87 FLHTC - Starting Issues
Today, now it sounds as though the starter is spinning freely and not engaging at all...
Gonna pull the solenoid and see if there is an issue there. Wish me luck
So... here is my issue:
I have a 1987 FLHTC with a 1340 Evo. A few mods here and there, a rebuild or two, but over all it is a stock power plant. I have had this bike since 1989, and have coverd well over a quarter million miles with it.
Last fall, the bike started having issues with the starter. When the botton is pushed, it would act as though the battery was low and the starter would buzz and then turn over slowly. This happened every time. On the last ride, I even got a nice puff of electrical smoke from the starter area... though I am not positive of the exact source. Being that I have a few other sleds, I put her away for the winter after that.
Fast forward a season and yesterday I decided to tackle the problem. I read about people experiencing the "Click Issue" written about here: https://www.hdforums.com/forum/evo-c...-question.html and even though the symptoms are different (I do not get a click.. I get a buzz and a slow crank) I figured what the hell... a starter relay is cheap.
I shoudl have attempted to start the bike before trying to make any repairs, but I did not. I slapped in a new starter relay. I hit the fire button and she cranked like new and fired right up. I thought to myself that I had fixed it for cheap, but to be sure, I wanted to see what happened when I put the old relay back on the system.
Unfortunately... even with the old relay reinstalled she continued to work like she should and cranked just fine. I was hoping that maybe I had a loose or corroded connection and just playing with the relay fixed the problem, but I am never that lucky.
Last night I went for a nice long ride, and the buzzing and slow cranking came back. But this time, it was intermitant. I stopped several times over the ride and only half of the time did she buzz and then crank slow. And I have not seen smoke since last fall. The rest of the time, she turned over fairly quickly and fired right up. WTF!!!
The battery is new and has been load tested. The starter solenoid was replaced last year in an attempt to repair this issue. The cables are all clean and bright and the grounds are solid. Could the starter be giving up the ghost? Is the starter serviceable?
The only thing left is the starter motor which in my opinion has served you well and is probably worn beyond rebuilding. I would remove it and tear it down to check if whats left can be resurected after the smoking you noticed.
I would assume the brushes and armature are toast and a new starter is required.
Cleaned battery, ground, starter and solenoid connections. No love there either...
Replaced solenoid with known good spare, and got a little crank... So I attempted jump from car battery and it cranked a little faster, but stopped cranking after about 4 spins like battery was flat even though still hooked to running car.
Pulled battery that shows 13.3 volts and will have it load tested today.
Thinking I got a combo issue... Solenoid sorted part of it.
The only thing left is the starter motor which in my opinion has served you well and is probably worn beyond rebuilding. I would remove it and tear it down to check if whats left can be resurected after the smoking you noticed.
I would assume the brushes and armature are toast and a new starter is required.
The Best of Harley-Davidson for Lifelong Riders
Over that time I have replaced all kinds of things from the starter with an All ***** unit, new solenoids, new wires, new relays, new battery and ground cables, you name it. I thought maybe I was not getting enough cranking amps, so I replaced battery with a few high CCA varieties over the years and landed on this Anti Gravity unit I have now. Issue still was persisting, but I was living with it. Intermittent RunOns and weak cranking just kept plaguing me. Over this time, I turned 500K+ on the original power plant and she was so tired, that I swapped out for an S&S V80. I also wired in a Ford Starter Relay in to the circuit to prevent RunOns when the bendix is stuck on the ring gear (can happen with low battery or other causes).
I have tried so many things and maybe just maybe I have finally found the culprit. I was back in there over the weekend and found that the Starter Clutch (aka bendix or starter gear) was cracked. I checked my service log and I can't find the last time I replaced it. I know it has been replaced a few times since 1987, and I was pretty sure I tried replacing it to resolve this issue before... but maybe I missed it? I can't remember.
I rode all weekend, and she fired up like a new bike every single time. Maybe... just maybe... I have it licked. Or maybe not... only time will tell.
Last edited by Summers420us; Feb 22, 2023 at 01:46 PM.









