Dyna Glide Models Super Glide, Super Glide Sport, Super Glide Custom, Dyna Glide Convertible, Super Glide T-Sport, Dyna Glide Police, Dyna Switchback, Low Rider, Street Bob, Fat Bob and Wide Glide.
Sponsored by:
Sponsored by:

Spark plug assessment

Thread Tools
 
Search this Thread
 
Old Jul 24, 2022 | 12:54 PM
  #1  
Fxdeez_'s Avatar
Fxdeez_
Thread Starter
|
Intermediate
Joined: Dec 2020
Posts: 26
Likes: 5
From: California
Default Spark plug assessment

I have a 2000 FXD 88tc w/ mikuni 42 and thunder header it possibly has after market cams from the sound of it. I recently changed my plugs and after going on a 80 mile ride my plugs look black. Am I running rich ? What jets should I run ? Any suggestions or knowledge.


 
Reply
Old Jul 24, 2022 | 07:04 PM
  #2  
benscratchin's Avatar
benscratchin
Seasoned HDF Member
10 Year Member
Joined: Oct 2015
Posts: 8,466
Likes: 19,160
From: The Republic of Texas
Question Reading spark plugs:

Originally Posted by Fxdeez_
I have a 2000 FXD 88tc w/ mikuni 42 and thunder header it possibly has after market cams from the sound of it. I recently changed my plugs and after going on a 80 mile ride my plugs look black. Am I running rich ? What jets should I run ? Any suggestions or knowledge.
Go on YouTube. In the search box type in "read spark plugs like a pro". Kevin Baxter will break it down for you.

.
 
Reply
Old Jul 24, 2022 | 07:10 PM
  #3  
Roadghost's Avatar
Roadghost
Road Warrior
10 Year Member
Liked
Loved
Community Favorite
Joined: Jul 2014
Posts: 1,479
Likes: 638
From: Up North
Default

Slightly rich. Why don't you just tighten the screw a bit and lean it up?
 
Reply
Old Jul 24, 2022 | 07:46 PM
  #4  
chopper_man's Avatar
chopper_man
Stellar HDF Member
Veteran: Army
10 Year Member
Liked
Community Favorite
Joined: Apr 2016
Posts: 3,316
Likes: 2,111
From: Masshole
Default

Get rid of the shitty E-3 plugs and put regular Champions of NKG's in it.
 
Old Jul 24, 2022 | 07:48 PM
  #5  
QC's Avatar
QC
Seasoned HDF Member
10 Year Member
Liked
Loved
Top Answer: 1
Joined: Mar 2012
Posts: 100,455
Likes: 19,811
From: Centennial, CO
Default

Originally Posted by chopper_man
Get rid of the shitty E-3 plugs and put regular Champions of NKG's in it.
 
Reply
Old Jul 25, 2022 | 12:00 PM
  #6  
nevil's Avatar
nevil
Seasoned HDF Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Jul 2008
Posts: 9,281
Likes: 1,139
From: southeast PA
Default

First thing is to get stock plugs in there.
 
Reply
Old Jul 25, 2022 | 06:28 PM
  #7  
seniorsuperglideE8's Avatar
seniorsuperglideE8
Supporter
Veteran: Navy
15 Year Member
Liked
Community Favorite
Joined: Jan 2007
Posts: 15,788
Likes: 5,622
From: along the shore of Mishigami
Supporter
Default

+1 with nevil, gap at 039-.040".
 
Reply
Old Jul 25, 2022 | 07:57 PM
  #8  
Fxdeez_'s Avatar
Fxdeez_
Thread Starter
|
Intermediate
Joined: Dec 2020
Posts: 26
Likes: 5
From: California
Default

Originally Posted by benscratchin
Go on YouTube. In the search box type in "read spark plugs like a pro". Kevin Baxter will break it down for you.

.
I will check that out thanks
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Times Harley-Davidson Chucked Tradition Out the Window

 Verdad Gallardo
story-1

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-2

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-4

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-5

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-6

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-7

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-8

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-9

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
Old Jul 25, 2022 | 07:59 PM
  #9  
Fxdeez_'s Avatar
Fxdeez_
Thread Starter
|
Intermediate
Joined: Dec 2020
Posts: 26
Likes: 5
From: California
Default

Originally Posted by Roadghost
Slightly rich. Why don't you just tighten the screw a bit and lean it up?
air fuel mixture screw?
 
Reply
Old Jul 25, 2022 | 08:01 PM
  #10  
Fxdeez_'s Avatar
Fxdeez_
Thread Starter
|
Intermediate
Joined: Dec 2020
Posts: 26
Likes: 5
From: California
Default

Originally Posted by chopper_man
Get rid of the shitty E-3 plugs and put regular Champions of NKG's in it.
I knew this was coming lol my local auto parts store was out and this is what they had .
 
Reply



All times are GMT -5. The time now is 05:54 AM.

story-0
7 Times Harley-Davidson Chucked Tradition Out the Window

Slideshow: Harley-Davidson built its reputation on nostalgia, but every so often, the company took a hard left turn into the future.

By Verdad Gallardo | 2026-05-20 11:18:19


VIEW MORE
story-1
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-2
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-3
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-4
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-5
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-6
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-7
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-8
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-9
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE