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Post by chops on Mar 6, 2013 5:47:06 GMT -5
Hi all.
I have a 2012 plate jonway italia 50cc GY6 scoot with 1000kms on the clock. Totally standard.
I washed it last weekend and afterwards it would not start,so I left it at work in front of the big fan heater and on the Monday morning it started first click.
All the following week I rode it home but could tell it wasnt how it should be, slight bogging and loss of power!!
Eventually at the weekend (7 days later) it finally gave up an stopped running twice ony way to work,however it did start again and runs for a short distance but not at full power and really hesitant.
I have drained the fuel tank and re filled with fresh fuel, changed the oil, checked spark plug and spark,checked vacuum!!
It's still running with a lack of power and hesitation.
What else can cause these symptoms???
Thanks
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Post by justbuggin2 on Mar 6, 2013 11:04:54 GMT -5
have you check the air filter
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Post by payneib on Mar 6, 2013 12:08:57 GMT -5
Water in the carb? I wash mine before taking it to the garage every time, and rinse with a garden hose. They did a carb clean last time and it was almost full!
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Post by scootnwinn on Mar 6, 2013 12:40:00 GMT -5
Water in the carb? I wash mine before taking it to the garage every time, and rinse with a garden hose. They did a carb clean last time and it was almost full! Sounds like the right solution drain the carb float bowl there is a scre w on the bottom already... Also unplug major connectors related to ignition and insure they are dry |
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Post by imnts2 on Mar 6, 2013 15:15:04 GMT -5
Perhaps water in the fuel tank too.
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Post by wutzthedeal on Mar 6, 2013 15:26:55 GMT -5
Perhaps water in the fuel tank too. Op stated that he drained the fuel tank. |
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Post by chops on Mar 12, 2013 9:39:50 GMT -5
Hi guys. Didn't think I had had any replies but I have. Lol.
Bike still not running as it should.
It is rideable but very hesitant/jerky and loses power over a short journey.It doesn't sound like it revs as high as it used to,but that could just be me. It does get upto full speed eventually but takes some getting there and eventually slowly loses power.
I've cleaned the carb out and all the jets, drained the fuel tank and re filled with fresh fuel, and also checked the air filter For cracks and checked vacuum which is all ok and have checked the spark which is good. it does seem a bit better once warmed but still not as it should be!
What else on the electrical side can cause these symptoms? Coil,cdi,plug???
Really struggling for ideas now.
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Post by payneib on Mar 12, 2013 10:36:50 GMT -5
It could be your Vv heights need checking: mine slipped at around 1500km. You say "totally stock" in the OP. Does that include spark plug? Mine felt like a totally different machine with a new spark, as the Chinese ones are rubbish.
Sorry I can't help more,
Ian
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Post by chops on Mar 12, 2013 11:52:36 GMT -5
It's had a new NGK spark plug from new.
What's Vv heights??
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Post by chops on Mar 12, 2013 11:54:09 GMT -5
Think I'm just gonna have to replace a few parts and see if it improves. What would be the first thing u would change?
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Post by payneib on Mar 12, 2013 17:19:55 GMT -5
Valve heights: distance between the top of the valve stem and the "tappet" on the rocker. Too small a gap and the Vvs are open too much, losing compression. Too much and it effectively suffocates the engine. (But seeing as you can do carb cleans etc, I'm sure I'm teaching you to suck eggs)
I'd check that first, and then maybe the CDI. That could have been affected by the water ingress. And would affect spark rate etc. Did you spray your electricals with anything when you first got? A PTFE based anti-corrosion spray works wonders.
I'm kind of starting to guess now, so hopefully some one else will jump in to.
Ian
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Post by wutzthedeal on Mar 12, 2013 22:07:35 GMT -5
cdi
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Post by chops on Mar 13, 2013 3:20:41 GMT -5
I managed to ride it home from work last night (4 miles) but It was horrendous. Very hesitant again and sluggish.
Now this morning before trying to get it back to work I changed the plug and it is 100% WORSE!! And can't even ride it!
Could this mean a ht lead problem?
I altered the valve clearances when I last had a problem but can't remember what I set them at, but can't see that being the problem as its only started happening since washing it.
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Post by rockynv on Mar 13, 2013 4:36:40 GMT -5
Could be high tension lead or even that the spark plug cap/boot was not on all the way and water got inside it. Unscrew spark plug boot/cap from the HT lead and spray both the end of the wire and cap with WD40 to displace and water that may have gotten inside and then screw it back on all the way. It should be fairly tight and not spin freely on the wire.
Sometimes the ignition pickup will crack so that water will get into it from rain or washing causing the symptoms you describe too.
Remember in future washing to only gently rinse from the top down and not force spray a bike clean. You really are not supposed to use more than a shower or misty spray to gently rinse a bike. Pressure washer, car wash nozzell or even a jet stream hose end nozzell is not reccomended.
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Post by scootercapecod on Mar 14, 2013 18:41:01 GMT -5
I'm leaning towards CDI here as well but don't rule out loose coil or solenoid bolts. The CDI is the most vulnerable component on a scooter and even the slightest moisture inside the socket (the harness that holds the wires) can cause all kinds of . Anything from slightly out of tune to not running at all. You may want to order up a no rev CDI and get a bit more from your scoot too.
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