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Forog to mention that it pulls quite good through all gears. No hesitation, no sputter nothing. Just that cough when snapping...
I just began to have a problem with the bike stuttering in 5th gear above 80 mph as if starving for gas. Also, neutral light flickers in the 5th gear. But, I guess that's a different issue, not connected to the manifold and jets?
A richer mixture should run cooler, but that doesn't mean it's tuned correctly. What do your spark plugs look like? Personally, I'd change those manifold seals to eliminate a source of vacuum leak, then properly tune the carb. Most everyone uses a 45 pilot jet so I'd trust that.
Hello everyone. Just wanted to give you an update on the sputter and cough situation.
The mechanic changed the intake seals. The old ones were completely ruined - dried up, cracked and falling apart. Immediately the sputter/cough situation improved. It's almost gone. It did cough/backfire once or twice today. I'd like to completely eliminate it. Here is the current set up with the bike. Maybe something is not right in the setup?
1. I have the freeflow TC Bros filter installed. Mechanic said this could also be a problem, as the carb gets too much air. Maybe adding a K&N foam filter could help? Or just going to the regular OEM filter altogether?
2. We currently have a 48 slow jet installed (Chinese knockoff). For some reason the mechanic didn't go back to 45 even though I asked him.
3. On one of the startups I noticed black smoke coming out of the pipes for one second. Does this mean its very rich?
In my expirence coughing through carb coud be 2 things , lean or rich carb & or ignition timing to advanced,
good that you replaced the compliance fittings next I would put in a set of new plugs, be sure you get the right ones for electronic ignition & I would also replace the plug kabels if they are old. Also what do your plugs look like after the compliance fittings change ?
Here's what my compliance fittings looked like , my front cylinder was not firing right My new to me evo Wide Glide would not run on both cylenders, replaced compliance fitting & all is well . . .
Good luck keep us posted.
Last edited by troy montoya; Nov 23, 2024 at 04:54 AM.
Thanks.
I changed these gaskets/manifold seals. I assume it's not the same as compliance fittings?
I will check the current plugs.
I have Harley OEM 5R6A plugs installed. Will get the same or from Drag Specialties. Also planning to get new plug wires.
I haven't gotten to the ignition timing. I guess that would be down on my list as well. But, I don't have the tech knowledge for that, and there is almost no qualified technician to do that.
In my expirence coughing through carb coud be 2 things , lean or rich carb & or ignition timing to advanced,
good that you replaced the compliance fittings next I would put in a set of new plugs, be sure you get the right ones for electronic ignition & I would also replace the plug kabels if they are old. Also what do your plugs look like after the compliance fittings change ?
Here's what my compliance fittings looked like , my front cylinder was not firing right My new to me evo Wide Glide would not run on both cylenders, replaced compliance fitting & all is well . . .
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