Could really use some help! CB360

M

Mac_2766

New Member
Hey guys,
So I purchased a 74 CB 360 a few weeks ago, test drove it and drove it to my sisters place where it sat for about 3 days outside in minus temps(not so bright I know). Came back with trailer and picked it up. When I got it home the first thing I noticed was that there was gas running down the side of the tank, came to find out that although the gas cap was locked it must not seal properly.

The next day I figured I would try to start her up. With a little persuasion I got her going. However, I noticed that while the choke was on the rpms were at 0 and when I took off the choke it would immediately die. I attributed it to the cold and put it away for the night.

The next day I took it out to try again. The electric start wouldn't work,i managed to get it started with the kick but it was sputtering significantly and wouldn't stay running more tan about 30 seconds without dying oIf i gave it any throttle it would also die immediately. Also, noticed that the carbs are leaking gas at the seam where the float bowl connect to the rest of the carb. and took the air filters out because they looked ancient, left them off for the time being.

After lurking around on here for a while I figured it must be dirty carbs so i took them apart and gave them a cleaning, although they seemed very clean to begin with(all jets were clear and diaphrams in good shape). Put them back in today and it was the same story.....

Looked at the battery and tested it, it was definitely low,so i trickle charged it and tried it again tonight, electric start worked but it didn't sound good at all, no rpm at choke dies on its own, dies as soon as i touch the throttle, or completely close the choke.

I will get a new battery, but in the meantime I'm hoping someone might be able to point me in the right direction as far as what the problem might be here. Any advice or thoughts would be greatly appreciated. Thanks!

I also have a video if that helps!
 
I'm thinking battery most likely.
Hook your car battery to it with the car off and see if it will run.
 
Oh and if the bike is running the Rpms cannot be at zero.
 
Our bikes do not like cold temps. Mine (CL360 with a CB360 motor) takes a bit of know-how to get started in the cold.

Yes your filters are ancient, but put them back on- you need them and they were designed to last for quite a while. Even if your carbs look clean you can't visually see clogging most of the time.

Can you describe your starting process? Including how long you keep the choke on?

For me, I give the bike some gas while off. I have the choke fully closed. I start the bike and let it run for 20-30 seconds until it dies. I then flip the choke just a little bit and let it warm up for 3-5 minutes. It may die a few times during this. But regardless I keep it going. Usually if I give it more than a 1/4 turn of throttle it will die. I give it just enough to keep it alive. After 5 minutes or so I am ready to turn the choke all the way turn and ride away.

When the temp is above 50 degrees or so it is a lot easier to get it running.

What do your plus look like?
Get those fuel leaks dealt with PRONTO.
 
Well my start process has varied so far but for the most part I make sure fuel is on, choke fully on, give it a little gas, then either give it a kick or use the electric start (kick seems to work better), let it run as long possible before it sputters itself out, or i get brave enough to grab the throttle, at which point it dies.

Not sure what you mean by my plus? Sorry, rather new to the biking world.

Also i live Canada....If our bikes dont like cold temps i may be in trouble :-\
 
He meant plugs haha.

It shouldn't be that bad when it's cold, they are cold blooded but not as bad as the previous poster described usually lol.
Start it with a tiny little bit of throttle and hold that until it warms up and slowly wean the choke off. Then you'll be good.
 
Haha gotcha! Just put new plus in today, the previous owner had mentioned he was going through quite a few of them though. Any recommendations on good plugs for a 360? or what might be causing them to burn out so fast? Right now im using NGK bb8008's? or something along those lines.
 
I used b8es on my 350. I'd say 360 is the same.
What did the plugs look like when you pulled them?
 
I'd check the points and timing and clean the carbs again and then I'd do a compression check to see where things stand in that department.
 
What would you guys recommend soaking the carbs in? And another noob question, how do i go about setting the timing??
 
Download a service manual. They are available on line for download and then buy a Haynes or Clymer manual to work through in idle moments.
 
Mac_2766 said:
What would you guys recommend soaking the carbs in? And another noob question, how do i go about setting the timing??
Click to expand...

At auto part stores, you can buy a big bucket of carb cleaner that you submerdge your carb into. Some guys also use lemon or lime juice? I am partial to the carb bucket myself but search for the lemon or lime juice idea if you'd like.
 
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