2005 Dyna using excessive oil.
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4th Gear
Joined: Mar 2017
Posts: 8
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From: Brunswick GA
2005 Dyna using excessive oil.
10K miles, no smoke at all anytime, plugs fine, using at least 1 quart per 1,500 miles maybe more.
even after a 60 mile ride can see oil level drop a little.
maybe exhaust valve seals leaking oil into pipes?
even after a 60 mile ride can see oil level drop a little.
maybe exhaust valve seals leaking oil into pipes?
Road Warrior
Joined: Jul 2012
Posts: 1,566
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From: Londonderry, NH
05's had problems with valve seals. That's where I would start looking. It was a very common problem.
Banned
Joined: Jan 2017
Posts: 894
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From: Jacksonville FL
If ignition plugs are black:
clean plugs with torch or install new plugs. Mark them with touch up paint to know plugs position in heads. Run engine for a minute, remove plug and check if it is black from intake valve side. I don't know how long it will take for your plugs to get black from one side, it can be 1 min. or 10 miles riding. If you keep them there too long, they will get black completely and you'll lose your chance to catch right time for diagnosis.
clean plugs with torch or install new plugs. Mark them with touch up paint to know plugs position in heads. Run engine for a minute, remove plug and check if it is black from intake valve side. I don't know how long it will take for your plugs to get black from one side, it can be 1 min. or 10 miles riding. If you keep them there too long, they will get black completely and you'll lose your chance to catch right time for diagnosis.
Thread Starter
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4th Gear
Joined: Mar 2017
Posts: 8
Likes: 0
From: Brunswick GA
If ignition plugs are black:
clean plugs with torch or install new plugs. Mark them with touch up paint to know plugs position in heads. Run engine for a minute, remove plug and check if it is black from intake valve side. I don't know how long it will take for your plugs to get black from one side, it can be 1 min. or 10 miles riding. If you keep them there too long, they will get black completely and you'll lose your chance to catch right time for diagnosis.
clean plugs with torch or install new plugs. Mark them with touch up paint to know plugs position in heads. Run engine for a minute, remove plug and check if it is black from intake valve side. I don't know how long it will take for your plugs to get black from one side, it can be 1 min. or 10 miles riding. If you keep them there too long, they will get black completely and you'll lose your chance to catch right time for diagnosis.
If exhaust valve seal is leaking will it show on plugs or just get pushed out pipes?
My plugs look good. The only time they looked bad was when I was running lower rpms before I discovered these TCs like to spin, not be bogged etc.
I have stage one cleaner and pipes.
Bought bike with 8,000 miles, 9,500 miles noticed oil usage, now I have 11,800 on it.
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Road Master
Joined: Jan 2006
Posts: 1,221
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From: Chester NY
A lot of the times when the seals go bad, the plugs have a crusty deposit on them.
Have done my fair share of seals on 05 bikes. Crappy seals, be sure to use the updated version if doing. There is a pictorial in the bigboyz website.
Have done my fair share of seals on 05 bikes. Crappy seals, be sure to use the updated version if doing. There is a pictorial in the bigboyz website.
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HDF Community Team
Joined: Jun 2006
Posts: 12,776
Likes: 2,607
From: san antonio
Replace the valve guide seals; many were replaced under warranty. A widely know problem and the MoCo issue tech bulletin on the crappy seals. '05 was first year for beehive springs and new guide seals.
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4th Gear
Joined: Mar 2017
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From: Brunswick GA
oil usage update - great news maybe
After reading many different threads/posts, I let my oil level go down to 1/4 inch above add(1 quart) level. Ran it three 60 mile rides, on my twisty county roads. Some light throttle, but also romping through corners in 4th gear. Checked oil level EXACTLY the same way 3 times and ABSOLUTELY no oil loss. 
Before last ride I took off air cleaner and I saw some oil on blow-by tubes in intake. I have the stage one a/c and exhaust. Maybe my bike is SUPER sensitive to oil level blow by issues.
I will let oil remain at that level a few more rides, then empty pan, sump, and change/drain filter to measure EXACTLY how much oil was in system at that particular oil level. BTW, my oil level is about the same hot/cold.
Been chasing this problem for 2 years. I like this bike more than any other, but I was ready to change valve seals or sell it.
Before last ride I took off air cleaner and I saw some oil on blow-by tubes in intake. I have the stage one a/c and exhaust. Maybe my bike is SUPER sensitive to oil level blow by issues.
I will let oil remain at that level a few more rides, then empty pan, sump, and change/drain filter to measure EXACTLY how much oil was in system at that particular oil level. BTW, my oil level is about the same hot/cold.
Been chasing this problem for 2 years. I like this bike more than any other, but I was ready to change valve seals or sell it.
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