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Backfire and studder

This is a discussion on Backfire and studder within the Yamaha YFS200 Blaster ('88-Present) forums, part of the Performance /Technical category; well i went ridin yesterday and i was messin around in the woods slidin and goofin around, i had the RPM's up, and not over ...


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Old 10-12-2003, 02:02 PM   #1
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Default Backfire and studder

well i went ridin yesterday and i was messin around in the woods slidin and goofin around, i had the RPM's up, and not over revved cuz i know how to shift, and suddenly it starts studderin and then backfires, i let off the thorttle and get back on it, and it back fires and quits, we bump start it by pullin it with another quad but it studders and just runs like total shit, backfires and quits again, and it did the same thing this morning, so i dunno.....i think its the plug but the shop is closed today, any1 else have another idea?
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Old 10-12-2003, 02:18 PM   #2
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you cant take the spark plug out yourself and look at it?
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Old 10-12-2003, 02:20 PM   #3
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Default Re: Backfire and studder

Quote: Originally Posted by TTracinman68
we bump start it by pullin it with another quad
cough Honda 250ex cough


Nah, j/j. This guys Blaster is BADASS. Once he gets his KX sold he'll be getting the rest of his chassis mods. Its one of the best looking Blasters around and the Best Blaster I've seen in person,.
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Old 10-12-2003, 02:32 PM   #4
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u r a idiot, i never said i couldnt take the plug out myself, i meant to go and get a new plug and try that....iam done asking for help on here cuz theres only about 2 or 3 people on here that know anything....please kids...no 14 yr olds replying to my questions....
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Old 10-12-2003, 02:42 PM   #5
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im not 14, and im sure there is more than 1 store that carries spark plugs
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Old 10-12-2003, 02:50 PM   #6
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Attitude
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Old 10-12-2003, 02:58 PM   #7
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How does the spark look on the sparkplug you've currently got? If there's a good spark, then you may have to look elsewhere for the problem. Try filling your fuel tank with fresh gas, check your fuel air vent line, and go from there. Unfortunately there's a huge number of things that could be causing the problem. You could have even blown a base gasket, causing a lean condition which would make the engine run like crap.

Good luck on finding the problem.
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Old 10-12-2003, 03:33 PM   #8
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42F67N....it was ur choice to read it, so dont complain.....ok and blasterboy86....no places r open on sunday around here.....i know for a fact u cant get them from anywhere but cycle shops around here, i dunno about ur area...and if u didnt know it takes a certain plug, not just any old plug.....geez boy........edge, thanks for not accusing me of knowing nothing...it doesnt have that great of spark, i tryed another plug and it looked the same, i think the plug i tryed it with was fouled, its jetted right and everything, iam gonna go pick up a plug 1st thing tommorow and see if it fixes the problem, if not ill get back to you, edge.
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Old 10-12-2003, 06:09 PM   #9
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i know it takes a certain type of plug you dumb sob. there are lots of places to go to for a plug
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Old 10-12-2003, 06:15 PM   #10
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Quit the flaming please!!!
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Old 10-12-2003, 07:13 PM   #11
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blasterboy.....calm down.....iam not stupid....i know u cant find a BR8ES which is the plug for a blaster (which u might of known, but doubt it if u think u can buy a plug just anywhere) and is sold at cycle shops....cuz its a cycle plug....woo
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Old 10-12-2003, 07:21 PM   #12
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Now that we're all getting along now.....

I agree with edge - it sounds like it is running extremely lean - be it carburetor problem or a case sealing problem. Try spraying carb cleaner around all the gaskets and carburetor intake boot to see if it sucks it in and it changes how it runs.
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Old 10-12-2003, 07:35 PM   #13
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i dont see how i could of just blown a gasket out of nowhere, and it has always ran fine until yesterday when that happened, ran strong all day until then...
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Old 10-12-2003, 07:56 PM   #14
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Well TT........ SOMETHING happened.

Know what was funny about when the rod bearing went kablooey on my Warrior? The funny part is that it ran just fine the day before! And the tranny in my truck? Same deal!

SOMETHING happened - it could be anything! You have to do some digging and find out which 'anything' is broken! We're just trying to help. :)
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Old 10-12-2003, 08:07 PM   #15
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TTracinman68 everytime you post your attitude SUCKS!
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Old 10-12-2003, 08:11 PM   #16
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then dont read my post's
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Old 10-12-2003, 08:13 PM   #17
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I can see where this post is going.
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Old 10-12-2003, 08:14 PM   #18
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if u noticed 42F67N every1 that posted acctually helping and not trying to imply i dont know anything at all, like blasterboy did, i was nice to every1 else, and u shouldnt of read it, or replied if u didnt like my attitude
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Old 10-12-2003, 08:14 PM   #19
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Quote: Originally Posted by TTracinman68
i dont see how i could of just blown a gasket out of nowhere, and it has always ran fine until yesterday when that happened, ran strong all day until then...
What do u mean blow a gasket out of nowhere. Its gotta happen. If you were riding thats all it takes. I would check your jetting and your airbox and carb boot and from the carb to the engine. My warrior had a tear in the piece from the carb to the engine and it gave it a mid throttle studder.
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Old 10-12-2003, 08:28 PM   #20
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Which part of "Quit the flaming please!!!" did you not understand???????????

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