450 won't start please help

O

Oldcow

New member
Finally have some sign of spring and I can't get the bike started. It started fine a month ago in a warm garage but has not been touch since. The battery is weak from trying so I am working with the kick starter. Is there a trick with the 45o? Its a 2006 and I have kicked my heart out and not even a sign. Its my first FI bike so maybe I am missing something. I did a bit of a search but did not find anything. I have read that the 2004 and earlier models were a challenge to kick start so maybe the 06's are as well? I hope I can get it out before it snows again...
Thanks
 
You might want to change the spark plug.

I'd give this a shot:

Turn ignition off and kick it round for a few rounds with wide open throttle, to clear out excessive fuel. Kick slowly just past the TDC, and the cams will help settle the crank in a new position.

Support your bike so you can stand on the pegs.

Take up the slack in the kick starter, turn ignition on, open throttle wide open(if cold)


And kick it smooth, firm and fast through the whole stroke.

If it does not start, repeat from the top. You might try no throttle too.
 
Even though it's fuel injected, it can still be started with some throttle on and yes hook up some jumper cables. How old is the gas in the bike? If it's been sitting at least all winter then maybe replacing the old fuel with fresh may help. There's a small chance that if you had your tank off, that when you put it back on that the cable harness on the ECU on the bottom of the tank may not be snapped into position fully, this could also cause it to turn but not fire.
 
I've jump started my 450 many times, actually remove the kick starter since it has proved to be rather useless for me. Have you even had a pop from it yet? If it never popped then you may need to dig deeper. Mine would always pop and sputter even when it wouldn't start. If I didn't have a pop it was because there were other issues.
 
Thanks for all the replies. After kicking, kicking, kicking (you get the picture), I recharged the battery and after a few attempts, it started. I hope I don't run into this problem in the woods.
The stand piss me off so bad that i took it off, cut is shorter, took the bend out of it and did the chain link mod. Now I can somewhat stand on it and kick. Why such a great bike would have such a terrible stand on it is beyond me.
I will give a first ride review asap.
Thanks again
 
Never been any problems jump starting them. On the 05's thats the only way we could get em going when it was below 30 degrees out. My 07 has always started even at 20 degrees.
 
I am having issues staring the bike when hot, not all the time, but often enough. The bike is running great other then that but its annoying when I stop, I have to let it cool down and then it starts. It will sometimes start if you turn the key off, kick it several times to burn off the gas, turn back on and away it goes. Today was different, I waited 5 minutes and it finally started with with the throttle wide open.
Any ideas?
 
I was tinkering a bit with ecu trim adjustments on my 05, and I got very similar problems to what you are describing. What I did to GET the problems was increasing the trim number from factory set '16' to new '29' to make it run a little richer. Did that because I thought it was running a little lean/hot. To accommodate the richer trim I adjusted the idle adjuster screw slightly, from a TPS readout of 5,7 to new readout 6.2 to make it idle cleanly.

With this new richer trim the bike was horrible to start when warm. Had to kick it out with ignition off several times. Later I went back to factory trim setting, but kept the new idle adjustment setting. Bike now idles a little higher than stock, but not too much. But as a bonus it has become very easy to start, both cold and warm. And yes, a lot easier to kick start too.

Before I did any changes I occasionally had warm start problem, but now it fires right up, I don't even have to wait for the fuel pump primer cycle to complete before hitting the e-button, just key on and hit the button at the same time.

Perhaps this can aid you in your diagnosis.
 
bergerhag said:
I was tinkering a bit with ecu trim adjustments on my 05, and I got very similar problems to what you are describing. What I did to GET the problems was increasing the trim number from factory set '16' to new '29' to make it run a little richer. Did that because I thought it was running a little lean/hot. To accommodate the richer trim I adjusted the idle adjuster screw slightly, from a TPS readout of 5,7 to new readout 6.2 to make it idle cleanly.

With this new richer trim the bike was horrible to start when warm. Had to kick it out with ignition off several times. Later I went back to factory trim setting, but kept the new idle adjustment setting. Bike now idles a little higher than stock, but not too much. But as a bonus it has become very easy to start, both cold and warm. And yes, a lot easier to kick start too.

Before I did any changes I occasionally had warm start problem, but now it fires right up, I don't even have to wait for the fuel pump primer cycle to complete before hitting the e-button, just key on and hit the button at the same time.

Perhaps this can aid you in your diagnosis.
Click to expand...

Are you suggesting that setting the idle up is what you think helped out? I am ready to try anything. My biggest concern is killing the battery and not being able to kick start it in the wilderness.
 
No, I was both thinking you're running to rich and need to open up the throttle a little.. Try reconnecting the blue/yellow wire under the tank, that'll put it in the lean map. If that gives you an easier warm start you need to get hold of the technoresearch VSTDS software.(or keep it on the lean map)
 
Check the thermostat - this went on my mates bike and was near impossible to start from cold. Was OK when hot though but yours may have failed the other way around.

There's a good chance you could buy a longer kickstart as well but to be honest if you've completely flattened the battery trying to start it then you have less chance with the kickstart - also the battery needs some juice to allow it to be kickstarted to prime the fuel pump I believe.
 
With the Techoresearch software it is possible to get a readout in degrees Centigrade from both air and water temperature sensors.
 
I was always able to jump start mine very easily. It never started for shit with the kick though. The battery does need to be strong and cracking the throttle does help also.
 
Sorry to intrude, but...
Just in case anyone is interested, I have the Magnetti Marelli MotorBike Diagnostic Program (including all the disks, and also loaded into a laptop).
It sure makes having a GasGas 4-stroke much easier to work on.

If anyone is interested in purchasing this, I would like to sell it.

Thanks,

Jim
 
bergerhag said:
No, I was both thinking you're running to rich and need to open up the throttle a little.. Try reconnecting the blue/yellow wire under the tank, that'll put it in the lean map. If that gives you an easier warm start you need to get hold of the technoresearch VSTDS software.(or keep it on the lean map)
Click to expand...

I am only good at basic maintenance on my bike so it looks like I will have to take it to the dealer as the problem is getting worst. Forgive my ignorance but what does the "technoresearch VSTDS software" do? and if I left those wires plugged in, the bike would not run as strong correct?
thanks
 
You must log in or register to reply here.

Similar threads

H
2009 450 won't start.
Replies
0
Views
31
Homer
H
N
Jetting EC 125
Replies
2
Views
190
Noobi06
N
J
GG 300r- Help, cold start weird issue
Replies
3
Views
993
Jinx_pt
J
V
GasGas 2018 E-Start vs new Rieju E-Start
Replies
6
Views
239
webmaster
webmaster
N
Snapped Mainjet
Replies
9
Views
160
Wbdisco
Wbdisco
Back
Top