Low oil pressure/enginge problem? - Road Glide Forums
Engine Related Engine Builds and more for Road Glides

LinkBack Thread Tools Display Modes
post #1 of 10 (permalink) Old 06-21-2016, 08:23 AM Thread Starter
Join Date: Jul 2015
Location: Milwaukee
Posts: 4
Low oil pressure/enginge problem?

This is the first time that I have had to post something here. I usually read posts and get ideas but have never had a problem until now. So thank you in advanced for all of the members and info here that I have had the opportunity to read. I am not expecting any quick fix answers, maybe just some insight if someone else had a similar issue. I have to take it to my dealer for the work since I dont know what is happening. Now for the breakdown on the issue.

Recently my 2012 Road Glide Ultra has been running hot after about a half hour of riding. At low idle the motor starts to stall, the oil pressure drop almost to zero. Then I hear a different sound from the engine, lots of knocking when at cruising speed. The exhaust sound is different also, louder but different. I have only put on about 200 miles this year. I usually change the oil at the end of the season. So my first thought was a bad oil filter causing low pressure. I did an oil change and filter. The oil looked very dark almost burnt. There was a slight burnt smell. After the oil change I went for a ride. When I got home after riding I sat in the garage at idle in first gear. It started to drop idle speed and almost stop. I had to rev it to keep it running. Again low oil pressure. I am using syn Harley oil and filter.
Rockinjoe1 is offline  
Sponsored Links
post #2 of 10 (permalink) Old 06-21-2016, 09:18 AM
Life Member
Smarty's Avatar
Join Date: Apr 2015
Location: Royse City, Texas
Posts: 2,930
Little more info. How many miles on the engine? Do you feel like you are hearing a lifter breaking down or a more solid knock like a bad compensator sounds. (Not saying it is that, just the hard knock sound like that). When you changed the oil, did you cut open the filter and look for debris? How about the oil plug? How much metal on the magnet? All of these things are very important. It's like one begats the next. Like a bad lifter then it eats up the oil pump. Look forward to hearing your answers.

2016 RGS Black Quartz
Smarty is offline  
post #3 of 10 (permalink) Old 06-21-2016, 10:10 AM Thread Starter
Join Date: Jul 2015
Location: Milwaukee
Posts: 4
Thanks for the questions. I will be glad to supply all answers I can.
14700 miles on the bike.

The knocking was loud from the front of the bike and sounded almost like gas knock from bad gas or low octane. I always use 93 octane.

I did not cut open the filter. I still have it and can so i will do that. No metal shavings on the oil plug. I did check it carefully.

I do have an extended warranty that expires March 2017 so that is a positive for repair costs.

My wife and I have our first big trip. Wyoming and Montana by way of South Dakota the last week of July. So I hope to have it fully taken care of well before that.
Rockinjoe1 is offline  
post #4 of 10 (permalink) Old 06-22-2016, 03:11 PM
Join Date: May 2012
Posts: 13
Hey there,

It sounds like the same problem I would have with my 2012 RGU when it got hot. Lot's of traffic right around where I live and just 15 minutes sitting or crawling in traffic would drive the engine temp up. Once that happened I would start hearing the pinging sound you describe.

Mine would clear up once I was able to drive at a decent speed for maybe 20-30 minutes depending on the outside temperature. This issue is the main reason I started looking at the 2016 with the wet head and since purchased it.

The near stalling and pinging drove me nuts and I'm sorry to say I never found a way to resolve it. I was thinking of replacing the head pipe with a de-catted one which I'm sure would help but the 2016 looked too good
Eridon is offline  
post #5 of 10 (permalink) Old 06-22-2016, 03:18 PM
Join Date: May 2012
Posts: 13
As a side note which I forgot to mention. One thing that would help although not resolve the problem was to always use 93 octane gas. While many stations call 91 their premium it made the heat issue much worse.

I've read on here that a good rich tune will drop engine temp by ~ 20 degree's but I never did a stage 1 on the Bike so can't be sure.

Good luck!
Eridon is offline  
post #6 of 10 (permalink) Old 06-22-2016, 07:44 PM
Life Member
Hullhorr's Avatar
Join Date: Feb 2011
Location: Mt. Airy, MD
Posts: 6,081
Is your oil pressure low while cruising or just at idle when hot?

"A Goverment should fear it's people not vice versa"
Hullhorr is offline  
post #7 of 10 (permalink) Old 06-22-2016, 08:41 PM
Join Date: Mar 2011
Location: Oregon/Arizonia
Posts: 339
I run 60wt oil in my bike with a high performance oil pump my bike is at 10lbs on hot days idling i dont worry about it

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
SMOKENJOE is offline  
post #8 of 10 (permalink) Old 06-23-2016, 09:31 AM Thread Starter
Join Date: Jul 2015
Location: Milwaukee
Posts: 4
My oil pressure goes back to normal when the RPMs go up. Even though the pressure went back up with the RPMs I was still concerned that the oil was so dark after such a short time. I only rode the bike 3 times up to about 200 miles. The oil looked like end of season oil. Can oil turn that dark after such a short time?
I have it scheduled to be looked at in a week. An engine specialist is scheduled to look at it. Thank God for extended warranties.
Rockinjoe1 is offline  
post #9 of 10 (permalink) Old 06-23-2016, 10:04 AM
rideon's Avatar
Join Date: Jun 2010
Location: British Columbia
Posts: 500
It could be sumping. Excess oil in crankcase.

2018 Road Glide Special, vivid black
rideon is offline  
post #10 of 10 (permalink) Old 06-27-2016, 02:17 PM Thread Starter
Join Date: Jul 2015
Location: Milwaukee
Posts: 4
So as it turns out, newer bikes have an Engine Idle Temperature Management System. Something I did not know about. It will shut off one of the cylinders until the motor cools down. It can be programmed into the bike through the radio or the ignition switch, depends on models. Now that I have this info from my dealer I find it all over the web. Who knew. Thank you all for the input on this thread.
Rockinjoe1 is offline  

Quick Reply

Register Now

In order to be able to post messages on the Road Glide Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Similar Threads
Thread Thread Starter Forum Replies Last Post
Low Oil Pressure Indication woverby Engine Related 9 12-05-2017 06:12 PM
low oil pressure Boogitybob Engine Related 5 08-17-2014 11:05 PM
Extreme Low Oil Pressure Hannibal Engine Related 16 05-14-2014 09:23 PM
Low Oil Pressure And Noisy Tranny chkywuky Troubleshooting for Road Glides 4 09-18-2013 12:29 AM
High Oil Pressure and High Oil Temps ironmark Troubleshooting for Road Glides 17 12-09-2012 10:44 AM

Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome