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My FSE 450 has no spark, I have changed the plug still no spark. Need a diagram.

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When Moter gets hot it won't idle then stalls when open throttle

Hello Ian. I would check the big three. Compression, spark and fuel. Once engine warms up and dies I would immediately check compression and compare it to stock spec. If that is good I would hook up an inline spark tester and run unit , while observing spark tester to see if you lose spark. Then I would check for fuel obstructions, lines, carb, etc. This should greatly narrow your problem. If you have questions, just post in this thread and I will get back to you. Good luck.

I’m happy to assist further over the phone at

Feb 27, 2014 | 2005 Gas Gas EC 450 FSE

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How do you change the spark plug on the 2003 yamaha 450

Remove seat - Remove Tank - Remove spark plug coil (just pulls off) Then with correct spark plug wrench you can undo the spark plug and replace with new one( dont feel the need to over tighten the new plug just tight is fine!) Then push coil all the way back on - install the tank and then install the seat - Ready to go!
good luck regards Jamie

Jan 07, 2011 | 2003 Yamaha YZ 450 F

1 Answer

How to change the spark plug wires in a lexus 1996 lx 450 need a diagram to show where the wires go

For the 1996 Lexus LX450 4.5L In-Line 6-Cylinder:

Firing Order:



Let me know if this helped....

Apr 18, 2010 | 1996 Lexus LX 450

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Hi i have a 2002 gas gas fse 450 replaced starter motor bushes and sprag clutch and battery. and it wont start when i kick the bike over the engine feels tigh is it because the engine has not been started...

it could be your starter cluch draging take it off again and check it out or you will burn out the starter trying to start the engine if all is well there put a fuw drops of engine oil into the pot down the spark plug hole and try kicking the bike over without a plug in it till it frees off

Jan 23, 2010 | 2005 Gas Gas SM 450 FSE

1 Answer

The motorbike starts to backfire and after a while it completely stops as if the battery is overheated

You can trouble shooting it with these methods..
1.check your spark plug.
2. If it is CDI operated,replace it.
3. If it is still Contact Point operated:Check its timing,and if you sure the timing is good but nothing's happened,try to replace the condenser.

Nov 05, 2009 | 2005 Gas Gas EC 450 FSE

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Gas gas 450 fse 2005 lcd spedo turning off when cold outside

I have encountered this on more than one occasion. My experience has been a solder joint on the internal circuit board that is non conducive to cold weather. It has something to do with shrinkage on the board. Although I have only been able to track the exact problem one time, (a small crack in the panel board), all other times I have had to replace the actual unit.

Dec 15, 2008 | 2006 Gas Gas EC 450 FSE

1 Answer

Thermo Fan

anyone know where this is located. Or is there another problem I should be looking at?Temp sensor is located at the left rear of cylinder head. Fan relay is controlled by the EFI computer. Does your fan run if you hook it up directly to the battery? To have the fan running by jumping/bypassing the relay you need to have your engine running. There is a wiring diagram in the '05 user manual,,,

Nov 10, 2008 | 2005 Gas Gas EC 450 FSE

1 Answer

White smoke from ignitioncoil

and it still was working. When i got home i started the gasser several times trying to find a problem when suddenly white smoke came out of the ignitioncoil. Changed the sparkplug and the ignitioncoil did find that it's the same ignitioncoil as in Volkswagen golf from year -00 !!!! Of course the gasser still don't run as i don't get any spark Now some ideas anyone ? Is the coil the right one ? How to measure the electrical system ? Thanx for any help at allSorry to hear that your beast is offline, but problems are there to be solved. Does your fuel pump run when ignition is turned on? If not, try switching the two relays under the right side panel. I assume your starter is crankin the engine, that would at least indicate that the main fuse is all right. If not, the fuse is located inside the starter relay. Are you familiar with reading an electric schematic? There is a good schematic in the user manual. If not, your welcome to call me, Anders. You'll find my number through Eniro.,,,

Nov 10, 2008 | 2006 Gas Gas EC 450 FSE

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