When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Dyna Glide ModelsSuper Glide, Super Glide Sport, Super Glide Custom, Dyna Glide Convertible, Super Glide T-Sport, Dyna Glide Police, Dyna Switchback, Low Rider, Street Bob, Fat Bob and Wide Glide.
My 04 dyna was running great until this afternoon. Gassed up with 87 non ethanol and ran good for 15 miles then ran sluggish and sounded like it was in and off one cylinder. Pulled plugs and rear one was fouled and smelled like gas. Pic below.
any idea where to go from here and what it could be? Thanks in advance. Front looks good rear looks bad
Pull both plugs outta the head, attach cables to plugs and ground the plug ends to the engine. Observe spark. Switch the position of the cables, if one does not spark. Might just need a new coil and spark plug cables.
*********just swapped coil and plug wires and still gas foul on rear plug. *************
what is next step?
Just tried 3 sets of plug wires. Not getting consistent spark front or rear. But only rear getting gas fouled.??? Anyway to test coil and make sure that's the culprit?
Last edited by SmittyFXDL; Nov 22, 2018 at 06:47 PM.
Reason: Updated info coil swap
Coil would have been my first guess.
What riding conditions are you doing? Many years ago I had a sporty and it would do that on slow riding conditions, like heavy stop and go traffic I used to carry several plugs with me when I used to go to Myrtle Beach for a night rideand a ride too.
Was only option available. Since it was non ethanol i didn't think it would be that bad. If it was a gas issue wouldn't that affect both plugs/ cylinders?
Originally Posted by fxdlx
Why would you run 87,(unless that's all that was available) what does the owners manual say to use.
Swapped coil and plug wires and still rear plug fouling. Tried spraying wd40 around the intake manifold and didn't notice any change in engine idle. Running out of options. Anything else it could be?
Swapped coil and plug wires and still rear plug fouling. Tried spraying wd40 around the intake manifold and didn't notice any change in engine idle. Running out of options. Anything else it could be?
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.
Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.
What would cause rear cylinder foul out
and a ride too.
