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Starting problems s1 8
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MattF



Joined: 29 Mar 2013
Posts: 86
Location: Christchurch, NewZealand

PostPosted: Fri Jun 30, 2017 6:28 am    Post subject: Starting problems s1 8 Reply with quote

About two and a half years ago my s1 8 was running, since then she's been garaged. Back then she was a two spin hand start from cold and now in trying to get her running again she will sometimes fire up roughly for a few seconds-1min and then die. All the plugs spark but I'm not sure they spark that well (don't know much about plugs) I have petrol flowing ok and no blocks in the air supply. Any ideas what I should do? My only thought was try tow it around the block a few times to get the oil moving? Other than that I'm at a loss to know what the problem could be Crying or Very sad
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Miken



Joined: 24 Dec 2012
Posts: 544

PostPosted: Fri Jun 30, 2017 12:24 pm    Post subject: Reply with quote

Is the fuel in the tank 2 1/2 years old?
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MattF



Joined: 29 Mar 2013
Posts: 86
Location: Christchurch, NewZealand

PostPosted: Fri Jun 30, 2017 12:49 pm    Post subject: Reply with quote

Haha sorry should have said I have drained the tank, cleaned out the float chamber and refuelled before trying to start her
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Rick
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Joined: 27 Apr 2005
Posts: 22429
Location: UK

PostPosted: Fri Jun 30, 2017 1:48 pm    Post subject: Reply with quote

Points correctly gapped and clean?

Fuel getting to the engine (not just the pump), ie carb jets clear?

No air leaks around the inlet manifold etc?

Any blocked fuel filters?

RJ
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alastairq



Joined: 14 Oct 2016
Posts: 1950
Location: East Yorkshire

PostPosted: Fri Jun 30, 2017 2:56 pm    Post subject: Reply with quote

Possibly the fuel already in the carb bowl is getting used up, and not being replaced?

Perhaps the needle valve on the carb is sticking? {Gummed up?]
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MattF



Joined: 29 Mar 2013
Posts: 86
Location: Christchurch, NewZealand

PostPosted: Fri Jun 30, 2017 9:55 pm    Post subject: Reply with quote

Thanks guys i know the needle is going up and down ok but will check petrol supply into the float chamber/carb.
In thinking about it there's got to be enough spark because at least half the cylinders are backfiring at me so I may have a timing problem also Sad
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MattF



Joined: 29 Mar 2013
Posts: 86
Location: Christchurch, NewZealand

PostPosted: Fri Jun 30, 2017 11:08 pm    Post subject: Reply with quote

May have found the problem, just don't know what to do about it.
If I'm correct when you flood the float chamber and lift the piston inside the carb petrol should jet out the air-intake....not just flood the float chamber so much that it pisses out the nut at the top!!???? What part do I need to take apart and clean?
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MattF



Joined: 29 Mar 2013
Posts: 86
Location: Christchurch, NewZealand

PostPosted: Sat Jul 01, 2017 9:20 pm    Post subject: Reply with quote

Yay now she's going, after cleaning out the carb I still had to do the pull start option.
Now to see what's wrong with the side and tail lights - fingers crossed its just the fuse
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welder



Joined: 26 Nov 2007
Posts: 265
Location: North Warwickshire

PostPosted: Sun Jul 09, 2017 10:32 pm    Post subject: Reply with quote

MattF wrote:
Yay now she's going, after cleaning out the carb I still had to do the pull start option.
Now to see what's wrong with the side and tail lights - fingers crossed its just the fuse


Matt, if fuse replacement isn't the cure take a look inside the circular connection box on the bulkhead, just beside the battery tray. I once had problems similar to yours and checking/tightening of all the brass screws sorted things out.

Ian
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