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Post by chewbaca on Jul 15, 2020 12:16:02 GMT -5
there is also a rectifier
it is far more likely to go out than the stator
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Post by chewbaca on Jul 12, 2020 10:29:23 GMT -5
try relocating your starter solenoid to somewhere cooler
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Post by chewbaca on Jun 24, 2020 14:34:26 GMT -5
I don't think that would happen to both tanks at the same time besides the vent is just a cheap one way valve doesn't really do anything and will still "work" soaking wet.
sounds like bad gas to me as well
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Post by chewbaca on Jun 24, 2020 2:37:58 GMT -5
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Post by chewbaca on Jun 21, 2020 21:30:47 GMT -5
for 3k you can get a new 300 China scooter no problem
or a 400 used Bergman
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Post by chewbaca on Jun 16, 2020 20:51:56 GMT -5
well if you want to check the head for leaks it's best to just get a new gasket and crack it open. A leak will cut a channel in the soft metal and you must remove the channel or the leak will come back quickly and worse even with a new gasket. You can do it yourself buy honing the damaged surface with 600 grit wet-dry sand paper and WD40 on a flat piece of glass.
coffee table stereo cabinet doors mirrors all work well as long a you can't see ripples in them
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Post by chewbaca on Jun 16, 2020 9:14:18 GMT -5
no you kinda need the idle a little rich so your motor stays cool at idle. there isn't really enough rpm to cool it well with the fan and when you are not moving the block gets no cooling at all. it would be worth doing if you had an oil cooler though
you can get something like what you are describing with a partial intake blockage
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Post by chewbaca on Jun 14, 2020 21:50:01 GMT -5
do you drop all the way down or just let of a little?
the idle circuit is extra rich to help keep the cylinder cool at idle, but at higher rpm it can pump a overly rich mix
into a hot exhaust system and the extra fuel will pop if it doesn't cool before it hits the O2
so a leak or a shorty without a cat or even a wrap can all do that
the feeling of power loss can be attributed to the engine breaking that happens automatically. It's different than what someone used to a motorcycle with gears and a clutch would feel
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Post by chewbaca on Jun 13, 2020 15:11:46 GMT -5
take the exhaust pipe off and look for black outside the seal and then just replace the gasket with a new one then replace all the vacuum line with new better quality stuff. both are super cheap to do and the stock vacuum line is very poor quality.
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Post by chewbaca on Jun 13, 2020 14:52:12 GMT -5
I think your vacuum petcock is shutting at low vacuum
causing fuel starvation as soon as the float bowl is empty
try removing it from the fuel circuit.
if that fixes it it's either a bad vacuum line or petcock
most probably a vacuum line
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Post by chewbaca on Jun 13, 2020 14:46:50 GMT -5
sounds like a possible vacuum leak and a probable exhaust leak
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Post by chewbaca on Jun 12, 2020 11:17:19 GMT -5
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Post by chewbaca on May 4, 2020 12:18:40 GMT -5
pretty much the only issues with a new head is rolling the dice on the quality and the time it takes to get it. I say order one if you want to, but fix up the old one as well.
After a valve grind the valve is slightly lighter.
If you have good compression it's more likely to be the fuel mix, try stripping off the air cleaner and ducting and give it a crank. If that makes it worse put it all back on and spray the air filter with WD40.
removing the air cleaner will slightly lean the mix, the WD40 will enrich the mix as it evaporates from the filter.
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Post by chewbaca on May 3, 2020 0:24:04 GMT -5
at 7000 miles you're almost guaranteed to need your first valve job
tight valves can cause starting issues and the extra cranking is bad for the battery and the starter motor
it's .004 and .005 for intake and exhaust
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Post by chewbaca on Apr 23, 2020 22:52:43 GMT -5
what are the old variator rollers weight
check to see if the cams are the same
and look at the gasket thickness in the cylinder and head
also check the shape of the combustion chamber. By preferences you have no base gasket and a spring steel head gasket and you may want to retain some of the old parts if they are superior and still usable
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