Engine Mechanical Topics Discussion for motor builds, cams, head work, stripped bolts and other engine related issues. The good and the bad. If it goes round and around or up and down, post it here.

No spark

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Old Jul 23, 2012 | 12:42 PM
  #1  
1Pacificson's Avatar
1Pacificson
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Stage IV
Joined: Feb 2012
Posts: 4
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From: Oakland Ca
Unhappy No spark

Hey All,
Went for a great ride on Saturday, bike ran great (2001 Road King with full Screamin Eagle F.I. conversion) Tried to start it early Sunday morning but I only have combustion in the front cylinder. Fuel is being spit out of the pipe for the rear cylinder. I figured a bad plug so I pulled it and cleaned it, it really wasnt that bad. Put it back in and tried to start it and still have the same problem. It's been a while since I changed the plugs so I will pick up a set today but there is obviously something else wrong. Any ideas?
 
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Old Aug 2, 2012 | 12:00 PM
  #2  
WildBill2566's Avatar
WildBill2566
Road Master
Joined: Aug 2005
Posts: 1,090
Likes: 2
From: Manningtree, England
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Remove both plugs and leave them connected to the HT leads, since its the rear that is the issue, ground it out and turn her over. If you dont see a spark, you could change out the hT lead and try again.
If no spark again, then it may be the coil pack, check if there is a voltage on the low tension circuit feeding the coil. If so then its the coil that needs to be replaced. If no voltage on the low tension circuit, it may be a broken wire or bad connection.
My bet is its a dodgy HT lead or bad coil.
 
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