Sumping Help
Thread Starter
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Stage III
Joined: Jun 2018
Posts: 3
Likes: 0
From: Houston
Sumping Help
I apologize if this is addressed, but I have read what I feel is thousands of pages on the M8 sumping issues and could still use some help.
My bike is a '17 Road King Special with a Stage 4. The first time I had a problem I thought it was just bad gas because it went away quickly after I ran more gas through it. After smelling burning oil and having the same problem again I took the bike in. The service guy told me he knew exactly what the problem was and I was already positive this was my issue after reading many forums, including this one.
They put my bike on the dyno and could not cause the power loss, so they took it for a 30 mile ride and still nothing. I told them that wasn't going to work and that it only has problems after I've been riding it more that that. They went to MOCO and were given some more tests to run and apparently the bike passed because they're saying that the problem can't be reproduced, so they won't do anything to fix the bike.
How were you guys able to show the dealer and MOCO that there was a problem? Any suggestions on how I can get them to fix the bike? It seems crazy to me that they know this is a problem and are completely unwilling to do anything about it. I guess they expect to fix it after I get stranded in the middle of nowhere with a blown motor.
Thanks in advance.
My bike is a '17 Road King Special with a Stage 4. The first time I had a problem I thought it was just bad gas because it went away quickly after I ran more gas through it. After smelling burning oil and having the same problem again I took the bike in. The service guy told me he knew exactly what the problem was and I was already positive this was my issue after reading many forums, including this one.
They put my bike on the dyno and could not cause the power loss, so they took it for a 30 mile ride and still nothing. I told them that wasn't going to work and that it only has problems after I've been riding it more that that. They went to MOCO and were given some more tests to run and apparently the bike passed because they're saying that the problem can't be reproduced, so they won't do anything to fix the bike.
How were you guys able to show the dealer and MOCO that there was a problem? Any suggestions on how I can get them to fix the bike? It seems crazy to me that they know this is a problem and are completely unwilling to do anything about it. I guess they expect to fix it after I get stranded in the middle of nowhere with a blown motor.
Thanks in advance.
Road Warrior
Joined: Apr 2007
Posts: 1,382
Likes: 404
From: Illinois
Try another dealer. Or make them aware of M1450, they should be pulling crank sensor and observing how much oil comes out. Or they are clueless, which is too often the case.
Last edited by VDeuce; Jun 11, 2018 at 05:51 PM.
Road Warrior
Joined: Sep 2016
Posts: 1,887
Likes: 1,059
From: SE Washington
Never heard of a dealer trying to replicate sumping by putting a bike on a dyno or doing short ride while looking for power loss.
There's a TSB from the MOCO for sumping, actually there are several.
Per the bulletin, they should be checking the amount of oil in the case by removing the crank position sensor. I've had some symptoms myself and watched them perform the test per the TSB; they got just shy of 5oz... I need to have checked again. Last I remember no more than 6oz should come out.
Ask your dealer to produce the TSB and ask them to perform the check based on that bulletin.
There's a TSB from the MOCO for sumping, actually there are several.
Per the bulletin, they should be checking the amount of oil in the case by removing the crank position sensor. I've had some symptoms myself and watched them perform the test per the TSB; they got just shy of 5oz... I need to have checked again. Last I remember no more than 6oz should come out.
Ask your dealer to produce the TSB and ask them to perform the check based on that bulletin.
Thread Starter
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Stage III
Joined: Jun 2018
Posts: 3
Likes: 0
From: Houston
Someone had posted a copy (one of the versions) of the service bulletins. I just sent that to them and will see what they say. I agree that it doesn't make any sense to expect the problem to show up in 10 revs of the motor on a dyno, but that's what they did.
05/23/18TECH STATES: GOT BIKE TO 300 DEGREES, PUT ON DYNO AND DID 10 PULLS. NO LOSS OF POWER. N.P.F. HAS NO
CODES, COULD NOT DUPLICATE PROBLEM.
05/23/18TECH STATES: GOT BIKE TO 300 DEGREES, PUT ON DYNO AND DID 10 PULLS. NO LOSS OF POWER. N.P.F. HAS NO
CODES, COULD NOT DUPLICATE PROBLEM.
Road Warrior
Joined: Apr 2007
Posts: 1,382
Likes: 404
From: Illinois
That is not the procedure the dealer monkeys should be following (goes to the clueless comment). I'd go to another dealer. 10 pulls on a dyno at 300 degrees? 
There are never any codes when sumping happens. Like I say, pull the CPS on their nice shiny floor and all will become evident, lol.
There are never any codes when sumping happens. Like I say, pull the CPS on their nice shiny floor and all will become evident, lol.
Last edited by VDeuce; Jun 11, 2018 at 06:19 PM.
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Seasoned HDF Member
Joined: Sep 2009
Posts: 17,138
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From: SE Michigan
That is not the procedure the dealer monkeys should be following (goes to the clueless comment). I'd go to another dealer. 10 pulls on a dyno at 300 degrees?
There are never any codes when sumping happens. Like I say, pull the CPS on their nice shiny floor and all will become evident, lol.
There are never any codes when sumping happens. Like I say, pull the CPS on their nice shiny floor and all will become evident, lol.
Just make it blow and get a new engine.
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