Ignition help
Thread Starter
|
Advanced
Joined: Apr 2006
Posts: 81
Likes: 1
From: Queens, NYC
Ignition help
I need some help. Have a 96 S&S motor that keep blowing ignitions and I dont know why. I blew a crane single fire and replaced it with the Dyna S set up. It has probably 100 miles on it and now its not giving me spark.
I thought my Tach in line resistors went bad because the Revs started looking all weird and jumpy when I took it over 4k rpms so I replaced it with a new one, I went to start the bike and I get no spark. Any ideas? I am going to try and trouble shoot it some more, but its getting 12+ but not sparking.
I thought my Tach in line resistors went bad because the Revs started looking all weird and jumpy when I took it over 4k rpms so I replaced it with a new one, I went to start the bike and I get no spark. Any ideas? I am going to try and trouble shoot it some more, but its getting 12+ but not sparking.
6th Gear
Joined: Mar 2013
Posts: 10
Likes: 0
From: Lancaster, ca
I'm having the same issues , fried my screaming eagle race ignition module I replaced it with a stock set-up but still get no spark ,I was told by a member on here & a tech a HD that it could be the ignition sensor under the timing cover..
I hope that info helps you
I'm not going to be able to fix it till after vacation, if you happen to get yours running please let me know what you did To get it running.
Thanks
I hope that info helps you
I'm not going to be able to fix it till after vacation, if you happen to get yours running please let me know what you did To get it running.
Thanks
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,897
From: Bedford UK
It's not the engine that's blowing them! You have a fundamental electrical problem. Go through the instructions for fitting your ignition system with a magnifying glass! Make sure every last detail is complete, especially ground returns.
Thread Starter
|
Advanced
Joined: Apr 2006
Posts: 81
Likes: 1
From: Queens, NYC
I was thinking ground as well, I will pull out my fine tooth comb and review all my connections. I really hope I can figure it out, I am about to blow the effin thing up. Thanks guys.
Seasoned HDF Member
Joined: Aug 2007
Posts: 8,195
Likes: 3,085
From: NW AR
Also check your charging system. Put a volt meter across the battery when it's running and check the voltage. Should be about 14.7. If more, that could be your problem and the regulator is shot. Next, put the meter on AC Volts and check again. If you get a reading >0, your regulator is shot.
Tourer
Joined: Aug 2006
Posts: 282
Likes: 7
From: Southern MD
Electronic ignitions need resistor or spiral suppression type plug wires as well as the proper coil. Did you use a matched set?
Also is your exhaust real close to the pick-up? Try header wrap or a heat shield if it gets too hot in that area.
Also is your exhaust real close to the pick-up? Try header wrap or a heat shield if it gets too hot in that area.
Trending Topics
Road Captain
Joined: Nov 2007
Posts: 517
Likes: 6
From: Ottawa, ON
Most of the aftermarket modules have a diagnostic LED that is used for static timing as well.
When you switch the ignition ON, the led should come up for a second or so, indicating that all the circuits are alright. If there is an open circuit somewhere (the sensor or the coil), the LED will not come up
When you switch the ignition ON, the led should come up for a second or so, indicating that all the circuits are alright. If there is an open circuit somewhere (the sensor or the coil), the LED will not come up
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider
Verdad Gallardo
Thread Starter
|
Advanced
Joined: Apr 2006
Posts: 81
Likes: 1
From: Queens, NYC
So I took out the whole thing, tested it and was not getting any power from the ignition module when I was cranking it. I am sending it back to the manufacturer so they can test it and perhaps warranty it.
Question: Could it be that I need a rev limiter to prevent the next one from burning out? I run the bike really hard, has a balanced and honed crank along with some high compression pistons I like to wind out. Previous to the DynaS I had a Crane Hi4 that I burnt out as well, I didnt go with a new Crane because the way the coil mounted it kept cracking and dropping off so I went with the DynaS. Could it be the revs are going to high?
Question: Could it be that I need a rev limiter to prevent the next one from burning out? I run the bike really hard, has a balanced and honed crank along with some high compression pistons I like to wind out. Previous to the DynaS I had a Crane Hi4 that I burnt out as well, I didnt go with a new Crane because the way the coil mounted it kept cracking and dropping off so I went with the DynaS. Could it be the revs are going to high?
