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CVT or Engine Problem
Posted: Sun Jan 13, 2008 8:32 pm
by milisd
my spree has a problem and ive read everythign on here and i cant figure it out. heres everythign ive done to try and fix it. first off when i got it, it wouldnt go fast then 15mph. so i cleaned the carbs, then adjusted them. cleaned air filter. then took cylinder head off and took off the cylinder, cleaned all the carbon off. my moped then went about 24mph. when i get up to anythign over 15 mph it seems to make a humming noise, sort of like when u put a manual tranny in reverse and then drive back words.(do u know what i mean???) so i took the tranny apart adn replaced both wheel bearings and inspected the gears, which seemed to be fine. but my spree will only do about 25mph. and does accelerate very slow, and then slightly picks up speed around 15 to 25mph. i dont want to take all the time to do the muffler de-carbonizing if i dont have to. so im wondering how i can test my clutchees and derive pulley and how i know if its good or bad. it seems like the pulley may be dropping RPM's to soon. all by buddies got the same ped and they all do about 32mph on theres...and that would be bone stock. PLEASE HELP!!!
Posted: Sun Jan 13, 2008 11:01 pm
by Kenny_McCormic
Do a plug chop.
Posted: Mon Jan 14, 2008 10:24 am
by Farfignugin
also spree's don't have a CVT, it's just a fixed ratio pulley.
Posted: Mon Jan 14, 2008 1:46 pm
by milisd
i also did a compression test and i got a reading of 120. and the engine has 6k on it....i will do the plug chop and see what i get.....thanks
Posted: Mon Jan 14, 2008 2:09 pm
by Dac
Kenny_McCormic wrote:Do a plug chop.
Dylan, Must you tell everyone to do a plug chop?
[Yes do a plug chop is a major tuning factor on 2strokes. yes i recommend doing them im just giving Dylan a hard time.]
Posted: Mon Jan 14, 2008 4:00 pm
by Kenny_McCormic
You cant really tune one of these "by ear" so plug chopping is the only way to check the fuel air mix. Decarbonizing the muffler will help the bottom end. Is this a spree or a spree Iowa? BTW 120psi is GREAT compression for a high mileage spree.
Posted: Mon Jan 14, 2008 5:32 pm
by wrxstiguy2004
What about the belt slipping?... Might just be worn out.
Posted: Mon Jan 14, 2008 5:50 pm
by Dac
Kenny_McCormic wrote:You cant really tune one of these "by ear" so plug chopping is the only way to check the fuel air mix. Decarbonizing the muffler will help the bottom end. Is this a spree or a spree Iowa? BTW 120psi is GREAT compression for a high mileage spree.
Yeah, that psi is amazing. And i agree with you, plug chops give you a great idea as to what is going on.
wrxstiguy2004 wrote:What about the belt slipping?... Might just be worn out.
that could be. But i would plug chop first to see what is going on motor wise. If the motor seems to be good then he should check that next.
Posted: Tue Jan 15, 2008 12:48 pm
by milisd
pretty sure its not an iowa model.
if the belat was slipping wouldnt it just rev up and not go any wheres, mine just sorta boggs down and then right around 15mph the rpm's pick up and i start going faster.
Posted: Tue Jan 15, 2008 7:55 pm
by uspmale
I think your on the right track when you mentioned the clutch assembly.
Inside once you remove the bell, you can inspect the clutch shoes.
If they look OK, then further disassembly will show the large spring that controls expanding the pulleys.
I think this spring is weak, causing your symptoms.