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 Post subject: wr running problem
PostPosted: Wed May 15, 2013 7:33 pm 
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80 cc

Joined: Sat Nov 28, 2009 5:32 pm
Posts: 24
Hi I have a wr 426 and seem 2 b having problems it seems 2 b spitting and loosening power wen I give it a fist full had a prob with carb replaced it tank bin epmty cleaned fresh fuel replaced coil new plug valve clearence cheaked starts fine first kick think it fuel related but cant find the problem can any 1 plz help?


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 Post subject: Re: wr running problem
PostPosted: Wed May 15, 2013 7:41 pm 
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125cc
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Joined: Thu Apr 16, 2009 4:45 pm
Posts: 146
Location: South Yorkshire / Derbyshire
Have you checked the jets are not blocked.

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 Post subject: Re: wr running problem
PostPosted: Wed May 15, 2013 7:52 pm 
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80 cc

Joined: Sat Nov 28, 2009 5:32 pm
Posts: 24
Yes carb bin cleaned and checked its got right jets in


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 Post subject: Re: wr running problem
PostPosted: Wed May 15, 2013 10:18 pm 
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300 cc

Joined: Mon Apr 06, 2009 4:01 pm
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Air leak somewhere?


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 Post subject: Re: wr running problem
PostPosted: Wed May 15, 2013 11:03 pm 
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80 cc

Joined: Thu Jan 31, 2013 12:53 am
Posts: 76
Location: Tow law Durham
Check for air leak on rubber from carb to barrel

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 Post subject: Re: wr running problem
PostPosted: Thu May 16, 2013 8:48 am 
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125cc

Joined: Sun Jan 13, 2013 1:04 pm
Posts: 121
Engine timing would cause this problem on hard acceleration have you check engine timing also as last person said check for air leeks,look at plug to see if it is light grey a sign of running lean or black a sign of over fueling.


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 Post subject: Re: wr running problem
PostPosted: Thu May 30, 2013 11:16 pm 
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80 cc

Joined: Mon May 27, 2013 7:29 pm
Posts: 19
Location: bradford
A cracked ring if not 1 tooth out on timing .


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 Post subject: Re: wr running problem
PostPosted: Fri May 31, 2013 4:06 pm 
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650 cc Monster
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I had this same problem turns out there was a minute pinhole in the fuel line worth a check
Dan

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 Post subject: Re: wr running problem
PostPosted: Fri May 31, 2013 4:57 pm 
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125cc

Joined: Sun Jan 13, 2013 1:04 pm
Posts: 121
have you solved it yet and what was it ???


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