your mag is bad .... unplug you charge coil and try to run it ...its the one with three yellow wires comeing from mag side....when it gos bad on a ds some times it trips ou the cdi unit ......i had the same deal happen o me.....brp rocks...

nissan1995

August 27, 2008

take it to a professional shop to look at it...end of problem

alwill

March 05, 2008

it's diafram in top of carb. hole in it .pulls slide up when full throt not going up now. happend to my ds

do-it-big

February 22, 2007

try puttin the air box cover back on. its boggin out cus it has so much air

pugads650

February 21, 2007

ive already changed the spark plugs rebuilt the carb and cleaned it ive changed out the cdi and rectifier but still no luck.

6414cef2

February 21, 2007

What is a 450 ex?

6414cef2

February 21, 2007

It's definatley running out of fuel, just drop the bowl off the carb and clean all jets and float assy.

srt4ssuck

February 21, 2007

Uhh... I wouldn't pay too much attention to that last guy. You have a fuel delivery problem of some sort. It could be as easy as draining the gas, cleaning the carb and replacing the fuel filter if you have one. If you believed that first guy you might want to start with making sure the fuel valve is actually turned on...

ldecharmoy

February 21, 2007

i had a friend with a honda 450 ex and it sounded just like that and all he had to do was change the oil, but i think it is the battery or you need a new starter. I will ask my friend and get back to you, he works at a atv repair shop in texas. Thanks Luke

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pugads650
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Added: Feb 21, 2007

2001 bombardier ds650 help!!!

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