02 fatboy cranks wont start
Thread Starter
|
Advanced
Joined: Sep 2017
Posts: 63
Likes: 4
From: North Dakota
02 fatboy cranks wont start
Bike sat for 2weeks while i was on hitch. Came home tried to start it. Cranks but wont fire.
Has fuel can smell it as i try to start bike. No spark when i pull plug and ground it on fins.
Replaced battery and plugs. Same thing. Connections all tight. Run switch on. Fuel pump is running the 3 seconds as normal.
Have the clymer service manual. But cant find out how to test coil or what to test to see where im losing spark at.
Have a new coil coming but wont be here til next week and have a charity ride this weekend.
Any ideas what to check or how to test coil to see if it is that?
Thanks
Has fuel can smell it as i try to start bike. No spark when i pull plug and ground it on fins.
Replaced battery and plugs. Same thing. Connections all tight. Run switch on. Fuel pump is running the 3 seconds as normal.
Have the clymer service manual. But cant find out how to test coil or what to test to see where im losing spark at.
Have a new coil coming but wont be here til next week and have a charity ride this weekend.
Any ideas what to check or how to test coil to see if it is that?
Thanks
Thread Starter
|
Advanced
Joined: Sep 2017
Posts: 63
Likes: 4
From: North Dakota
Another question. Was just looking up crank position sensor and noticed it fits both my fatboy and my 08 sportster.
Would the coil, plug wires and crank position sensor from my sporty work on fatboy?
Would the coil, plug wires and crank position sensor from my sporty work on fatboy?
Thread Starter
|
Advanced
Joined: Sep 2017
Posts: 63
Likes: 4
From: North Dakota
Just got the new igniton coil today. Installed it and still just cranks and doesnt fire.
So new plugs new coil new battery and fuel pump kicks on. Thumb switch is on.
So im at a loss here. Ordered new start/stop switch. Will be here Wednesday. Never replaced a switch before. Are they plug and play or will i have to splice/solder the wires? Any help is much appreciated.
The clymers manual isnt much help or i havent found the right section yet
Thanks
So new plugs new coil new battery and fuel pump kicks on. Thumb switch is on.
So im at a loss here. Ordered new start/stop switch. Will be here Wednesday. Never replaced a switch before. Are they plug and play or will i have to splice/solder the wires? Any help is much appreciated.
The clymers manual isnt much help or i havent found the right section yet
Thanks
Seasoned HDF Member
Joined: Sep 2008
Posts: 14,139
Likes: 11,206
From: San Diego, CA
I would get an HD 2003 Service manual and the electrical diagnostic manual. In the rear of your owners manual it will list the part numbers for the manuals... I believe you need P/N 99481-03A for the service manual... but double check that. If that part number is correct, you can get a new one for $103 from NewCastle HD online. There is a used one on eBay right now, bid's at $30.
There is a used 2003 Dyna Electrical manual #99496-03 for $59 on eBay right now
https://www.ebay.com/i/351973605076?chn=ps&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&itemid=351973605076&targetid=59646594310 8&device=c&mktype=pla&googleloc=9031297&poi=&campa ignid=6470636538&mkgroupid=81597521470&rlsatarget= aud-412677883135
la-596465943108&abcId=1140476&merchantid=101689657&gc lid=EAIaIQobChMI1pv2u7nF5AIVg_5kCh1A_gbrEAQYAiABEg Jjk_D_BwE
The reason I suggest the manuals, is because I have found it is much cheaper, and usually faster, to do some actual diagnostics rather than just throw parts at a problem. The HD manuals will help with that. I've looked at , but never bothered to buy a Clymers, or other off brand manual for any of my Harleys... they're, quite frankly, no where near as good as the wanna be manuals....
You're kind of all over with your parts replacement, so it's hard to try and guess what's been checked and/or missed... sorry I can't help with suggestions.
Good luck with the fix..
There is a used 2003 Dyna Electrical manual #99496-03 for $59 on eBay right now
https://www.ebay.com/i/351973605076?chn=ps&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&itemid=351973605076&targetid=59646594310 8&device=c&mktype=pla&googleloc=9031297&poi=&campa ignid=6470636538&mkgroupid=81597521470&rlsatarget= aud-412677883135
la-596465943108&abcId=1140476&merchantid=101689657&gc lid=EAIaIQobChMI1pv2u7nF5AIVg_5kCh1A_gbrEAQYAiABEg Jjk_D_BwEThe reason I suggest the manuals, is because I have found it is much cheaper, and usually faster, to do some actual diagnostics rather than just throw parts at a problem. The HD manuals will help with that. I've looked at , but never bothered to buy a Clymers, or other off brand manual for any of my Harleys... they're, quite frankly, no where near as good as the wanna be manuals....
You're kind of all over with your parts replacement, so it's hard to try and guess what's been checked and/or missed... sorry I can't help with suggestions.
Good luck with the fix..
Thread Starter
|
Advanced
Joined: Sep 2017
Posts: 63
Likes: 4
From: North Dakota
Sorry if im all over the place on parts. New battery was because it wouldnt fully charge pn trickle charger. I mentioned that as 1 issue with crank but wont fire is weak battery. New spark plugs due to not sure how old others were as ive only had bike 1 month. New coil as thats next in line for where spark come from.
I figured i would start at where spark ends. Spark plugs and work my way back to find issue.
I will look at the other manuals also. Hopefully they have lots pf pictures as i better comprehend with pictures lol
Thanks
I figured i would start at where spark ends. Spark plugs and work my way back to find issue.
I will look at the other manuals also. Hopefully they have lots pf pictures as i better comprehend with pictures lol
Thanks
Road Warrior
Joined: Jun 2013
Posts: 1,781
Likes: 50
From: Louisville, KY
Sorry if im all over the place on parts. New battery was because it wouldnt fully charge pn trickle charger. I mentioned that as 1 issue with crank but wont fire is weak battery. New spark plugs due to not sure how old others were as ive only had bike 1 month. New coil as thats next in line for where spark come from.
I figured i would start at where spark ends. Spark plugs and work my way back to find issue.
I will look at the other manuals also. Hopefully they have lots pf pictures as i better comprehend with pictures lol
Thanks
I figured i would start at where spark ends. Spark plugs and work my way back to find issue.
I will look at the other manuals also. Hopefully they have lots pf pictures as i better comprehend with pictures lol
Thanks
Trending Topics
Road Master
Joined: Jan 2006
Posts: 1,210
Likes: 12
From: Westchester, NY
Not sure if you have EFI or Carb but if EFI is there a Tuner attached to the ECM like a Dynojet?
If so, take it off and plug directly to the ECM without it.. Then try to start the bike...
Mike
NY
If so, take it off and plug directly to the ECM without it.. Then try to start the bike...
Mike
NY
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
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
Thread Starter
|
Advanced
Joined: Sep 2017
Posts: 63
Likes: 4
From: North Dakota
Thanks for reply Mike. Its efi and no tuner. Planning on taking the crank position sensor from my other bike and trying that today. After that im at a loss for what it could be from all my google searches