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Most scooters need a minimum of 100 psi in compression in order to run start and properly. Compression should be checked when the scooter engine is warm. However, that's hard to do if your scooter is not running. So, just hook up a compression gauge and open up the throttle all the way. Crank the scooter until the needle on the compression gauge stops moving. This should take no more than 5 seconds. Very roughly, 100-125 psi is good, 125-150 psi is very good, and 150+ psi is great. If you don't have this level of compression, then you have bad valves and/or bad piston rings. If you want, you can add a teaspoon or so of oil to the engine through the spark plug hole. Then try the compression test again. If compression is higher, then it's likely you have bad rings. The oil will seal the rings and give you better compression. If compression is the same, then you have bad/misadjusted valves.
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First, remove all of the rubber and gaskets or they will get damaged. After a 20 minute soaking in carb dip, I blow out the carb with compressed air. You have to get all the jets and the passageways clean. Be sure the jets are clear, especially the starter jet. Sometimes carb cleaner won't clear out these tiny jets. Use a guitar or a piano string, a strand of copper electrical wire, or a tiny drill bit pin vise. Be sure not to increase the size of the hole in the starter jet or you'll change the tuning. Carefully reassemble everything, checking for cracks in the rubber carb boots and the gaskets. Replace them if they are old and cracked. Be sure and remove all rubber and gasket material first or they could get ruined. Spray carb cleaner also works if you're diligent.
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Second generation Toyota Prius - DailyTech
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When it comes to hybrid vehicles, Toyota's Prius is the king of the road . The vehicle was first introduced in 2000 as a 2001 model and the second generation model bowed in 2003 as ...
DSTV highlights - January 30, 2008Tonight, South Africa - 53 minutes agoOne day, Juna's life ends abruptly in a motorcycle accident but she is offered a second chance at life if she agrees to save the planet. ...Maureen Hancock hears voi
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Daily News & Analysis, India -Earlier on January 16, three youngsters died in a fatal motorcycle accident on the Versova Bridge on the western express highway in Kashimira. ...
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Overview: Ducati Monster 1100 Motorcycle
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A closer look at the Ducati Monster 1100 motorcycle presented at Intermot, Germany.
Ducati's main motorcycle just got bigger, better and faster.
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motor scooters
Let's Look At More 250cc gas scooter
Most scooters need a minimum of 100 psi in compression in order to run start and properly. Compression should be checked when the scooter engine is warm. However, that's hard to do if your scooter is not running. So, just hook up a compression gauge and open up the throttle all the way. Crank the scooter until the needle on the compression gauge stops moving. This should take no more than 5 seconds. Very roughly, 100-125 psi is good, 125-150 psi is very good, and 150+ psi is great. If you don't have this level of compression, then you have bad valves and/or bad piston rings. If you want, you can add a teaspoon or so of oil to the engine through the spark plug hole. Then try the compression test again. If compression is higher, then it's likely you have bad rings. The oil will seal the rings and give you better compression. If compression is the same, then you have bad/misadjusted valves.
Got Spark?
Buy an electric 2 wheel scooter today!
First, remove all of the rubber and gaskets or they will get damaged. After a 20 minute soaking in carb dip, I blow out the carb with compressed air. You have to get all the jets and the passageways clean. Be sure the jets are clear, especially the starter jet. Sometimes carb cleaner won't clear out these tiny jets. Use a guitar or a piano string, a strand of copper electrical wire, or a tiny drill bit pin vise. Be sure not to increase the size of the hole in the starter jet or you'll change the tuning. Carefully reassemble everything, checking for cracks in the rubber carb boots and the gaskets. Replace them if they are old and cracked. Be sure and remove all rubber and gasket material first or they could get ruined. Spray carb cleaner also works if you're diligent.
Find cheap electric scooters for sale today!
250cc gas scooter Galore
Second generation Toyota Prius - DailyTech
Wed, 17 Sep 2008 00:54:00 GMT
When it comes to hybrid vehicles, Toyota's Prius is the king of the road . The vehicle was first introduced in 2000 as a 2001 model and the second generation model bowed in 2003 as ...
DSTV highlights - January 30, 2008Tonight, South Africa - 53 minutes agoOne day, Juna's life ends abruptly in a motorcycle accident but she is offered a second chance at life if she agrees to save the planet. ...Maureen Hancock hears voi
Wed, 30 Jan 2008 07:48:05 +0100
Daily News & Analysis, India -Earlier on January 16, three youngsters died in a fatal motorcycle accident on the Versova Bridge on the western express highway in Kashimira. ...
::
Overview: Ducati Monster 1100 Motorcycle
Mon, 13 Oct 2008 12:30:11 +0200
 |
 |
Ducati's main motorcycle just got bigger, better and faster.
...
motor scooters
posted by Big ScooterAmnon | 7:52 AM
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