Hi all,

I'm interested in buying my brother-in-law's 02 Warrior. It is all apart right now (plastic is all off). This quad is/was in mint condition. Less than 1000 miles on it. Last year he was riding it and while riding the motor just shut off. He could not restart it.

It turns over, it has spark, and it has fuel. He thought something happened with the timing and pulled the timing chain cover off. However, he said the timing chain looks fine.

Any ideas what to look for next?

Thanks,

The IT Dude

 

my Griz just stopped running once but it was the gas tank vent tube clogged which vapor locked the gas system,but if your getting fuel thats not it

did you do a compression test?

 

Man that could be anything. I'd start with making sure of all your electrical connecitons. Warriors are notorious for bad grounds. Also, you might have a bad run-off switch on the handlebars. This is one time I believe paying a few bucks to the dealer could save you $ in the long run. You can start replacing parts left and right and never find the problem. If he has ever taken it through water, given the age of the machine, I'd still look to the grounds.

 

Yes,

I forgot to mention that he also checked the compression and it was good.

Dragginbutt,

Good thought... I'll tell him to check his grounds.

 

thats a weird situation,spark and fuel but no run

try this,,,,in the dark either at night in the diveway with no outdoor lights,or at night in the garage with the lights out try cranking it over and look to see if you have any electrical arcing,you may have a cracked wire thats robbing juice,and even though the plug shows spark,it may not be enough to ignite

 

also,,,when you say "it has fuel",,,have you removed the air filter and made sure your getting fuel ,if its getting sufficiant fuel,and not starting while continuously turning it over it should result in a flood situation,if its not flooding then it may be that its not getting enough fuel

did you replace the fuel filter,their cheap and is no more than basic maintenance,,,,also the gas valve may have sludge restricting fuel flow

 

$10 says you don't have spark due to grounded wires at the rear of the frame. Yamaha skimped on the wire, making them too short and they rub tight against the frame, eventially rubbing through the wire insulation and grounding out. Check real good all around where the CDI box is.

 

he says it HAS spark,which makes it so perplexing

 

Hey guys,

All good things to check. Thanks for the help!

Now I just have to get him to put it back together (or do it for him) so we can check those things. I'll post back when we find out what it is.

Thanks!

 

Don't forget wires can carode inside the plastic casing and you may never see it too... Chasing electircal problems can get real frustrating and expensive if someone else is doing it for you.