out seems quite oiled up.

Before all this happened it was fine, i took throttle off to change the tube, it opens and snaps back shut so i think i put it back okay but probably worth a mention.  When i do rev it, it does seem to be low rpms.

EDIT: There does seem like a-bit of play on the flywheel, which indicates a sheared woodruff key and throwing the timing off, does this seem a plausible?  Will have to wait till i can get it off though as i lent puller to a mate...


Took flywheel off, checked the woodruff key and it's fine so ignore above.

[Wiring Diagram]:

[1pkryan]

It seems to be sparking from throttle cable to frame or frame to throttle cable, could this be cutting rev power? Any ideas what would cause this seems bad grounds? shorting out etc... but stator is grounded to frame and i think there is a ground going to a resistor near battery.

[JR]

You've got a bad coil wire or another electrical source that is open or damaged, you should have no spark to the throttle cable. Time to find the bad spot causing this. The discolored clutch indicates excessive heat and something slipping, need to see if the clutch pads are glazed over, if so then time to sand them.

[1pkryan]

Thanks JR, i will take the clutch pads apart and get to work with the multi-meter tomorrow. Would this cause no revs / low revs no power though?

[JR]

Mar 31, 2015 14:16:09 GMT -6 1pkryan said:

Thanks JR, i will take the clutch pads apart and get to work with the multi-meter tomorrow. Would this cause no revs / low revs no power though?

Highly possible especially if it's the coil or spark plug throwing fire, check for a bad spark plug cap or a cracked spark plug too.

[1pkryan]

Will do JR, thanks.  unfortunately, my multi-meter has broken somehow not showing anything on LCD display apart from a dot... Ordered 1 from ebay said will be here by the 9th so bare with me please.. Sorry.

[JR]

Apr 1, 2015 10:55:11 GMT -6 1pkryan said:

Will do JR, thanks.  unfortunately, my multi-meter has broken somehow not showing anything on LCD display apart from a dot... Ordered 1 from ebay said will be here by the 9th so bare with me please.. Sorry.

No problem fully understand and BTW thanks for the diagram! You wouldn't have the English version of the manual would you?

JR

[1pkryan]

No problem JR, your welcome. Unfortunately i don't, Found that diagram by chance browsing all sorts of crap on google images lol... If i find a complete manual i will post it here for you though.

Okay i have received my multi-meter. Not 100% sure what next step to take to be honest. It has a beep feature on this 1 so do i put black probe on frame then touch end of each wires on wire harness and if it beeps say when red probe touches green wire that is good because it's ground, but if it beeps on blue(for example) that is bad etc?

Looking at diagram, stater motor is grounded, So if black probe is on frame and i touch white and red wire with red probe and it beeps that is good?

Thanks.

[JR]

Apr 9, 2015 10:49:43 GMT -6 1pkryan said:

No problem JR, your welcome. Unfortunately i don't, Found that diagram by chance browsing all sorts of crap on google images lol... If i find a complete manual i will post it here for you though.

Okay i have received my multi-meter. Not 100% sure what next step to take to be honest. It has a beep feature on this 1 so do i put black probe on frame then touch end of each wires on wire harness and if it beeps say when red probe touches green wire that is good because it's ground, but if it beeps on blue(for example) that is bad etc?

Looking at diagram, stater motor is grounded, So if black probe is on frame and i touch white and red wire with red probe and it beeps that is good?

Thanks.

By the diagram the R/W wire goes to the starter and if you have tone in this instance it would mean the starter windings are good and a tone would be correct.

The ground on the diagram for this scooter is Black/White B/W so if you put either probe on this wire and touch some of the other wires and you get a tone you may have found a short.

[1pkryan]

Thanks JR.

I have a B/W going to ignition and CDI like the diagram but i don't see the main ground with the the ring any ideas where this would be? Assuming mine is the same. Only thing i have seen to do with ground and have rings are both green 1 connects to frame i think from stator pulse and other is connected to a resistor near battery which is inside the harness.

Oh forgot to mention in my previous post there was like a black wire which never beeped but did have a reading same for a pink or beige wire. Any ideas on this?

Thanks.

[JR]

It's possible that some put green for ground wires. The pink will have a reading to ground.

[1pkryan]

Oh right thanks.

Okay, seems i only get a spark if i run a wire from throttle cable to frame when right switch assembly is removed from the bike..  If i remove wire i cannot get a spark.

EDIT: Seems to be a problem with the stator...  Black probe on negative terminal and if i unplug the stator connector block and put red probe on white wire it stays on 1 but if i put cable running from throttle to frame i get 0.00. 

[JR]

I'm a little lost here? Throttle to the frame? This scooter according to the wiring diagram has a cdi/coil combination and gets it's voltage from the R/R not the stator or battery. It sounds like a broken ground wire in the harness somewhere?

JR

[1pkryan]

Yea sorry it's a little confusing and makes no sense..

I've removed the right hand side throttle assembly and switches from frame, what was happening was it was touching a unpainted surface on the handle bar and causing sparks with the throttle cable. Problem then occurred that i couldn't get a spark without the throttle cable touching the frame,

so i hooked up a wire 1 end attached to end of throttle cable other attached to my frame for testing purposes. I then took readings with the multi-meter with the wire attached to the frame and not to look for differences, which came back to the stator reading 1 when wire was not connected and 0.00 when wire was connected.

With R/R unplugged and testing the white wire from from the R/R end with stator block connector plugged back in with wire from throttle not attached to frame i get 0.05 with wire attached to frame i get 0.00

Seems the carburetor is live dunno if meant to be, not sure what going on to be honest, if i take out throttle cable from carburetor end then i get no spark either way obvious because it's not connected to owt at the other end.

Also for the record, i tried a different regulator and CDI unit which i brought for the bike ages ago in case something had blown but still had same problem.

Hope all this makes sense as i don't know how else to explain it. Thanks.