Go Back   Harley Davidson Forums > Harley Davidson Motorcycles > Evo Classic Models
Sign in using an external account
Register Forgot Password?
Search


Evo Classic Models All Evo Models
Sponsored by: J&M Motorcycle Audio

Reply
 
 
 
P
 
Thread Tools Search this Thread
  #1  
Old 04-20-2012, 06:41 AM
EVOrider EVOrider is offline
Road Warrior
Join Date: Feb 2007
Location: Russellville, Arkansas
Posts: 1,701
Default knocking

My '98 Ultra has a tapping/knocking noise.....

I did the Stage 2 upgrade.....SE adjustable pushrods, EV27 cam, and the cam bearing. About a thousand miles later, it had a knocking noise at idle. It would knock for a minute or two and then go away. Knocking....pause......knocking.....pause.....

I thought it would be the lifters and I had a Indy listen as well....we both thought it was the lifters. So, I replaced the lifters with the Harley ones. The knocking seemed to go away...

The bike sat for about a week. I started the bike yesterday and it knocked immediately.

Riding down the interstate.....approx. 2500-3000 Rpm. It would knock for two minutes and then pause for two minutes much like a pattern.

The oil pressure light also seems to come on more than it use to. The idle is 1000 rpm, but if it drops just a hair below, the light comes on.

I'll try to get a dealer to listen as well over the weekend.....what do you all think?

I'm leaning towards a problem with oil pump....all still original.
__________________
1998 Electra Glide Ultra Classic EFI
1998 FXDL Low Rider
2010 Ultra Classic Limited-(Father's)
1981 Honda XL250S-(nearly mint condition)
Reply With Quote
  #2  
Old 04-20-2012, 07:20 AM
texashillcountry's Avatar
texashillcountry texashillcountry is offline
Dirt don't hurt
Join Date: Jan 2011
Location: Dripping Springs Texas
Posts: 7,754
Default

lack of oil pressure would be my first guess as well.
Reply With Quote
  #3  
Old 04-20-2012, 11:45 AM
Joboo1966's Avatar
Joboo1966 Joboo1966 is offline
Road Master
Join Date: Aug 2010
Location: Wabash
Posts: 770
Default

Oil pressure
__________________
You can't explain the feeling of what it is to ride...you either get it or you don't .
Reply With Quote
  #4  
Old 04-20-2012, 11:33 PM
SportsterBob's Avatar
SportsterBob SportsterBob is offline
Club Member
Join Date: Feb 2008
Location: Norfolk, VA
Posts: 18,597
Default

Did the knocking occur before the upgrade?
__________________
<a href=http://www.hdforums.com/forum/members/52970-sportsterbob-albums-246-pics-picture24299-bikes.jpg target=_blank>http://www.hdforums.com/forum/member...4299-bikes.jpg</a>
Reply With Quote
  #5  
Old 04-21-2012, 01:59 PM
SportsterBob's Avatar
SportsterBob SportsterBob is offline
Club Member
Join Date: Feb 2008
Location: Norfolk, VA
Posts: 18,597
Default

The link below gives some basic instructions on how to adjust the pushrods with hydraulic tappets. Check your adjustment before you spend a bunch of money!

http://www.revperf.com/Tech/Instruct...nstruct14.html
__________________
<a href=http://www.hdforums.com/forum/members/52970-sportsterbob-albums-246-pics-picture24299-bikes.jpg target=_blank>http://www.hdforums.com/forum/member...4299-bikes.jpg</a>
Reply With Quote
  #6  
Old 04-23-2012, 06:38 AM
EVOrider EVOrider is offline
Road Warrior
Join Date: Feb 2007
Location: Russellville, Arkansas
Posts: 1,701
Default

I was able to let a dealer listen to the bike......they said it sounds like carbon buildup to them. However, it was not making the noise before the upgrade!

I mentioned oil pump as the potential problem.....they said the EVO oil pump never goes bad. Uh....anything can fail or get weak!

I am planning on checking the pushrod adjustment sometime during the week. However, I adjusted them according to the HD instruction sheet.

