Black smoke upon shutting EVO off? - Harley Davidson Forums



Carburetor Related Find discussions on carburetor related goodies here. Swap and trades? Rebuild information and tuning for the pre EFI systems.

Black smoke upon shutting EVO off?

Reply
 
 
 
P
 
Thread Tools Search this Thread
  #1  
Old 02-12-2018, 07:19 PM
hardcandydyna's Avatar
hardcandydyna hardcandydyna is online now
New Member
Thread Starter
Join Date: May 2013
Location: NJ
Posts: 67
Thanks: 0
Thanked 0 Times in 0 Posts
Default Black smoke upon shutting EVO off?

Took my 99 evo Springer for a ride earlier, let the bike warm up, and upon returning home I noticed when I shut the bike off in the garage some black smoke coming out of my python3 pipes, fired it righ back up and got 2-3 puffs of black smoke and it went away right away, fired it up about a hour later with zero black smoke nor zero issues, anyone ever have this? Or am I over worrying thanks

Last edited by hardcandydyna; 02-12-2018 at 07:21 PM. Reason: Misspelled words
Reply With Quote
  #2  
Old 02-13-2018, 08:25 AM
grbrown's Avatar
grbrown grbrown is online now
Club Member
Join Date: Jun 2007
Location: Bedford UK
Posts: 38,029
Thanked 1,040 Times in 964 Posts
Wink

Black smoke usually indicates that your bike is running rich. Any changes, such as to the exhaust etc, are likely to affect your carb/efi, so some adjustment may reduce the problem. If that doesn't work, find someone local who knows how to adjust the tune of your bike!
Reply With Quote
  #3  
Old 02-13-2018, 10:29 AM
bustert bustert is offline
Road Captain
Join Date: Aug 2008
Posts: 603
Thanked 65 Times in 64 Posts
Default

i think mr. gr is spot on!!!

for the sporadic nature as you described, my first suspect would be unstable fuel bowl level.
Reply With Quote
  #4  
Old 02-13-2018, 04:21 PM
hardcandydyna's Avatar
hardcandydyna hardcandydyna is online now
New Member
Thread Starter
Join Date: May 2013
Location: NJ
Posts: 67
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Bike hasn’t had any changes, carb was rebuilt this past dec, the previous owner didn’t ride the bike very often, I’m gonna have to get out there and run it, see how the plugs look aswell thank you
Reply With Quote
  #5  
Old 02-14-2018, 09:14 AM
bustert bustert is offline
Road Captain
Join Date: Aug 2008
Posts: 603
Thanked 65 Times in 64 Posts
Default

hummm, last dec and not ridden much??

although it may happen, you find the plugs showing excess fuel, never say never, because:

up at highway speeds, fuel demand might exceed fuel leakage rate so the plugs might show normal. however, when you run under leakage rate demand, the fuel will build in the bowl. also factor in that plugs will show diff color according to riding style as engines are not as efficient at low speeds. it could be a fluke or trash in the needle/seat, maybe a loose jet or any other number of things. one thing for sure is excess fuel will wash the oil off the cyl walls and that leads to accelerated wear. such a small thing to check the carb, but it is your machine.
Reply With Quote
  #6  
Old 02-15-2018, 04:55 AM
hardcandydyna's Avatar
hardcandydyna hardcandydyna is online now
New Member
Thread Starter
Join Date: May 2013
Location: NJ
Posts: 67
Thanks: 0
Thanked 0 Times in 0 Posts
Default

I pulled out the paper work from the org owner and it seems when they rebuilt the carb a 45 pilot jet was installed, bike has python pipes and a screamin eagle air cleaner, the bike sat from 2013-2017 and the work was performed when the org owner decided to get the bike up and running again, when parked it didn’t have any issues but I’m gonna remove the carb and go over it all again, they may have the wrong main jet
Reply With Quote
  #7  
Old 02-15-2018, 10:14 AM
bustert bustert is offline
Road Captain
Join Date: Aug 2008
Posts: 603
Thanked 65 Times in 64 Posts
Default

main is not your issue unless it is loose since it is not in the circuit. my sport came with a 42 pilot but i installed a 45 which is a common adjustment so i doubt this is an issue either.
Reply With Quote
 
 
 
P
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Is there such a thing as a "reverse trigger mechanism ?" ybnorml The Gun Enthusiast 5 07-21-2017 03:34 PM
06 883C not idling, and black smoke invaderb Sportster Models 12 07-01-2017 07:31 PM
Engine running rich pierrat63 General Harley Davidson Chat 6 06-08-2017 12:12 PM
CVO Stage III .. A few thoughts of my own Ultra61 Screamin Eagle CVO Models 6 02-28-2017 01:26 PM
Lifter noise brad75raiders Evo Classic Models 22 01-21-2017 04:39 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Featured Sponsors
Vendor Directory

All times are GMT -5. The time now is 09:12 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: