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Post by lankeeyankee on Sept 10, 2008 3:35:41 GMT -5
Geeeze, most of you guys are a bunch of sensitive babies I swear. I am blunt, straight forward and most of all honest. It seems the guy isnt very mechanically inclined. I have been working around engines for the past 25 yrs. and can honestly say I have never stripped out a cylinder head. Not everyone is mechanically inclined and tools are weapons in there hands that winds up tearing up more than fixing which leads to fusteration. Thats why I asked if he had a friend or take it to a small engine shop and prey they will work on it. Yes inserting a heli coil is a very simple task to a mechanic but for one that has never heard of a heli coil, or know how to read thread pitch along with the use of a tap shouldnt attempt it. I am not your typical scooter rider, I could care less about hopping it up to squeeze another 4 mph out of it. Where are all the gear heads to give ideas on increasing the performance along with increase in gas mileage. I think your all silly putting performance parts on a scooter but hey each to there own. If I want HP I just jump on NItrous Fed 1999 VMAX and hit the 60HP shot to a modified 1231CC engine putting down over 200HP at the rear wheel.
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Post by dean on Sept 10, 2008 6:40:21 GMT -5
scootwes -- It was still an answer to dishe's question. Just because its public doesn't chage that. Grow up
--- I have so many bones they turned negative
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Post by dishe on Sept 10, 2008 8:21:41 GMT -5
i'm with scootwes on this guys... I was offered a used honda 300cc for a few thousand or buy the chinese one for under a grand. I bought the chinese one, and have never regretted it yet! sure I have to learn about mechanics... but that's actually part of why I like it! As I already said, I wasn't entirely serious about going japan or italian... any more than going to just let it sit. obviously I'm going to try and fix it, and if I can't, I'll sell it.
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Post by gy6rocket on Sept 10, 2008 8:23:13 GMT -5
Take a photo of the head, where the plug threads are. By looking at it I can tell you if you can thread a new plug into it or if you need to have the threads serviced. If the spark plug "popped out" as you put it then it was never sufficiently tightened and explosion after explosion have actually "unscrewed" the plug and it fell out. If this is the case I am pretty sure the threads are toast, but again I can't make this determination untill I see a pic. BTW to everyone commenting in this thread: This type of problem can happen to any engine weather it be a GY6 or a Honda or a Ferrari. The problem is not because of a cheap engine, its because the plug was not installed correctly. Now the GOOD thing about owning a cheap Chinese scooter is parts are also CHEAP. I bought a new head with valves (no EGR ) for $40. If this was a Honda a head would cost 3x that.
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Post by dishe on Sept 10, 2008 11:36:44 GMT -5
gy6rocket, I tried to get a shot of it, but it was hard to get a clear pic with the camera at that angle- I couldn't get any good lighting into the hole, so you just see the outside of the plug cylinder really clearly. Don't think it will be helpful, so I didn't post it.
Meanwhile, I decided to just screw the damned thing in as tightly as I could without feeling like I exerted too much force to break anything. It seems in there pretty snug, so I attached the boot and fired her up.
At first it didn't seem to start. I poked around at the boot and tried again, and lo and behold- she started right up and sounded at least a little better than before. I think it also helped that I adjusted the idle screw a bit first.
But, after a min of idling as I cleaned up the tools, it stalled, and wouldn't start again. I took off the boot to find that THE BOOT CONNECTIONS HAD FALLEN APART INTERNALLY!
The copper-colored ridged part that attches to the spark plug simply fell out, followed by a little metallic bar (almost looked like a fuse, but it seems to be solid metal). Looks like all the abuse the boot has been taking lately caught up with it (on and off the plug countless times in the span of a few days). Frustrated, I shoved the pieces back in the order they seemed to have been originally, and it seems to start if the boot is jiggled the right way. *sigh* so, how difficult is it to find a new boot, and where should I be looking?
I did a quick search on the forum for this new problem, found a couple of references to it, but no one describing what to actually do about it.
At least the spark plug situation seems to have improved somewhat (for those few moments it was running, it didn't sound as bad as it did before).
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Post by harrywr2 on Sept 10, 2008 11:47:04 GMT -5
Spark plug boots caps are pretty standard. Take the old one to a motorcycle shop and get a matching one. The last one I bought cost me $3.99.
There is a upside down sheet metal screw in the base of the boot the screws into the coil wire.
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Post by dishe on Sept 10, 2008 11:48:47 GMT -5
yes, that upside-down sheet metal screw is what I believe I saw fall out. How does one remove the boot? Do I clip the wires, or does it come off?
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Post by gy6rocket on Sept 10, 2008 13:09:26 GMT -5
Just strip the coil wire 1" and wrap it around the plug top to test. Can also be used in a Pinch.
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Post by harrywr2 on Sept 10, 2008 13:24:04 GMT -5
yes, that upside-down sheet metal screw is what I believe I saw fall out. How does one remove the boot? Do I clip the wires, or does it come off? The spark plug cap screws off the wire. The rubber boot does come off.
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Post by dishe on Sept 10, 2008 14:30:50 GMT -5
Ok, got it off, thanks guys. Now to find a replacement boot/cap...
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Post by dishe on Sept 10, 2008 16:54:07 GMT -5
Hey, will a new plug cap screw into the wire after its been cut, or is there some sort of threading around the end of that cable that the cap attaches to?
I'm asking because I would like to cut the wire and wrap around the spark plug for now (just to test), but I want to make sure I won't be ruining how the cap connector attaches.
Also, any good places to order such a connector online? Or is it better to walk into a local shop (gotta find a time to go when they're open- most places close before I come home).
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Post by dishe on Sept 11, 2008 13:00:19 GMT -5
Ok, started a new thread ( scootdawg.proboards59.com/index.cgi?action=display&board=talk&thread=16175) for the boot/connector since its not really the topic of this one. Meanwhile, just letting you guys know that for now I took gy6rocket's advice and attached the wire directly to the plug. Wrapped it with electrical tape to hold it together, and went for a quick ride. Scoot has a definite loss of power, but still quick enough to keep up with local 35mph road traffic, so its not a gonner yet. Might try to apply some kind of sealant around the plug to help with any pressure leaks may have resulted. Still think perhaps all this commotion has damaged the sparkplug, and considering a new one.
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