Misfire under load. 85 FLHTC
Seasoned HDF Member
Joined: Sep 2010
Posts: 10,238
Likes: 799
From: Indiana
That must be why my VOES is grounded when she's idling. I couldn't believe the amount of vacuum sucking through those hoses..........
Road Master
Joined: Jan 2008
Posts: 1,187
Likes: 8
From: Montgomery, AL
1985 FLHTCU with intermittent sputters too, top end just rebuilt, butterfly carb rebuilt, new wires and spark plugs. Did notice that there is a 52 and 175 jet on this beauty, swapped ignition module and coils with presumed good used ones. Just a cough low and high range and no real power loss. No vacuum leaks. Cautiously riding but after having to lay down a few dead presidents I hope I don't hurt it by continuing to run it
.
.As recommended check all wires thoroughly going to ignition pickup. Also verify all grounds are nice and clean.
2nd Gear
Joined: Oct 2012
Posts: 6
Likes: 1
From: Warrington, PA
Hey, did you ever find out what was causing your miss under a load. I have the same bike and same problem. I changed the ign switch plugs wires coil battery and still having the same problem. Would love to find this one...can't ride it like this.
Outstanding HDF Member
Joined: Oct 2010
Posts: 2,706
Likes: 14
From: Near Frankenmuth, MI
Since my post here almost a year and a half I can tell you that when I put on a new S&S Shorty Super E this summer it took care of my issues of hesitation and ruff running under load, and gave my ride more performance than it ever had.
Junk the Keihin butterfly carb and you will be amazed at the performance too.
May not be the answer for everyone. Do the basic tests to make sure it's not something simple and inexpensive first! I had rebuilt my carb and even put in an Anderson accelerator pump kit, and I'm sorry I wasted so many hours, days, weeks, and years running that crappy old carb and trying to make it work!!!
Junk the Keihin butterfly carb and you will be amazed at the performance too.
May not be the answer for everyone. Do the basic tests to make sure it's not something simple and inexpensive first! I had rebuilt my carb and even put in an Anderson accelerator pump kit, and I'm sorry I wasted so many hours, days, weeks, and years running that crappy old carb and trying to make it work!!!
Cruiser
Joined: Aug 2013
Posts: 135
Likes: 0
From: Dallas
The description sounds just like a fuel issue. I am cleaning tank liner out of my left tank. I had bit of liner make it into the carb and it clogged the main jet. Bike idled fine and it could go unless I tried to accelerate with any power all I would get was spitting and sputtering.
Pull the carb, disassemble and clean with copious amounts of carb cleaner (I like B-12).
Pull the carb, disassemble and clean with copious amounts of carb cleaner (I like B-12).
Thread
Thread Starter
Forum
Replies
Last Post
