News since last post:
Bike stopped running again and nothing I did could get it fixed. Thankfully my more experienced friend volunteered to come by and had it running in a few minutes.
As soon as we were fixing to take it out for it's first test run, the RPMs started rising out of control and we had to hit the kill switch to keep it from going over redline. Just as with my last post, I searched the forum here and found lots of great information on what might be causing this.
Can't figure out what has happened here to my 72 CB 350. After installing a new cross over tube on my fuel tank due to a brand new leaking quick disconnect I had just installed, I started the bike and the engine RPM's took off climbing very rapidly at which point I hit the kill switch to shut it...
So I've been having some trouble with the cb350k2 lately. It will run just fine for a while, and then randomly when I stop, the rpm's will skyrocket up to 5k (in both neutral or in gear). The throttle tube isn't sticking, the cables are not stuck or pinched, and the carbs are not engaged from...
What a way to introduce myself! I'm a brand new rider and I have a 1980 Honda CM400A. I've had it about 2 weeks and it ran great at first but now it won't even idle, there's no acceleration and as I put along in 1st gear, all of a sudden it will backfire and rev up to super high RPM's , to...
I tightened both intake manifolds to make sure there was no air leak there, felt for exhaust somehwere it shouldn't be, and checked for stuck throttle. None of those were the issue.
I then took out one spark plug at a time (maintaining ground so they would still spark) and found that only the right cylinder would rev out control while the left one would run fine and idle normally. Therefore I figured it was a carb problem with the right carburetor.
After taking apart and cleaning the right carburetor, the problem was solved. It idles correctly and the revs don't rise uncontrollably.
I forgot to take pictures of the work unfortunatley so this will just be a text post. Thanks again for all the help here on the forum!