There are two indy's in my area.....I'll try to get them to listen as well.
__________________
1998 Electra Glide Ultra Classic EFI
1998 FXDL Low Rider
2010 Ultra Classic Limited-(Father's)
1981 Honda XL250S-(nearly mint condition)
Reply With Quote
  #7  
Old 04-23-2012, 06:56 PM
EVOrider EVOrider is offline
Road Warrior
Join Date: Feb 2007
Location: Russellville, Arkansas
Posts: 1,701
Default

I figured it out.....

One of the oil lines partially collapsed. Oil line on order.....hopefully this will cure the problem.

The oil lines looked fine on the outside....but the inside. Definately not much oil could flow through there.
__________________
1998 Electra Glide Ultra Classic EFI
1998 FXDL Low Rider
2010 Ultra Classic Limited-(Father's)
1981 Honda XL250S-(nearly mint condition)
Reply With Quote
  #8  
Old 04-23-2012, 07:07 PM
1997bagger's Avatar
1997bagger 1997bagger is offline
Road Warrior
Join Date: Aug 2008
Location: Ohio
Posts: 1,890
Default

Good to hear you found something but if a problem still exists, a cam gear with just a fine line of too much play can cause a noise that is hard to pinpoint from the teeth chattering.
__________________


What is wrong with having the only Evo in the parking lot?

Lost track of stage engine, air cleaner says 80", alot of gears, exhaust with a big big hole, many disc clutch and alot of giddy up engineering
Reply With Quote
  #9  
Old 04-26-2012, 07:07 PM
stujoe stujoe is offline
New Member
Join Date: Oct 2011
Location: bc canada
Posts: 21
Default

i did the same kind of upgrade to a 89 ultra classic with a evo too as well.it has a s&s oil pump on it.put fueling lifters and blocks with adjustable push rods set at 2.75 turns into the lifters.and screaming eagle ignition box... it has that same kind of noise right around 2500-2800.dont want to start a oil pressure thing but at idle is 10 psi and at 2800 is 13 or so.... timing is at 35*.. when i put the cam in i measured the gear was bang on right out of the box..was thinking of backing the timing off a few degrees and see if that makes a difference..let us know if you beat it!! i would like to get rid of that pia noise as well ...
Reply With Quote
  #10  
Old 04-28-2012, 06:17 AM
EVOrider EVOrider is offline
Road Warrior
Join Date: Feb 2007
Location: Russellville, Arkansas
Posts: 1,701
Default

Quote:
Originally Posted by 1997bagger View Post
Good to hear you found something but if a problem still exists, a cam gear with just a fine line of too much play can cause a noise that is hard to pinpoint from the teeth chattering.
Well, the oil line was a problem....but not the problem causing the noise. I had one indy listen and ride it as well. He thinks it's in the cam gear as well with too much play.

He also noticed when the bike is knocking....the bike struggles to accelerate past 75mph. When the knocking stops.....then the bike has more power and accelerates easy. This is something I did not notice.
__________________
1998 Electra Glide Ultra Classic EFI
1998 FXDL Low Rider
2010 Ultra Classic Limited-(Father's)
1981 Honda XL250S-(nearly mint condition)
Reply With Quote
Old 04-28-2012, 06:17 AM
 
 
 
P
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Knocking noise in front Cylinder 05dynaman Dyna Glide Models 2 09-05-2013 10:11 PM
valve knock 83 fxsb ihjonny General Harley Davidson Chat 13 07-07-2013 12:12 AM
2006 Dyna fuel and oil issues geoffratrod Dyna Glide Models 0 09-03-2012 07:49 PM
Knock knock knocking in carb genshovel Engine Mechanical Topics 5 06-20-2011 02:27 PM
2011 Wide Glide Primary Case Knock Mitch903 Dyna Glide Models 6 03-26-2011 06:31 PM


Tags
carbon, harley, knock, knocking, low, oil, pressure, rid, soud


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

Join HDForums

Advertising
Featured Sponsors
Vendor Directory
Sponsors

All times are GMT -5. The time now is 06:08 PM.


Internet Brands, Inc.