2002 zuma

dwint51 · 09-06-2015, 12:18 PM

I just picked up a used zuma.put some parts on pipe and springs and runs great.i looked at my plug and its white.so I went up to 100 main and still white.stock main is 80 so something is wrong.i have no power at all up hills and its a new bbk with 1500 clutch and torque springs.what could be wrong.

blueboy5000 · 09-07-2015, 06:35 AM

1500 is only like 300rpm higher than idle. Why did you swap out the stock 2000rpm springs for 1500rpm springs? That literally the opposite of what every other tuner does to improve take off/hill climbing.

Change your jet back to 80, and install 2500 or 3000 rpm springs.

dwint51 · 09-07-2015, 07:09 AM

they only make 1000,1500,2000 and I cant use 80 main with a pipe the plug is white

kz1000st · 09-07-2015, 09:36 AM

You say it runs great but has no power up hills if I read that right. What kind of air filter, foam or stock? It is a 50cc scoot so power will lose to gravity on a hill. Two strokes lose a lot once the revs drop off. You could try blocking off the air box a little, simulating a little choke, and see if your power picks up and then check the plug.

dwint51 · 09-07-2015, 04:10 PM

I put the stock pipe back on with 1500 clutch and torque springs.its a 72cc that's why I was surprised.i had the same set up on my Chinese and it went 53 but it was geared higher.i have 5.5 rollers and I can go up hills great now since the stock pipe wakes up at 7 mph.im happy until I figure out which pipe works the best

09-07-2015, 06:35 AM	#2
blueboy5000 Join Date: Jul 2011 Location: Connecticut Posts: 493	1500 is only like 300rpm higher than idle. Why did you swap out the stock 2000rpm springs for 1500rpm springs? That literally the opposite of what every other tuner does to improve take off/hill climbing. Change your jet back to 80, and install 2500 or 3000 rpm springs. __________________ 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.
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09-07-2015, 09:36 AM	#4
kz1000st Join Date: Oct 2008 Location: Hyde Park, NY Posts: 1,062	You say it runs great but has no power up hills if I read that right. What kind of air filter, foam or stock? It is a 50cc scoot so power will lose to gravity on a hill. Two strokes lose a lot once the revs drop off. You could try blocking off the air box a little, simulating a little choke, and see if your power picks up and then check the plug. __________________ 2008 Eagle Milano 150- 9,679 miles 2009 Honda Rebel 250- 10,434 miles 2009 CF Moto Fashion- 16,023 miles 2009 MC-114 50cc Cub Clone- 4,317 miles twowheeler.yolasite.com/ That's 30,049 China Scootin miles and Counting.
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