![]() |
|
|
![]() |
#1 |
![]() Join Date: Jul 2013
Posts: 10
|
scooter pops and bogs under WOT
I have a jonway zuma clone 150cc gy6. It had 145 miles on it. When I am going about 40mph and then twist the throttle all the way it starts accelerating then it makes a pop pop noise and slowly slows down, if i let off the throttle then twist it again it accelerates fine. Seems to be a intermittent problem, top speed was about 58 now 52 mph then it pops and slows down to 45moh/ It idles fines and starts great. I'm thinking its either carb related or a bad CDI? It wouldn't be valves cause its intermittent and idles fine right? HELP!
![]() |
![]() |
![]() |
#2 |
![]() |
Might want to look into upsizing your carb jets.
__________________
2007 Sportiva Falcon GY6 150 4T 7,200+ Mi. 68 ( GPS Verified ) 76 MPG Few Mods, Lots-O-Tweaks 2003 Vento Zip R3i TurboCam 50cc 2T 8,500+ Mi. 62mph ( GPS Verified ) 90 MPG Seriously Modded Check out the new group for the Mountain Area! http://www.scootdawg.net/group.php?groupid=4 |
![]() |
![]() |
#3 |
![]() Join Date: Jul 2011
Location: Connecticut
Posts: 493
|
Sounds like 1 of to things:
Defective PAIR system (emissions air pump) or under-jetted. You should run a MINIMUM of a #107 main jet. Most bikes come with a #103-to #105 jet stock, which is too small.
__________________
2011 Roketa MC-23-150 4T 150cc 157 qmj 24mm carb w 115 main jet and paper cone air filter Manual petcock w Tygon fuel lines Scrappy Dog Scooters Retro-slash stainless straight-thru exhaust RED spring clutch Adjustable CDI (brand unknown, it's blue and red and works great!) KOSO high performance variator w 12g sliders Gates Powerlink 835-20-30 belt GPS verified 65mph on flats. |
![]() |
![]() |
#4 |
![]() Join Date: Jul 2013
Posts: 10
|
![]() |
![]() |
![]() |
#5 |
![]() Join Date: Mar 2013
Location: Tennessee
Posts: 35
|
When I bought my 150cc it kinda did the same thing. I replaced the CDI with a new one from, http://www.partsforscooters.com
and also added an electric fuel pump and pressure regulater from Autozone and no more problem. Good luck |
![]() |
![]() |
#6 |
![]() Join Date: Jul 2013
Posts: 10
|
![]() |
![]() |
![]() |
#7 |
![]() |
Sounds good.
![]() What type of air intake are you running?
__________________
2007 Sportiva Falcon GY6 150 4T 7,200+ Mi. 68 ( GPS Verified ) 76 MPG Few Mods, Lots-O-Tweaks 2003 Vento Zip R3i TurboCam 50cc 2T 8,500+ Mi. 62mph ( GPS Verified ) 90 MPG Seriously Modded Check out the new group for the Mountain Area! http://www.scootdawg.net/group.php?groupid=4 |
![]() |
![]() |
#8 |
![]() Join Date: Jul 2013
Posts: 10
|
stock everything including pair emission stuff.
|
![]() |
![]() |
#9 |
![]() |
The EGR crap is a joke. I did away with mine on all my bikes.
Look at unrestricting your airflow.
__________________
2007 Sportiva Falcon GY6 150 4T 7,200+ Mi. 68 ( GPS Verified ) 76 MPG Few Mods, Lots-O-Tweaks 2003 Vento Zip R3i TurboCam 50cc 2T 8,500+ Mi. 62mph ( GPS Verified ) 90 MPG Seriously Modded Check out the new group for the Mountain Area! http://www.scootdawg.net/group.php?groupid=4 |
![]() |
![]() |
|
|