WTF guys?? Help me out

[pj4553]

Here's the story.. A few weeks ago my quad wouldn't start. Ok so I did a bit of trouble shooting and it wound up being a fouled plug. Pretty common right? I've ridden a few times since then with no problems what so ever she ran great. Today I rode with my buddies for a few hours and after a couple hours my Raptor started running like complete shit. It was missing, sputtering, and wouldn't idle but just kill if I let off the gas. I had to get towed in. I figured I'm running rich and fouled another plug. Well I get home and start it the bike ran great  Has this happened to anyone else? I'm scared to go riding because sometimes we go long distances and I don't want to get stranded in the middle of the Lacombe bayou at night  :'(

[realdeal]

what year.
have you tried different maps for you mods on the pcIII

[exentix]

what year.
have you tried different maps for you mods on the pcIII

im assuming 07 by the plastics

[grap660]

hey pj it probely is your maps

[pj4553]

It's an 07. I had Jerry from Holeshot Designs pre-map my PC3 for my duals and intake. I never even loaded the software on my computer b/c I really have no idea how to custom tune or set a map.

[Bert]

Is the radiatior fan working?

[pj4553]

I think so.. Do you think it was overheating? It did start acting up after some slow crawling over obsticles that required high revs.

[Bert]

 I was thinking a vapor lock issue since it seemed to run ok after it cooled down. 
Is your gas tank vent tube clear & free of obstruction ? 

I checked my fan my throwing a tarp over my quad & let it idle until I heard the fan kick in.  If the fan isn't working then the gas could be heating up inside the tank & be way too warm possibly causing issues with vapor lock.  The warm gas might  be flashing off gases from the additives & whatever else they put in gas these days.  The 3 balls in your gas cap act as your vent valve, next time the quad is hot & won't run listen while removing the gas cap, it shouldn't sound like air escaping the gas tank, a "whoosh" noise.   If you hear a whoosh noise remove 1 of the 3 balls in your gas cap & try that after verifying that the gas tank vent hose is clear & open.  All this may seem strange but the early 06's had faulty fuel pumps & had issues in different areas.  I may be way off here but I gave it a shot, let me know what you find 

A tip I read in Quad Magazine - cut all vent hose ends at a 45 degree angle as its much harder for them to plug.  Examples, gas tank vent hose, radiator fan vent hose, coolant overflow hose,  sometimes spiders & bug can plug a hose

[pj4553]

 Cool man I'll check that out. I noticed a hissing sound coming from somewhere after I shut it off today. It sounded like a tire leaking. Maybe it was gas vapors?

[Bert]

I'm trying to remember a good way to test your fan?
I've read about several methods & there was a small amount of controversy with each method......due to the machines electronics 

Be sure to check all fan connections/fuses also

[pj4553]

Well I rode a bit today. It never died on me and idled fine but at constant speed at low rpm's it felt jerky and would miss  . The fans never came on but I didn't ride hard or for a long period of time. I'm going to go out in a bit and check my plug, connections, etc..

[pj4553]

Connections seem good. Here's my plug after about 5 hrs of riding. Does this look ok 

[pj4553]

Oh.. and I installed my PC3 software. How do I upload my current map to my computer so someone can take a look at it for me?

[RR34]

picture isnt clear enough for me to tell but the little porcelain donut around the electrode  should be chocolaty brown.

[pj4553]

I know sorry it's a crappy pic. I had to used my blackberry. It's all pretty black. Do you want me to try and get a better pic with an actual camera?