*fixed* explain to me why my idle is dying on my fuel inject

[intotherain]

Why? I have a 2005 FZ6. It's fuel injected. there's no choke or idle adjuster pin or anything but today my bike started to die in the city. After a short jaunt on the highway I came off and came to a stop sign. The bike died. I tried starting but it wouldn't budge.



I pulled off to the side and had to wait 5 minutes before it would start again. It ran fine for the next 10 minutes. Then at slow speeds the RPMs were like gurgling, it was under 1000 (my idle is 1350) and wanting to die. I had to pull over again and wait 5 minutes before she would start.



Then this time, THE RPMS STARTED TO DIE WHILE I WAS RIDING!!!! I WAS IN 2ND GEAR DOING ABOUT 40 MPH WHEN THE RPMS STARTED TO DIE!! I was so confused. I had to put it in the friction zone and rev up towards 10,000 RPM to get the bike to keep running. I had no idea what was wrong.


I took the backroads home and finally here I am. What is wrong?? Isn't there a computer chip that should be controlling all this? and this baby is almost new! It had 8000 miles when I bought it and now it has 9,000...

Should I take this into the shop? I have no idea what is wrong. There's no oil leaking or anything! The engine temperatures were normal as always right smack dab in the middle. I just filled the bike with gas before I left crusing around. I filled it with 91 premium gas. (like I always have done)

Someone please help me because I'm scared to ride my bike now!

[mydlyfkryzis]

Sounds like a fuel issue.

#1 in my book is check the fuel vent. You can check this by running around locally until it starts to die. Open the fuel tank filler cap. If it starts to run fine, you have a vent problem. Depending on how your tank is vented, it could be the cap (Unlikely on a newer bike), a crimped hose somewhere, especially around the fuel evaporator canister, or the evap. system valve, or a vacuum leak.

The vent issue cause a vacuum in the tank and then the fuel pump can't deliver enough presuure for the injectors.

It could also be a fuel filter. Check that too.

[intotherain]

Could it be because I put the wrong fuel in? I just read the manual and it says I should buy

" Use only unleaded gasoline. The use of leaded gasoline will cause severe damage to internal engine parts, such as the valves and piston rings, as well as the exhaust system. Your Yamaha engine has been designed to use regular unleaded gasoline with a pump octane of 86 or higher, or a research octane of 91 or higher"

I used 91 premium... but I'm guessing 91 premium is still unleaded right?

I will try your first method tomorrow. So ride around until it sputters then I will open up the gas tank filler cap.... Wait, I don't know if I can do that, I have only one key and that will not come out without the filler cap completely in the tank.

[thespirit]

Some gas caps don't really require that key. Some you can open with a screw driver, at least on the old bikes. (Maybe I shouldn't mention that ) ...

You may have gotten some bad gas too. Water in the gas can cause that if enough starts to get into the carb... However, I would think that it wouldn't start back up at all.

There are a lot of possibilities. Could be heat related to where the heat is killing your ignition or a coil. But like mydlyfkryzis said, it could be as simple as a vent problem. When was the last time you checked your plug wires and plugs?

[intotherain]

Some gas caps don't really require that key. Some you can open with a screw driver, at least on the old bikes. (Maybe I shouldn't mention that ) ...

You may have gotten some bad gas too. Water in the gas can cause that if enough starts to get into the carb... However, I would think that it wouldn't start back up at all.

There are a lot of possibilities. Could be heat related to where the heat is killing your ignition or a coil. But like mydlyfkryzis said, it could be as simple as a vent problem. When was the last time you checked your plug wires and plugs?

I bought the bike one month ago at 8000 miles. I have done nothing except degrease and lube the chain twice.

It's not hot around here. Today it was 64 degrees for most of the day. The oil temperature was at medium.

[thespirit]

I bought the bike one month ago at 8000 miles. I have done nothing except degrease and lube the chain twice.

It's not hot around here. Today it was 64 degrees for most of the day. The oil temperature was at medium.

Just because it was only 64 degrees doesn't mean the engine isn't getting hot enough to cause a failure somewhere.

[intotherain]

I bought the bike one month ago at 8000 miles. I have done nothing except degrease and lube the chain twice.

It's not hot around here. Today it was 64 degrees for most of the day. The oil temperature was at medium.

Just because it was only 64 degrees doesn't mean the engine isn't getting hot enough to cause a failure somewhere.

Anyways, if it was a problem by heat, would it fix it self? I think it might of gotten hot.. I was trying to power wheelie a few times in the back roads, but nothing special I revved probably up to 9,000 RPM about 6 times trying to wheelie. That was about 15 minutes before the failure.

I don't think my bike has a carb.. It's fuel injected.

[thespirit]

Anyways, if it was a problem by heat, would it fix it self? I think it might of gotten hot.. I was trying to power wheelie a few times in the back roads, but nothing special I revved probably up to 9,000 RPM about 6 times trying to wheelie. That was about 15 minutes before the failure.

I don't think my bike has a carb.. It's fuel injected.

Yes, if it's a problem with heat, it can fix itself after it cools off. The engine gets really hot. Anything near it can be affected by that heat.

And no, it doesn't have carbs, I misspoke myself. However, water will affect fuel injection the same as it does on carbs.

I don't think 9,000 RPM should hurt it. Might get it really hot, but shouldn't hurt it. Is it doing anything else, even when it's running right, that it didn't do before?

[intotherain]

Anyways, if it was a problem by heat, would it fix it self? I think it might of gotten hot.. I was trying to power wheelie a few times in the back roads, but nothing special I revved probably up to 9,000 RPM about 6 times trying to wheelie. That was about 15 minutes before the failure.

I don't think my bike has a carb.. It's fuel injected.

Yes, if it's a problem with heat, it can fix itself after it cools off. The engine gets really hot. Anything near it can be affected by that heat.

And no, it doesn't have carbs, I misspoke myself. However, water will affect fuel injection the same as it does on carbs.

I don't think 9,000 RPM should hurt it. Might get it really hot, but shouldn't hurt it. Is it doing anything else, even when it's running right, that it didn't do before?

ummmmm.... I don't think so. Oh yeah, if you know how it died, I was coming off the highway at about 83 MPH and slowly slowed to 0 mph. I pulled the clutch in as I was shifting down from 4 to 1. But then right there I heard my engine go out. It just died. I wasn't sure if it was my ear plugs muffing the sound but it died. I tried starting it again but it wouldn't budge. I walked it to the side walk and kept trying to start it. It didn't start.


I put the bike on the center stand and checked the oil. I couldn't check it, there was bubbly oil on the whole thing.


About after 5 minutes of being pissed off, I started it again and it started fine. For about 10 minutes the bike ran fine. I stopped for a second for a drink of water and when I started out again I could feel the engine not getting enough power with my throttle.. It's a weird feeling I can't explain. I twist the throttle but the power that should come out didn't come out.

About 5 mins of city riding later, I couldn't let it idle by it self because it was sounding like a dead dog. I had to rev it high and keep blipping the throttle to keep it alive.



I pulled over and rested for about 10 minutes. I started her up again and she seemed fine. It was a little bumpy but otherwise it was fine. I'm hoping it was a heat problem and fixes it self next time.

You know what? I'll go see if it's okay now. I'll be back in an hour.

[thespirit]

That could be a lot of things. When it starts to get hot, all sorts of problems can creep up. Sometimes the ignition coils can act up when they get hot and they are usually mounted above the engine under the gas tank. Heat can build up there much more than any other place. Could be a bad wire too. While all the lights and stuff work, it could short out the ignition system.

It could even be the on board computer going bad - or a loose connection.