Need major help!!!
Thread Starter
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Intermediate
Joined: Jul 2010
Posts: 27
Likes: 2
Need major help!!!
I have a 2009 StreetGlide with a 103ci on it. A couple of months ago I noticed my oil pressure gauge acting funny. Sitting in neutral and revving the bike the oil pressure goes up and down as normal, and cruising down the road it's steady as normal, but when I get on it and ride under acceleration (slow or fast) the oil pressure consistently goes down until about midways through acceleration and then it goes back up to normal. Almost as if the oil was pushed to the back of the pan on acceleration away from the sump, but as I understand the baffle and sump design that's considered to be impossible. Before making any suggestions here is a list of things I've done and tried.
New SE billet cam plate and HO oil pump assy.
Oil change with new HD filter and Mobil 1 V-twin that I've run since I bought the bike
New sending unit
Manual oil pressure gauge installed directly at the sending unit port
All my local sources and mechanics are stumped. I've taken all the possibility of electrical out of the equation with the manual gauge so it's got to be mechanical.
I've seen experiences with this from searching and researching, but it always turned out to be a gauge, sending unit, or pressure relief valve. And I've never found an occurrance of it happening under acceleration like this one.
It all of a sudden started happening so it's a new problem. I'm running out of ideas. Any help would def be appreciated.
And NO it's not making any abnormal "no oil pressure" noises.
Thanks in advance.
New SE billet cam plate and HO oil pump assy.
Oil change with new HD filter and Mobil 1 V-twin that I've run since I bought the bike
New sending unit
Manual oil pressure gauge installed directly at the sending unit port
All my local sources and mechanics are stumped. I've taken all the possibility of electrical out of the equation with the manual gauge so it's got to be mechanical.
I've seen experiences with this from searching and researching, but it always turned out to be a gauge, sending unit, or pressure relief valve. And I've never found an occurrance of it happening under acceleration like this one.
It all of a sudden started happening so it's a new problem. I'm running out of ideas. Any help would def be appreciated.
And NO it's not making any abnormal "no oil pressure" noises.
Thanks in advance.
Last edited by noxcuse1973; Aug 10, 2019 at 12:04 PM.
HDF Community Team
Joined: Jun 2006
Posts: 12,776
Likes: 2,607
From: san antonio
How long since the SE billet cam plate was installed? The oil pressure relief valve (piston) could be sticking in the bore. When installing the any new cam plate it is always a good idea to remove the piston from the bore, polish it up and make sure it moves freely in the bore.
HDF Community Team
Joined: Jun 2006
Posts: 12,776
Likes: 2,607
From: san antonio
So check the primary fluid level and do compression and leak down test. Right now, you have nothing but a noise you can't find. Even with a stethoscope, internal noises are hard to locate.
Thread Starter
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Intermediate
Joined: Jul 2010
Posts: 27
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Ok. So I'm confused. The primary level is full, and what does the compression and leakdown test have to do with oil pressure? It's not even in the loop of the oiling system except at the bearing level. More info please?
Thread Starter
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Intermediate
Joined: Jul 2010
Posts: 27
Likes: 2
And the motor on it only has about 6000 miles so I would be extremely shocked if compression was off of low. But then again what does either of those have to do with oil pressure straight off the pump?
HDF Community Team
Joined: Jun 2006
Posts: 12,776
Likes: 2,607
From: san antonio
Your previous posts indicated that the issue presented with the OEM cam plate; was this with the same pressure gauge and sending unit? Based on what you have posted, I would still be checking the movement of the piston in the bore of the cam plate and I would also by trying another gauge. If the issue presents with a new gauge, I would be trying another sending unit to eliminate both as the source and start looking elsewhere.
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HD EFI Guru
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I have a 2009 StreetGlide with a 103ci on it. A couple of months ago I noticed my oil pressure gauge acting funny. Sitting in neutral and revving the bike the oil pressure goes up and down as normal, and cruising down the road it's steady as normal, but when I get on it and ride under acceleration (slow or fast) the oil pressure consistently goes down until about midways through acceleration and then it goes back up to normal. Almost as if the oil was pushed to the back of the pan on acceleration away from the sump, but as I understand the baffle and sump design that's considered to be impossible. Before making any suggestions here is a list of things I've done and tried.
New SE billet cam plate and HO oil pump assy.
Oil change with new HD filter and Mobil 1 V-twin that I've run since I bought the bike
New sending unit
Manual oil pressure gauge installed directly at the sending unit port
All my local sources and mechanics are stumped. I've taken all the possibility of electrical out of the equation with the manual gauge so it's got to be mechanical.
I've seen experiences with this from searching and researching, but it always turned out to be a gauge, sending unit, or pressure relief valve. And I've never found an occurrance of it happening under acceleration like this one.
It all of a sudden started happening so it's a new problem. I'm running out of ideas. Any help would def be appreciated.
And NO it's not making any abnormal "no oil pressure" noises.
Thanks in advance.
New SE billet cam plate and HO oil pump assy.
Oil change with new HD filter and Mobil 1 V-twin that I've run since I bought the bike
New sending unit
Manual oil pressure gauge installed directly at the sending unit port
All my local sources and mechanics are stumped. I've taken all the possibility of electrical out of the equation with the manual gauge so it's got to be mechanical.
I've seen experiences with this from searching and researching, but it always turned out to be a gauge, sending unit, or pressure relief valve. And I've never found an occurrance of it happening under acceleration like this one.
It all of a sudden started happening so it's a new problem. I'm running out of ideas. Any help would def be appreciated.
And NO it's not making any abnormal "no oil pressure" noises.
Thanks in advance.
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