White stuff on exhaust port
Thread Starter
|
5th Gear
Joined: Nov 2010
Posts: 9
Likes: 0
From: San Jose, CA
White stuff on exhaust port
Bought myself a 2005 Heritage with 15000 miles. After reading a lots of posts regarding cam tensioners, I decided to take a look at them. Upon removing the cam cover, I noticed both front and rear tensioners have about 1mm (.025") of wear. I guess I'll be ok for a while.
So the question here is that since I needed to remove exhaust pipes to open the cam cover, I notice white deposite on the exhaust port. See photos. What are they? Is it normal? I searched forums but found nothing.
Front cylinder
Rear cylinder
So the question here is that since I needed to remove exhaust pipes to open the cam cover, I notice white deposite on the exhaust port. See photos. What are they? Is it normal? I searched forums but found nothing.
Front cylinder
Rear cylinder
Intermediate
Joined: Oct 2010
Posts: 30
Likes: 0
From: Medicine Lodge, Ks.
Taking a swag here, but that looks like its been running really hot and lean. Possibility of low-grade gas too.
But I'm an EVO guy, maybe TCs just run that much hotter? Does the bike have aftermarket pipes?
But I'm an EVO guy, maybe TCs just run that much hotter? Does the bike have aftermarket pipes?
Bought myself a 2005 Heritage with 15000 miles. After reading a lots of posts regarding cam tensioners, I decided to take a look at them. Upon removing the cam cover, I noticed both front and rear tensioners have about 1mm (.025") of wear. I guess I'll be ok for a while.
So the question here is that since I needed to remove exhaust pipes to open the cam cover, I notice white deposite on the exhaust port. See photos. What are they? Is it normal? I searched forums but found nothing.
So the question here is that since I needed to remove exhaust pipes to open the cam cover, I notice white deposite on the exhaust port. See photos. What are they? Is it normal? I searched forums but found nothing.
I guess the best thing to do is to start at the basics. Fuel delivery, Air intake and exhaust.
You might want to post this in the TECH SECTION. Lots of good stuff there.
Best of luck.
Thread Starter
|
5th Gear
Joined: Nov 2010
Posts: 9
Likes: 0
From: San Jose, CA
Yes both spark plugs are of the same color: white and not glassy brown. Based on the paper work, the bike has SE stage 1 air cleaner and re-mapping. Pipe is replaced with Cycle Shack MHD-137T slip-ons.
Bike is running good so far (2 months). Maybe I will put back the stock exhaust and see what happens.
Bike is running good so far (2 months). Maybe I will put back the stock exhaust and see what happens.
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,525
Likes: 6,406
From: Honah Lee
Mine at 30K or so looked like yours except it was black. I do a lot of mixed 50/50 round town/55-60 driving. If had just got of a 100 mile run at 60 bet they would look the same. Do not think its has anything to do with quality of gas. My plugs are sort of like that. Do know that unleaded gas builds up and only gets so thick because of flake off. Looks normal to me and it will stay about that thick till valve seals get old and worn and then it will look thicker and blacker due to oil build up.
Last edited by Jackie Paper; Sep 14, 2018 at 10:27 AM.
Trending Topics
Club Member
Joined: May 2007
Posts: 145,895
Likes: 821
From: 40 miles Northeast of Indy..
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
Cruiser
Joined: Dec 2010
Posts: 110
Likes: 1
From: central NC
When I run Sonoco CAM2 purple racefuel in my GSXR it will turn the whole exhaust a white powdery color on the inside. Just like yours. Here is my theory. With regular nasty gas, A slight rich burn will give you the black powder build up of all the burnt impurities in the gas. A leaner burn is actually even burning up more of the impurities so you do not see as much carbon builup. In CAM2 or other more refined fuels you do not have the same impurities and you are left with a white greyish residue.
If you havent had any other type of fuel then I don't know what else would cause this.
I have ran them extremely lean and they dont look like that. The plug tip will have small white dots on them from were the piston is actually vaporizing and extremely small pieces of the piston are sticking onto the plug.
If you havent had any other type of fuel then I don't know what else would cause this.
I have ran them extremely lean and they dont look like that. The plug tip will have small white dots on them from were the piston is actually vaporizing and extremely small pieces of the piston are sticking onto the plug.
Last edited by topfuel7; Jan 29, 2011 at 11:34 AM.
Thread
Thread Starter
Forum
Replies
Last Post
