I have 80cc ht 2 stroke, motor has around 2500 miles and has been running great ( other than the occasional mag) suddenly it started sputtering around 5000 rpm and wont go any higher. Im running a 44t sprocket and usualy run at about 6500 rpm wich puts me in the 30mph range. I changed the plug,fuel filter, cleaned the airfilter, changed needle adjustments,replace fuel line, checked intake and exhuast bolts, and nothing has made a difference in top speed, it pulls harder after replacing all of that, but it still sputters
sputtering....help
- Thread starter sleepy hollow
- Start date
It could be a bad electrical connection or the CDI going bad.
They usually just fail outright, but sometimes they slowly fizzle out.
They usually just fail outright, but sometimes they slowly fizzle out.
Ill give it a try, this morning i couldnt get it above 4600, had one burst to 7200 then it bogged back down to 4500
I took the carb apart and cleaned it, when that didnt work i swapped the cdi with a spair. I like to have atleast 3 spares of electrical components
That "spare" technique is actually quite common in motorcycle shops. They usually have a whole slew of known good regulators, igniters, CDI's, ect. as shop tools to help diagnose faulty systems.
