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[GMR-PERFORMANCE]

well the 2020 pump is now a 50/50 split where as it was a 60/40 they altered the return side rotors and with the seal which is not new it seems to be working very well thus far . the sumping is odd it really is many times you left wondering what the heck is going on when there is no smoking gun

[JONNIEROCK]

I handed over my 19 to the dealer last week to have them look at sumping issues. Interestingly, I can (somewhat) consistently reproduce the problem. Read on if you're interested.

Attached is a map of a portion of La Crosse County, WI. Position #1 is at the top of a bluff at the mouth of County Road FO, which has some nice corners to carve, and which loses about 460 feet of elevation by the time you get to position #2, roughly 2 miles down the hill. After attacking the corners in a very spirited way, I slow down to highway speed at position #2 and and by position #3, roughly another 2 miles down the road, the bike exhibits power loss and high heat, which I assume is sumping. I stop at position #4, a golf course, to let the bike idle and it clears up in 5 minutes or so.

About 350 of the 460 feet of the elevation drop occurs in the first 3000 feet of road between #1 and #2.

I've had this happen 3 or 4 times, always in the same spot and in the same manner. But the bike has never exhibited this behavior anywhere else and at no other time during the 5k miles I put on this year.

So I explain this to the dealer and I'm waiting for them to let me know what they're going to do. I want them to give me the 2020 pump. We shall see.

          Nice area. I'm about 50 miles north of the twin cities. Couple times a year I ride to lacrosse. I really like 108 out of West Salem and head north to Melrose. please keep us updated with the results of you ride.

[GB506]

          Nice area. I'm about 50 miles north of the twin cities. Couple times a year I ride to lacrosse. I really like 108 out of West Salem and head north to Melrose. please keep us updated with the results of you ride.

HD had the dealer put it on the dyno and measure fluid. Measured 4.5oz and 2oz on the two tests, below the supposed 6oz threshold HD needs to see before they would swap the pump for a 2020 version.

Deformed crank position sensor indicates high heat at some point, so they have to know I’m not BSing them.

Appealing the ruling at this point.

If I can reproduce the problem it’s only a matter of time before it goes, IMHO.



Sent from my iPhone using Tapatalk

[Billy]

Sumping Solved?      Looks like no one has had a issue with sumping since the 2020  pump. Woodstock HD says they have not one sump with new pump. Hope it is true my friend is buying a new ultra .  Billy

[J.D.]

Only 4 model years to get the oil pump design right...maybe?  That's not too bad I guess.