Q Why is my 883 foul­ing a plug?

Motorcycle News (UK) - - MCN Garage -

My 2004 Sport­ster Cus­tom 883 is fit­ted with Scream­ing Ea­gle 2 pipes. She starts fine, but fouls the front plug very quickly. What’s the cure? Will Pol­lard, email

An­swered by Andy Forbes-Buck­ing­ham, AFB Mo­tor­cy­cles If it is smok­ing from the front cylin­der then there could be a valve stem seal is­sue. If it is still burn­ing cleanly it could well be a de­fec­tive coil. The Dual Fire sys­tem fea­tures a dou­ble out­let on the coil and if you re­verse the plug leads you could see if the plug-foul­ing switches to the rear cylin­der.

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