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No spark although we've renewed everything - ideas please
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MartinFarrell
Kingston Surrey
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March 27, 2019 - 11:16 pm
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I have a 1968 D14 which conked out last summer. Since then we have put in new plug, coil and cable, condenser and points and have visually checked all cables.  Still no spark.  What could I do next?  Help! 

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SpacedMarine
Up north
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March 27, 2019 - 11:19 pm
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MartinFarrell said
I have a 1968 D14 which conked out last summer. Since then we have put in new plug, coil and cable, condenser and points and have visually checked all cables.  Still no spark.  What could I do next?  Help!   

Ignition switch???

What's 7/16 in mm again?

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Mannanan
Leigh On Sea, Essex. Uk.
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March 27, 2019 - 11:48 pm
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I agree, I would always start looking at the contacts on the ignition switch as my second step. My first step is battery condition which you have not mentioned. I will assume you have already checked the condition of the battery.

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richard hyatt
Shaftesbury, Dorset.
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March 28, 2019 - 6:10 am
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Hi there,

Can you put a direct feed from the battery straight to the coil , thereby bypassing the switch side of the circuit?

That will rule out that half of the circuit.

Check the quality of the earth side of battery to frame as well.

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stubaker58
Sunny Felixstowe
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March 28, 2019 - 8:25 am
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Hi,

did you check the wire under the engine? very vulnerable to breaks.

D7/14 hybrid (4 speed with D7 crank etc.) on the road, D10 Bushman awaiting rebuilding.

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sunny
Norfolk
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March 28, 2019 - 8:33 am
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put   W D 40  or   somthing   on     manky    green  conecters  , also   check   each  weir   in tern   as  ther  may  be  a  broken   or  manky   weir   insde  the  plastic covering    ,,

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nickjaxe
Runcorn Cheshire UK
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March 28, 2019 - 4:29 pm
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Try as Richard say...wire direct to coil from batt bypassing everything else...and as the wire from the coil to the points housing connection.

Make sure the earth is good between the engine and battery...temp earth wire from the engine case to the batt just to check.

Condensers are very poor  these days...if all above fail try another known good one.

My Bantam video              https://www.you.....jpOFmzRZRI

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johnsullivan
east sussex
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March 29, 2019 - 4:11 pm
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splutter to a stop or dead stop? The switch  is number one suspect .

?

67 D10. and a D7    2007 Honda Hornet FA. 93 Yamaha TTR 250 Raid, Sinnis SC 125. 78 Honda 90  75 Montesa Cota 247 an electric scooter of Famous make.

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Megga
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April 1, 2019 - 7:06 am
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Sorry if this is teaching you to suck eggs, but its best to get back to basics. If you have a multi meter use that, if not, knock up a bulb with a bit of wire .

Go through the wiring from start to finish. here's a simple video that might help, depending on your knowledge.

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Peterg
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April 1, 2019 - 10:43 am
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Follow the power. As Mega said use a meter or the pilot light unit. It goes from battery negative terminal to switch to coil (both sides) and down to the points. The switch is too complicated and difficult to access, so go straight to the coil supply side. I have also been known to adjust the points so they do not close and assemble without the insulating washer.

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MartinFarrell
Kingston Surrey
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April 3, 2019 - 9:51 pm
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Thanks folks for all these helpful comments.  So I have lots to work on thank you for making the time to give me some good ideas. (The switch was new last year so I guess is OK but will check it). Much appreciated.    

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