Sumping Issue? 2017 SG CVO
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Joined: Jul 2009
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I have a friend with an 18 CVO SG and had similar symptoms. First he noticed it was losing power. Pulled over and checked the oil and there was none on the dipstick so we assumed it was sumping. It was in the crankcase. Long story short, the dealer was thinking it was sumping and as they were going through the process, found that there were metal shavings left in it from the manufacturing process and those clogged the oil return passages. Currently waiting on new engine along with anything else engine oil flowed through.
Sounds like someone would rather blame the assembly factory than the engineers that designed the engine. Easier to pass off the engine failure as a “one off” rather than a systemic engine design problem.
Not buying metal shavings from factory. Sounds more like sumping which caused overheating and bearing failure. That bearing material is what blocked the oil passages. Thats classic engine failure from sumping.
Sounds like someone would rather blame the assembly factory than the engineers that designed the engine. Easier to pass off the engine failure as a one off rather than a systemic engine design problem.
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Joined: Jul 2009
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I had the opportunity to look at the engine torn apart as well as speak with the mechanic working on it and pretty sure he was not playing the blame game... Why would he? (rhetorical question). **** happens... My M8 was back in the shop after it's first road trip because the rear head was defective causing a pretty serious oil leak. It was replaced and has been good to go since..
Maybe someone else can explain how an oil passage blocked with metal shavings can create a sumping condition (too much oil in crankcase, low oil in pan), because I can't get there based on your description.
Last edited by Heatwave; Aug 6, 2018 at 08:58 AM.
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Road Captain
Joined: Aug 2012
Posts: 579
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From: Texas
I have a friend with an 18 CVO SG and had similar symptoms. First he noticed it was losing power. Pulled over and checked the oil and there was none on the dipstick so we assumed it was sumping. It was in the crankcase. Long story short, the dealer was thinking it was sumping and as they were going through the process, found that there were metal shavings left in it from the manufacturing process and those clogged the oil return passages. Currently waiting on new engine along with anything else engine oil flowed through.
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Road Captain
Joined: Aug 2012
Posts: 579
Likes: 38
From: Texas
Well I picked it up today. Service writer was like we couldn't duplicate the sumping. I haven't looked but I bet it has the same mileage or very close to what it went in. Writer was like what TSB? Of course the front breaks, that literally cause the bars to wobble when you touch the breaks at 70 were, "Within spec" so they couldnt do anything with them.So far, This dealer was completely useless. They were happy put a back tire on it (Screw in it) under extended plan, but only after me having to call and explain to them how to verify coverage.
The good news is. On the way to pick mine up, I spoke with another dealer who was quick to say they have had quite a few bikes that sumped. He explained, they were more than happy to ride it for an extended time so they could be sure to cause it to sump so they could address the known issue.
In any case, I'm going to ride it for a few weeks and figure out exactly what it takes to make it sump.
The part that gets me is I don't mind being Harley's beta tester on this motor, if their dealers would work to address well documented and known issues as opposed to saying we couldn't duplicate, instead of wasting peoples time running back and forth.
I just went and looked and they rode the bike a grand total of 4 miles. No wonder they couldn't duplicate. Funny, since the GM told me he would run it on the DYNO or whatever it took to verify the issue.
The good news is. On the way to pick mine up, I spoke with another dealer who was quick to say they have had quite a few bikes that sumped. He explained, they were more than happy to ride it for an extended time so they could be sure to cause it to sump so they could address the known issue.
In any case, I'm going to ride it for a few weeks and figure out exactly what it takes to make it sump.
The part that gets me is I don't mind being Harley's beta tester on this motor, if their dealers would work to address well documented and known issues as opposed to saying we couldn't duplicate, instead of wasting peoples time running back and forth.
I just went and looked and they rode the bike a grand total of 4 miles. No wonder they couldn't duplicate. Funny, since the GM told me he would run it on the DYNO or whatever it took to verify the issue.
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Well my friends 2017 trike sumped on the dyno but had been doing that before the dyno and he just thought it was down on power, he also has the oil transfer as well, go figure. It's at the dealer now awaiting on oil pump.
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Last edited by hollandhunter; Aug 11, 2018 at 01:02 PM.
