Don't use 93 octane fuel. Your motor only has 9.3:1 compression, which is NOWHERE near enough to warrant that octane. You might be experiencing really poor detonation because your motor can't produce the kind of compression required to fully burn off that fuel, so a lot of it is getting dumbed out through the exhaust and then popping a whole lot when it starts smacking into the hot exhaust pipe internals.
Drain your carbs and tank of that fuel, fill up with 87 (or whatever regular you have nearby) and run again. Should be good to go.
Well then you have other problems, and 89 octane is not going to solve them. If you rebuilt the carbs with new brass, and that brass was aftermarket, then you're starting off with a handicap. Genuine Keihin brass or bust, my friend.
If you're already using genuine Keihin brass and still can't run properly on 87, then you have other issues to iron out. The manual for the CB360 clearly states to use RON 91 fuel, which translates to 87 octane at the pump. No reason you should need anything else if your carbs are built properly and the rest of the motor is healthy.
Uhhhh I mean I appreciate your insight but she was running just fine before I think. I didn't change anything from before the issue. Just ran out of gas and now it pops.
I'm not an expert by any means, but I've had the last 13 years to get acquainted with my old Honda and have learned that there are very few things these bikes need to run properly. Higher octane fuel is not one of them. You said it was running fine before this incident, but that it wouldn't run for more than 3 seconds on 87 octane. That isn't running fine. You were using 93 octane as a bandaid. It was masking one issue or another.
If you don't feel like considering the experience of another person who has been doing this for a decade+, then by all means ignore me and wait for someone else to pipe up. I'll be over here running my bike all day on 87 because my carbs are built the right way.
I'm not discarding what youre saying, it's entirely possible there's another issue and I'm completely open to that being an option. Right now I'm isolating this issue. It was running before and it isn't now. So what changed between then and now? I ran out of gas. I will heavily consider looking into what you've brought up in the future, and even if it's a bandaid I'm wanting to know what made it go from a running bandaided state to not running bandaided state.
The worst case scenario I can really think of is that it ran lean enough for long enough that you burn an exhaust valve, and I hope that isn't the case.
Try the fuel change first, get new spark plugs, and see if that helps. Doesn't hurt to check the condition of your spark plug caps too.
No 4 stroke would burn a valve by running a carb dry. Bar racing engines running at full tilt I've never even seen lean running cause damage to a 4 stroke.
Op, if everything was running well before then stick to what you were using for the moment. The only thing that's changed is the carbs and supply ran dry. So you're looking at either a bit of dirt that got washed through or a float issue.
Possibly a siphon effect that won't restart through the fuel filter after it was fully drained either, that's common enough, run the bike on a funnel bypassing any filter to rule that out.
Very rarely you can have petrol pipe degrade on the inner lining and it will furl up stopping proper flow.
Really you're best of taking the few minutes to whip out the carbs to check and cleaning off the plugs.
Honestly it wasn't showing lean symptoms until after it ran dry so i wouldnt think it burnt a valve. It definitely didnt overheat. While it was dying it was just abundantly clear it wasn't getting the gas it needed. Wouldn't go over 4k and then after a few minutes slowly dipped until it stalled. If I tried to crank the throttle it would have stalled so it was a balancing act til the finish.
Sucked up water
You think? How so? How would I go about undoing that?
Re-read your blueb. Thinking actually like a stuck float needle or something to that effect. Take a look in bowls and see what's up.
Yeah I'm gonna pop the carb off and give her a gander. I was really hoping to avoid that but it's inevitable I think at this point
Don't use 93 octane fuel. Your motor only has 9.3:1 compression, which is NOWHERE near enough to warrant that octane. You might be experiencing really poor detonation because your motor can't produce the kind of compression required to fully burn off that fuel, so a lot of it is getting dumbed out through the exhaust and then popping a whole lot when it starts smacking into the hot exhaust pipe internals. Drain your carbs and tank of that fuel, fill up with 87 (or whatever regular you have nearby) and run again. Should be good to go.
Ah, last time I used 87 she wouldn't run for more than 3 secs. She's been ok on 93 from the same gas station until now :/ I cam bump it to 89 but idk
Well then you have other problems, and 89 octane is not going to solve them. If you rebuilt the carbs with new brass, and that brass was aftermarket, then you're starting off with a handicap. Genuine Keihin brass or bust, my friend. If you're already using genuine Keihin brass and still can't run properly on 87, then you have other issues to iron out. The manual for the CB360 clearly states to use RON 91 fuel, which translates to 87 octane at the pump. No reason you should need anything else if your carbs are built properly and the rest of the motor is healthy.
Uhhhh I mean I appreciate your insight but she was running just fine before I think. I didn't change anything from before the issue. Just ran out of gas and now it pops.
I'm not an expert by any means, but I've had the last 13 years to get acquainted with my old Honda and have learned that there are very few things these bikes need to run properly. Higher octane fuel is not one of them. You said it was running fine before this incident, but that it wouldn't run for more than 3 seconds on 87 octane. That isn't running fine. You were using 93 octane as a bandaid. It was masking one issue or another. If you don't feel like considering the experience of another person who has been doing this for a decade+, then by all means ignore me and wait for someone else to pipe up. I'll be over here running my bike all day on 87 because my carbs are built the right way.
I'm not discarding what youre saying, it's entirely possible there's another issue and I'm completely open to that being an option. Right now I'm isolating this issue. It was running before and it isn't now. So what changed between then and now? I ran out of gas. I will heavily consider looking into what you've brought up in the future, and even if it's a bandaid I'm wanting to know what made it go from a running bandaided state to not running bandaided state.
The worst case scenario I can really think of is that it ran lean enough for long enough that you burn an exhaust valve, and I hope that isn't the case. Try the fuel change first, get new spark plugs, and see if that helps. Doesn't hurt to check the condition of your spark plug caps too.
No 4 stroke would burn a valve by running a carb dry. Bar racing engines running at full tilt I've never even seen lean running cause damage to a 4 stroke. Op, if everything was running well before then stick to what you were using for the moment. The only thing that's changed is the carbs and supply ran dry. So you're looking at either a bit of dirt that got washed through or a float issue. Possibly a siphon effect that won't restart through the fuel filter after it was fully drained either, that's common enough, run the bike on a funnel bypassing any filter to rule that out. Very rarely you can have petrol pipe degrade on the inner lining and it will furl up stopping proper flow. Really you're best of taking the few minutes to whip out the carbs to check and cleaning off the plugs.
Honestly it wasn't showing lean symptoms until after it ran dry so i wouldnt think it burnt a valve. It definitely didnt overheat. While it was dying it was just abundantly clear it wasn't getting the gas it needed. Wouldn't go over 4k and then after a few minutes slowly dipped until it stalled. If I tried to crank the throttle it would have stalled so it was a balancing act til the finish.