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[DAD]

My bike has 11,000 miles on it with no issues untill yesterday.  During a trip yesterday running 70mph down the interstate my engine began heating up, oil pressure dropped to one third normal, lost power, exhaust much louder, and started spitting oil out the intake.  After stopping and shutting the engine off for about 10 minues, I restarted the engine and resumed the ride with everything normal.  About an hour latter the problems all came back.  Reapeated the process a few more times and it all kept repeating.  Stopped at a Harley and they did an update to the ecm and said all is well.  Rode the bike today and after 300 miles the issues all came back.  Stopped at another Harley dealer and they wouldn't touch it because they were not familiar with the V&H Fuelpak.  Now this evening the problem keeps coming back and I'm 500 miles from home!  Any help or suggestions would be appreciated.
Dennis

[Dan_Lockwood]

I do not have a Fuel Pak but do have the V&H Dresser Dual, Ovals and SE AC.  I'm not sure what problems you would have if you disconnected the Fuel Pak and just ran it as stock on the ECM.  If you can get it home that way, it may be the only option short of trailering it home.

This is what happened to my '08 SERK.  Not certain if this is the same thing or not, but on my '08 SERK I installed a PCM III, one of the very first ones available.  Within a couple thousand miles it started to backfire and eventually just started shutting off on me in heavy traffic.  I took off the seat and unplugged the PCM and put it back stock and rode it home without any further problems.  PCM had problems with the very first batch of controllers they made and they had to replace mine.

Maybe someone else can give you any indication of what it would hurt to drive it probably somewhat slower, but without the Fuel Pak installed.

Good luck and let us know what the problem turns out to be.

[sadunbar]

My bike has 11,000 miles on it with no issues untill yesterday.  During a trip yesterday running 70mph down the interstate my engine began heating up, oil pressure dropped to one third normal, lost power, exhaust much louder, and started spitting oil out the intake.  After stopping and shutting the engine off for about 10 minues, I restarted the engine and resumed the ride with everything normal.  About an hour latter the problems all came back.  Reapeated the process a few more times and it all kept repeating.  Stopped at a Harley and they did an update to the ecm and said all is well.  Rode the bike today and after 300 miles the issues all came back.  Stopped at another Harley dealer and they wouldn't touch it because they were not familiar with the V&H Fuelpak.  Now this evening the problem keeps coming back and I'm 500 miles from home!  Any help or suggestions would be appreciated.
Dennis

You may have a valve hanging open...  One of the issues with the heads is the valve guides moving.  A valve not seating could cause many of your symptoms...

[igofar]

Here is what I think;
Oil pump is worn resulting in too much oil remaining in the engine.(sumping)
Of course we all know what caused to oil pump too fail.....too much crankshaft runout!

Next time this happens, quickly check the oil level. If it is low and full of foam like bubbles, that would confirm my theory.

Good luck with this issue as the dealer's hands are tied as to diagnosis and repair methods.

PS. don't ask me how I know about this issue..

Brad...(running a new cam plate and oil pump with a crank that has too much run out!!)

[Gone Fishin']

I do not think the issues are related to the Fuelpack. The symptoms would appear not in the intervals you have described. It is with some certainty a mechanical problem and maybe related to the liner problems some of us have. I think you need to take the bike to your home dealer for the warranty work.

[grc]

Disconnect the Fuel Pak.  Assuming you still have the stock O2 sensors connected, the ECM will keep the air/fuel in the stock 14.7:1 range as long as you keep throttle opening below 50% and rpm's below about 4000.  It's unlikely that the problem is being caused by the Fuel Pak, but disconnecting it as a diagnostic check makes sense.

From your original description, including the loss of oil pressure and power and the oil blowing out the air cleaner, I would suspect wet sumping.  As igofar mentioned, this occurs when the scavenging side of the oil pump doesn't remove the oil from the crankcase.

Jerry

[Billy]

Check the crank sensor sometimes they will melt just one screw to remove. My bike had the same systems and that was the fix   Billy

[Eqcons]

I think you have a valve guide dropping as the motor gets hot. Been there, done that.....

Jim

[skreminegul07]

If its not an Ultra 110, it CANNOT be the valve guide.  If it were possible, MOCO would have replaced all 110 heads with new valve guides, right?

[miker]

 

[johnsachs]

 I doubt it's a valve guide,cause as they say "it's forever".
If a guide moved,you will have a loss of compression in that cylinder.I would look else where if the motor runs ok for some miles,and then starts to hiccup.
Wet sumping is very easy to check.1-Start engine
                                                2- run for several minutes,till warm.
                                                3- remove quarter inch pipe plug under cam chest,and measure the amount of oil that comes out.Anything over 8 oz. on the newer models,and you're sumping.(3 oz. on '06 and earlier).
John

[Eqcons]

I doubt it's a valve guide,cause as they say "it's forever".
If a guide moved,you will have a loss of compression in that cylinder.I would look else where if the motor runs ok for some miles,and then starts to hiccup.
Wet sumping is very easy to check.1-Start engine
                                                2- run for several minutes,till warm.
                                                3- remove quarter inch pipe plug under cam chest,and measure the amount of oil that comes out.Anything over 8 oz. on the newer models,and you're sumping.(3 oz. on '06 and earlier).
John

I'd like to agree with you John, but my dropped guide didn't behave how you (or I!) would have expected.  Motor ran fine, then started to hiccup. parked it, started it, fine. Ran a bit, parked it, started it, ran a bit, still fine. parked it overnight, valve guide jammed down when I tried to start it, game over...

Jim

[johnsachs]

Jim,
How many total miles would you say you went between when you first noticed a hiccup,and the guide actually causing a compression loss.
I see guides that have moved occasionally,and their to the point where the valve don't seat anymore,or there's valve to valve interference.
It may be possible that the circlip the MoCo put on the guide prevents it from dropping all at once,but lets it wollow the bore out till it drops.
John

[Eqcons]

Jim,
How many total miles would you say you went between when you first noticed a hiccup,and the guide actually causing a compression loss.
I see guides that have moved occasionally,and their to the point where the valve don't seat anymore,or there's valve to valve interference.
It may be possible that the circlip the MoCo put on the guide prevents it from dropping all at once,but lets it wollow the bore out till it drops.
John

Maybe 100 John.

BUT - the root of all the problems is where you say "It may be possible that the circlip the MoCo put on the guide.." because (yes, I had trouble believing this too!) there is NO circlip on the SE valve guides!! There is on the ordinary heads, but not on the SE heads.  I was stunned when I discovered that.  And, guess what they've introduced on the new 110 heads... 

Jim

[johnsachs]

I've noticed,as I have stated on this site,that the interference guide to bore fit,especially on the Mercury Marine castings,is only .001" to .0015" on most rpo heads from '05 and newer.
I just did a set of '08 110" heads( latest style),and was amazed at the position of the circlip.It serves no purpose what-so-ever.The guide interference fit was good at .002".
Ironiclly,I have only seen 3 guides that have moved in all the TC. heads that have come thru my doors.
John