71 fx wont start

71fx · Oct 28th, 2009, 05:41 PM

been trying to get her started for a while. STRONG spark all the way to the plugs which are new. Pulled carb (old s and s super no accelerator pump) and cleaned it. Got fresh gas in tank. Acts like its mistimed backfires through carb. is it possible for it "jump timing". It was running great and suddenly nothing. Any help at this point would greatly appreciated.

Jack Klarich · Oct 28th, 2009, 08:34 PM

Pretty unlikely it jumped timing check the points and condensor and advance unit next unless u have electronic ignition

glider · Oct 28th, 2009, 08:36 PM

Give it a little spray of gas down the carb or a shot of starting either. Sometimes it's all it takes to get it running the first time.

Drumrguy · Oct 28th, 2009, 09:29 PM

Ok, so you have an S&S Super "B" carb, I would agree, check your points and condensor, if you set the gap to .018 that should get you started. Also are you running solid or hydraulic pushrods? Solids tend to need an adjustment every now and again, that could also cause some backfiring.

Oct 28th, 2009, 05:41 PM	#1
71fx New Family Ride: fx Join Date: Oct 28th, 2009 Posts: 1	71 fx wont start been trying to get her started for a while. STRONG spark all the way to the plugs which are new. Pulled carb (old s and s super no accelerator pump) and cleaned it. Got fresh gas in tank. Acts like its mistimed backfires through carb. is it possible for it "jump timing". It was running great and suddenly nothing. Any help at this point would greatly appreciated.

Oct 28th, 2009, 08:34 PM	#2
Jack Klarich Community Star Ride: 2007 Streetbob Join Date: Sep 25th, 2009 Location: Jax. Fl. Posts: 407 My Mood:	Re: 71 fx wont start Pretty unlikely it jumped timing check the points and condensor and advance unit next unless u have electronic ignition

Oct 28th, 2009, 08:36 PM	#3
glider Community Liaison Ride: 07 Road King Classic Join Date: Jun 21st, 2007 Posts: 20,467 My Mood:	Re: 71 fx wont start Give it a little spray of gas down the carb or a shot of starting either. Sometimes it's all it takes to get it running the first time. __________________ Psssst! Please stop by the "self help section" for maintenance tips, diagnostic codes and much more. click me!>>Self Help Information and Tips<< click me!

Oct 28th, 2009, 09:29 PM	#4
Drumrguy Play The Throttle Ride: 2005 Ultra Classic Join Date: Oct 17th, 2009 Location: Oakdale, Pa. Posts: 261 My Mood:	Re: 71 fx wont start Ok, so you have an S&S Super "B" carb, I would agree, check your points and condensor, if you set the gap to .018 that should get you started. Also are you running solid or hydraulic pushrods? Solids tend to need an adjustment every now and again, that could also cause some backfiring.

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71 fx wont start

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