OKAY! I've talked about this all before but I think I have narrowed it down just a slight bit more.
This is hard to explain, but when you roll the throttle on just a little bit it SHOULD just rev up a little bit and stay at a certain RPM. However, my bike will just rev up to redline if you hold it even like 1/16 open. While in neutral it responds that way. While the bike is in gear and in motion it responds properly.
The bike idles aaaaaalright I guess it could be better. However, when the choke is pulled out the engine revs right up and out of control.
So what I am thinking is when the choke is on, the engine pulls air from somewhere else, possible leak?
I opened the air box and secured an air compressor to the rear of the carburetor, then lathered soapy water all over any place I could imagine an air leak, and would be expecting bubbles to come out from some place -- thus identifying an air leak. I found nothing.
With the engine running, I covered the rear of the carburetor with my hand ( basically doing the same thing as engaging the choke) and the engine will rev out of control.
My question is, instead of bogging down like it should, why does it rev out of control when I kill its air supply?
I have never been able to get this thing running properly, so it may be a leak, a hole, improper carburetor setup, but I dont know...
Can anyone help me?
Bill, at 5th gear, can you maybe ask one of your mechanics what it would cost to have it looked and and fixed?
I have hardly any money, but I need this bike to get around as it is my only source of transportation and I need it to work.
The bike is a 1982 Honda cm250c.
it has new spark plugs, I cleaned the carb myself, has clean oil, and rides fine when it is up to speed, Although I cannot seem to get it past about 90km/h.