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  #1 (permalink)  
Old 04-08-2007, 09:04 PM
Weekend Warrior
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Default Raptor backfiring won't start cranks great

2002 660 raptor. got used.push start it & it ran.Needed starter bearing.So opened up & bearing & all gears had been removed.So I put in new bearing 52 tooth gear behind bearing.I put in all starter gears & bearings.All seems good.New battery,new starter handelbart switch got rid of E-brake (UNPLUGED)put new clutch lever (unpluged & pluged ito itsself.Now I try to start & it has GREAT compression ,getting fire cranking like a mo@#%#...but it backfires & cranks good but wont hit to start.It wants to start soooo bad.Its got to be simple.help.I havent tried to bump start again after all my parts replacement.HELP!!!one more thing it is leaking gas from one side of carb.if you are on it it is left carb.
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Old 04-09-2007, 12:36 AM
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Default Raptor backfiring won't start cranks great

th first thing i woulf try is to make shure all ur grounds are hooked up like to the starter and all and than try the carb..if it ran fine b4 and u didnt touch the carb it should still run fine..
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Old 04-10-2007, 01:42 PM
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Default Raptor backfiring won't start cranks great

All grounds are good as I can tell.Anything else...anyone??
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Old 04-11-2007, 02:17 PM
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Default Raptor backfiring won't start cranks great

are you sure that your timing is all correct on the gears the fuel sounds like maybe the firing is not correct
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Old 04-11-2007, 06:56 PM
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Default Raptor backfiring won't start cranks great

Could I have messed up the timing by putting a new one way starter & starter gears?As for the gears was I suppose to line something up?I didnt see anything?I juast put them all in & made sure they all fit right & buttoned it up.Help...lol
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Old 04-15-2007, 07:08 PM
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Default Raptor backfiring won't start cranks great

don't know if it will help, but my raptor was doing this, and all it need was the valve lash adjusted.
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  #7 (permalink)  
Old 04-16-2007, 12:41 AM
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Default Raptor backfiring won't start cranks great

My '02 Grizzly 660 was doing the same thing when I picked it up used a couple months ago. I adjusted the valves (the intakes were way too tight) and now it runs like a champ. Give them valves a check.....
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Old 04-17-2007, 03:44 AM
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Default Raptor backfiring won't start cranks great

i`d make sure you got that clutch switch wired right.mine does the same thing when i try to start it with the parking brake engaged.
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Old 04-17-2007, 10:41 AM
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Default Raptor backfiring won't start cranks great

Yeah,all my switches are in good order.Bark brake is unpluged,clutch sensor is pluged into itsself.I tried to bump start & everything locked up.My tires started sliding & my starter ,the small little gear on it LOCKED up! So is my starter burned up?Can it be rebuilt?I am wanting to just cry...one thing after another.So what do you guys think locked up my starter?Did my new one way not work right...what does it suppose to do anyway,does it enguage or what,how did I get locked up?Thanks
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Old 04-17-2007, 11:38 PM
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Default Raptor backfiring won't start cranks great

its probaly your carbs; I had the same bachfire problem and would only stay on with the choke. clean them out with carb cleaner
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Old 04-17-2007, 11:38 PM
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Tags
03, 66, 660, backfires, backfiring, caberator, carb, cranks, lash, raptor, run, start, turns, valve, wont, yamaha



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