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Post by sprocket on Apr 14, 2012 13:54:12 GMT -6
That is a tank mounted shut off valve they all have 3 positions but you only use on and off.. the reserve isn't used...
It is usually one of these or a petcock but not both in my experience...need to see if you can find the shop manual for that Honda , they should be on the internet
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Post by sprocket on Apr 14, 2012 13:41:30 GMT -6
It could have but I have seen rusted pick-up coils and they worked fine...
You need to test the voltage going from the stator to the CDI and see if what you get when you turn the engine over...should be above 40 volts AC...50 to 60 ideally...
Check the pulse on the pick-up coil it should be about .5-1 volts every time the coil fires...
But if you have red spark it is either the stator, CDI, ignition coil or high tension wire or plug boot...also check the spark on a bare part of the FRAME.. it could be a bad engine to frame ground.. seen it many times...
The CDI steps up the voltage to about 180 volts and it is fed to the coil where it get ramped to about 18,000 volts...and then fed down the wire to the plug.
The pick-up coil is simply the trigger.. and if you have any spark it is probably working fine...
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Post by sprocket on Apr 13, 2012 16:37:12 GMT -6
If you are getting pre-ignition with 87AKI you should adjust the air/fiel and do a spark plug read and perhaps up jet or raise the diaphram needle a notch to richen up the engine.. you might be lean...
Could also go to a colder plug...
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Post by sprocket on Apr 13, 2012 11:10:33 GMT -6
Most GY6 150s are 8.8:1 and the CFMotos are 10.2:1 not particularly high compression...
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Post by sprocket on Apr 12, 2012 13:24:46 GMT -6
CF Moto E-Charm are certainly a cut above most chinese scooters in quality but parts.... who knows where they come from... Most Chinese scooters have at least one or perhaps two parts that fail in the first few months...
What is the compression on that engine 10.2:1? probably premium is ok
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Post by sprocket on Apr 12, 2012 12:47:52 GMT -6
I have known many people to have problems with those CDIs...I agree with Alley get it back to stock electrics and get it running and then start swapping parts one at a time...
But I would be very surprised if you can turn the engine over with a stock starter.. there simply isn't enough windings...you will just arc the brushes on the commutator...Perhaps a brand new stock starter would work, but if your starter has many starts on it you don't stand much of a chance.
You want to put the black plastic shroud back on the engine.. or you will soft sieze it in 20 miles...I guarantee it! These are forced air cooled engines...
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Post by sprocket on Apr 11, 2012 19:02:17 GMT -6
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Post by sprocket on Apr 11, 2012 17:38:34 GMT -6
Backfires on de-acceleration usually are caused by air getting into the exhaust at the header or the engine is running very lean or very rich (fuel to air mixture) and raw fuel is exploding in the muffler...
Basically a backfire is an explosion...you need fuel, oxygen and a hot ignition source like a manifold...
Usually carb backfires are caused by the intake valve, and I suppose the exhaust valve can do the same thing in the other direction...
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Post by sprocket on Apr 11, 2012 17:28:53 GMT -6
jct842.. GREAT point... These scooter certainly are not good at handling even low percentage 10%-15% ethanol.. you get a white chalky build-up in the float bowl in a matter of a few months...the stuff will block the main jet solid... I know in Canada we can still get 'pure' gas, but I think in some states all the fuel is ethanol blended... Does Seafoam cut this stuff or put it back in solution with the gas?
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Post by sprocket on Apr 11, 2012 14:37:43 GMT -6
The pick-up coil is located on the flywheel they trigger the spark.. just stock or you would have to adapt something... Fouling plug on an EFI??? ..I would be looking at the O2 sensor... Use NGK plugs...lots of people like iridium.. I just side gap and index the standard copper... works well... Plug reads... www.ngksparkplugs.com/tech_support/spark_plugs/faqs/faqread.aspYou should be burning regular fuel...not premium... to many spark retardants in the premium for these small engines...in some cases 89AKI may be good, depends on many things including elevation and the weather... Also a cap of Seafoam to a full tank.. would help the injector stay clean... But for these Bashan is the man. ;D |
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Post by sprocket on Apr 11, 2012 14:26:56 GMT -6
Yes it must idle.. if it doesn't idle you have other concerns to fix first...
Try turning the idle screw all the way in gently and then turn it out 2.5 turns. This will get you in the ball park and the engine should idle...
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Post by sprocket on Apr 11, 2012 11:29:14 GMT -6
A common mistake when adjusting the air/fuel mixture is people don't run the scooter long enough before they start adjusting... you should ride it or idle it for at least 3-4 minutes to be sure the enricher is closed...
The engine needs to be fully warmed up!
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Post by sprocket on Apr 11, 2012 11:23:03 GMT -6
>>>also a racing coil and cdi are waste of money. I agree most are garbage...but good CDI and coils from makers like NCY are worth the money.. they will outlast the scooter.... Here is a new type of AC CDI.. with a number of adjustments...timing and rev limiter Attachments:
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Post by sprocket on Apr 11, 2012 11:20:12 GMT -6
93 octane is the wrong fuel for the GY6 engine.. you should be using 87 AKI...regular...theses are relatively low compression engines...
The manuals say 91 to 93 RON.. that is the Chinese gas grade..not used in North America, the equivalent is 86-87 AKI
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Post by sprocket on Apr 11, 2012 11:16:33 GMT -6
Is there an electric or vacuum fuel pump on those?
The center stand/vibration issue is just weird.. Is the stand staring to fold when you do this? Sounds to me like a pulled or pinched or loose wire somewhere.. perhaps in the handlebars...kill switch etc...try the same movement but use the back rack to push it forward...
As I mentioned to another person the pick-up coils on these scooters can be flakey and cause intermittent running and stalling issues...
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