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banshee_jaquesy
4fiddy Racer
Joined: 25 Mar 2009
Posts: 208
Location: cardiff south, newcastle
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 Posted: Sun Aug 23, 2009 10:19 pm Post subject: missfire on my banshee. |
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| my banshee missfires, coughs and splutters in top end and barely runs at idle, but only on the left cylinder. it has plenty of compression, spark plugs are fine, spark is great, carbys been cleaned. i dont know what else it could be!!! please help. |
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Sponsor
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4stroker
Joined: 15 Jan 2007
Posts: 1420
Location: North Queensland
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| Posted: Mon Aug 24, 2009 7:54 am Post subject: |
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if everything is as you say it is, then it could be an air leak around the intake manifold/reed gaskets.
start it up and let it idle, and spray aerostart or something around the intake area. youll know if its leaking!
also take the ignition cover off and spray in behing the flywheel while its running, to check if its the left crank seal.
other than that, what jetting is it running? and what condition are the reeds themselves in?
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2002 SE Banshee |
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greenhuman
Roostin Away
Joined: 12 Feb 2006
Posts: 980
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| Posted: Mon Aug 24, 2009 10:11 pm Post subject: |
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Do you have standard carbs?
Make sure you put the little black rubber cross-over tube between the carbs back on. |
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aitchy
50cc nipper
Joined: 10 Aug 2008
Posts: 19
Location: Southern Flinders S.A
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| Posted: Tue Aug 25, 2009 9:14 pm Post subject: Re: missfire on my banshee. |
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| banshee_jaquesy wrote: | | my banshee missfires, coughs and splutters in top end and barely runs at idle, but only on the left cylinder. it has plenty of compression, spark plugs are fine, spark is great, carbys been cleaned. i dont know what else it could be!!! please help. |
Dont be fooled by the compression
sounds like the same problem I had with mine
Same , Left side/ Plenty of compression , after 2 days of fault finding
I couldnt put my finger on it.
I bit the bullet and pulled her down and found this,
Damn it here we go again 
Aitchy.
_________________
"03" Banshee
FMF Gold series Fatty pipes
Shaved head
30mm OKO D-Sliders
Force reeds & Spacers
IF YA AINT GOT A BANSHEE , YA AINT GOT S@*T!! |
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4stroker
Joined: 15 Jan 2007
Posts: 1420
Location: North Queensland
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| Posted: Wed Aug 26, 2009 7:33 am Post subject: |
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mate your compression tester must be faulty if that was showing good compression!
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2002 SE Banshee |
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banshee_jaquesy
4fiddy Racer
Joined: 25 Mar 2009
Posts: 208
Location: cardiff south, newcastle
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| Posted: Wed Aug 26, 2009 10:41 am Post subject: |
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yeah, i think your tester was abit faulty lol. i dont think it will be that, i just rebuilt it!!! i think ive found the problem.... a few ignition wires were on the exhaust (when i put the engine back in i didnt mount the wires properly!!) and they melted through so, i think it was earthing out. ill know this arvo, i will let you know. thanks for all the help!
jaquesy. |
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banshee_jaquesy
4fiddy Racer
Joined: 25 Mar 2009
Posts: 208
Location: cardiff south, newcastle
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| Posted: Sun Aug 30, 2009 8:02 am Post subject: |
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| ok, it wasnt the wiring, its the coil!!! after a good diagnostic run on stocko, i fond it was the coil. thanks for all the help guys!! |
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MadDog_Banshee
Blaster class
Joined: 23 Nov 2008
Posts: 124
Location: Central NSW
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| Posted: Wed Oct 07, 2009 12:13 pm Post subject: |
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hey what ended up happening to your bike? was that piston slap gone bad ?
i was riding my bike around on thje weekend and I'm getting the same thing happening to mine, although my bike is stock.
looking to prevent meltdown !
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"Back up Bug!" |
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123boath
90cc 2 stroke / 110 4 stroke
Joined: 14 Sep 2009
Posts: 80
Location: Adelaide,SA
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| Posted: Fri Oct 09, 2009 11:52 pm Post subject: |
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| mine banshee ran like absolute "profanity removed" when i had a split carbi boot from the carbi - engine side, check that. |
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banshee_jaquesy
4fiddy Racer
Joined: 25 Mar 2009
Posts: 208
Location: cardiff south, newcastle
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| Posted: Sat Oct 10, 2009 9:49 am Post subject: |
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mine had a split boot wen it was missfiring, but it turned out to be the coil!! got a new one and its purring like monster!!
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2000 YAMAHA BANSHEE. |
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