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Post by nofxortiz on Mar 17, 2013 20:29:27 GMT -5
Is the motor in time is the piston top dead center with every timing mark lined up Sorry if this is ignorance but if you're referring to setting the fan to T-mark or top dead center and the cam lined up correctly when adjusting the valves then yes. I'm not sure how I would adjust the timing of the spark when a CDI is used. |
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Post by teddy554 on Mar 17, 2013 20:46:58 GMT -5
yeah that is what i was refereing to, with those marks line up did you check to see if the piston was in fact tdc and you said it has been open already and they could of line the flywheel up on the t mark with piston not tdc and put the cam on with the holes lined with the head
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Post by alleyoop on Mar 17, 2013 20:55:37 GMT -5
Ok, from what you said it looks like the scoot may have a lot of miles on from the condition you said it was in. No new scooter with the KM you say it has would not be in that condition.
Since the crank does turn and moves the piston up and down and it takes FUEL, SPARK and COMPRESSION for a motor to run. Lets check each one.
Since you have been playing with fuel and spark CHECK YOUR COMPRESSION.
If you do not have a compression guage the next best thing is use your finger.
Take the spark plug out and stick your finger in the hole nice ans snuge twist the throttle wide open and hold it and crank it. If it has compression it will blow your finger off the hole don't be afraid your are pushing down with your finger and it should move it up out of the hole not BLOW YOUR FINGER out but lift it out of the hole a little. If you just feel some pressure it is low on compression and may be the cause of the hard starting problem. If you feel nothing then it may be the piston has a hole in it.
Get back on that compression hope it lifts your finger out of the hole otherwise you have internal engine damage.
If it lifted your finger out and Since you already have the PLUG out HOLD IT ON THE VALVE COVER and crank it and see if it is sparking nice and blue.
Get back on those two.
Alleyoop
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New Rider
Currently Offline
Posts: 16
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Joined: Mar 4, 2013 8:42:31 GMT -5
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Post by nofxortiz on Mar 18, 2013 18:49:54 GMT -5
Ok, from what you said it looks like the scoot may have a lot of miles on from the condition you said it was in. No new scooter with the KM you say it has would not be in that condition. Since the crank does turn and moves the piston up and down and it takes FUEL, SPARK and COMPRESSION for a motor to run. Lets check each one. Since you have been playing with fuel and spark CHECK YOUR COMPRESSION. If you do not have a compression guage the next best thing is use your finger. Take the spark plug out and stick your finger in the hole nice ans snuge twist the throttle wide open and hold it and crank it. If it has compression it will blow your finger off the hole don't be afraid your are pushing down with your finger and it should move it up out of the hole not BLOW YOUR FINGER out but lift it out of the hole a little. If you just feel some pressure it is low on compression and may be the cause of the hard starting problem. If you feel nothing then it may be the piston has a hole in it. Get back on that compression hope it lifts your finger out of the hole otherwise you have internal engine damage. If it lifted your finger out and Since you already have the PLUG out HOLD IT ON THE VALVE COVER and crank it and see if it is sparking nice and blue. Get back on those two. Alleyoop Thanks Alleyoop I checked the compression and it seemed strong enough, my spark was present but maybe a little inconsistent so I went ahead and ordered a new coil just for good measure. I have a question pertaining to the carb, I ordered the 18mm stock carb from scrappydogscooters along with a performance air filter that included a #  jet. I didn't find the jet in the package when I received it so I assumed he installed it into the carb and took out the stock main jet. I understand a # might be too big if not accompanied by the performance air filter as I wasn't going to install it until the scooter was able to run. Could this be a reason it won't start as the carb is flooding or would it still start either way and just run very bogged down? Thanks |
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Post by millsc on Mar 18, 2013 22:47:24 GMT -5
takes quite a bit to bog the scoot down, i ran a 98 jet in my scoot with a 50mm bbk until my jets arrived settled in at  jet on my project scoot roketa, ran ok with the huge jet lost a little power but no bog or starting issue, starting issue could be a idle jet problem, the main jet doesn't kick in until later |
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..BAD TO THE BONE..
jet. I didn't find the jet in the package when I received it so I assumed he installed it into the carb and took out the stock main jet. I understand a #
jet on my project scoot roketa, ran ok with the huge jet lost a little power but no bog or starting issue, starting issue could be a idle jet problem, the main jet doesn't kick in until later