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Latest discussions at Pit Bike Club:
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13-04-2011, 12:38 PM
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#1
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Compulsive Poster
Join Date: Oct 2007
Location: Gloucestershire
Age: 38
Posts: 19,047
Bike: klx's, 50
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mini bikes 101
right, proper newbie question time but i'm stuck...
timing is spot on
valves are spot on
carb is clear and working
spark plug is good with a good spark, fuel is getting to the plug....
so why wont the fecker start? 
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13-04-2011, 12:48 PM
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#2
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Super King
Join Date: Jun 2010
Location: Wolverhampton
Age: 29
Posts: 1,053
Bike: WPB 125
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Re: mini bikes 101
tried puttin petrol straight into the head?
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13-04-2011, 12:49 PM
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#3
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PBC Legend
Join Date: Mar 2009
Location: Bedford.
Age: 29
Posts: 9,674
Bike: D-LINK 160
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Re: mini bikes 101
air/fuel mixture,
dead fuel,
plug breaking down under load.
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13-04-2011, 12:51 PM
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#4
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PBC Legend
Join Date: May 2006
Posts: 6,481
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Re: mini bikes 101
have you got good compression?
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13-04-2011, 12:52 PM
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#5
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Compulsive Poster
Join Date: Oct 2007
Location: Gloucestershire
Age: 38
Posts: 19,047
Bike: klx's, 50
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Re: mini bikes 101
Quote:
Originally Posted by Roundy
tried puttin petrol straight into the head?
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fuel is getting to the head
Quote:
Originally Posted by HarrisoN*
air/fuel mixture,
dead fuel,
plug breaking down under load.
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carb is good, plug is good, new fuel...
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13-04-2011, 12:55 PM
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#6
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PBC Legend
Join Date: Mar 2009
Location: Bedford.
Age: 29
Posts: 9,674
Bike: D-LINK 160
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Re: mini bikes 101
tried putting you hand over the carb mouth?
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13-04-2011, 12:55 PM
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#7
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Wheelie King
Join Date: Dec 2007
Location: worcestershire
Age: 51
Posts: 2,280
Bike: various
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Re: mini bikes 101
Are the carb settings known to be ok for that engine?
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13-04-2011, 12:56 PM
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#8
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PBC Legend
Join Date: Sep 2008
Location: Kent
Age: 36
Posts: 5,030
Bike: Honda Chaly
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Re: mini bikes 101
Not sure if you can do it on a pit bike. But I've seen it in the past, the timing being 180deg out.
I had a similar problem with the TZR engine yonks ago.
Turned out to be a faulty stator.
Ben
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13-04-2011, 01:05 PM
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#9
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Compulsive Poster
Join Date: Oct 2007
Location: Gloucestershire
Age: 38
Posts: 19,047
Bike: klx's, 50
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Re: mini bikes 101
got her running on the choke but slowly dies when you turn it off.
no carb screw is back to 2 turns out from closed
idle seems ok
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13-04-2011, 01:09 PM
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#10
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PBC Legend
Join Date: May 2006
Posts: 6,481
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Re: mini bikes 101
Quote:
Originally Posted by teapot
got her running on the choke but slowly dies when you turn it off.
no carb screw is back to 2 turns out from closed
idle seems ok
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well the choke restricts air flow to richen up the mixture. That suggest to me a partially blocked pilot jet, idle set stupidly low or mixture incorrect?
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