I was on another H-D wed site and there was a discussion on sumping. They never said what sumping is. Can someone tell me what sumping is? Has anyone on this forum experienced sumping? Curious minds would like to know.
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Sumping?
I was on another H-D wed site and there was a discussion on sumping. They never said what sumping is. Can someone tell me what sumping is? Has anyone on this forum experienced sumping? Curious minds would like to know.
Think sump pump - relocating a liquid elsewareOriginally Posted by gtpalin
I was on another H-D wed site and there was a discussion on sumping. They never said what sumping is. Can someone tell me what sumping is? Has anyone on this forum experienced sumping? Curious minds would like to know.
2012 Triglide Piaggio MP3 500 to get groceries 1991 FLHS as back up
"Better to have it and not need it than need it and not have it !"
Tiffany, Olive, Daisy, “The Three Musketeers” together again.
Sumping is when/if the check valve in the oil pump is not working properly and too much oil ends up in the crankcase ....And can cause a lot of blow-bye into the air filter among other problems..
Sometimes a Cigar is Just a Cigar.....
2019 Tri-Glide.......
The oil pump cannot keep up with volume of oil, too much oil in the case, BIG loos of power
Bad Ju Ju with the M8 is being reported
H D is on oil pump #3 or 4 now to solve this problem
Nuff Said," Were Burnin Daylight, Lets Ride"(Sober 37 years)
Current ride : 2021 FREEWHEELER M8, oldest ride 1960 FL
Jack, have you heard if the S&S oil pump recently released for the M8 solves the issue?
I had initially thought the sumping issue was just with riders that did stage 2, 3 or 4 upgrades
2017 Harley Davidson Freewheeler (107 cu.in. vivid black).
S and S or Fueling will solve this problem IMO
I have read brand new engines with 0 upgrades were sumping, tho I have NO first hand info on this
IMO HD new this may be a problem seeing how they already had a quick check for the techs to see if the engines were sumping
Nuff Said," Were Burnin Daylight, Lets Ride"(Sober 37 years)
Current ride : 2021 FREEWHEELER M8, oldest ride 1960 FL
Even the Twin Cams can have sumping issues. As the crank shifts, even a little, the oil pump is not as strong to scavenge all the oil out. We've seen this more than a few times. (this leaves oil in the bottom of the engine, the flywheels must travel thru that oil, causing the loss of power that Jack mentioned)
The M8 has a variety of oil problems....sumping and oil migration....but only on some, and the reason(s) seem to be unclear, thus no fix seems to be working.
Aftermarket fixes will undoubtedly void the warranty...replacing internal parts of the engine are a sure way to do that.
Rumor is that HD is working on new cases for the M8 in an effort to fix this on upcoming models.
Kevin
Classic Triumphs have this problem if they sit too long without being started, but the oil goes back where it's suppose to once you start the bike. Not sure if this is the case with Harleys. Nice to see some new Harleys have similar issues as 50/60 year old British bikes. Geez.
When i dropped my trike off at the dealership i was talking to a tech and he said he was working on a trike with 420 miles on it blowing oil out of the air cleaner.
I'll bet if you ask the Service writer at different dealer...The'll tell you they never ''Heard'' of it...In order to get a job as a service writer you have to be hard of Hearing...
Sometimes a Cigar is Just a Cigar.....
2019 Tri-Glide.......
My 91 evo will puke if sittin a while, just put a clean drain pan under the breather ,catch it ,then dump it bback in ☎️
2012 Triglide Piaggio MP3 500 to get groceries 1991 FLHS as back up
"Better to have it and not need it than need it and not have it !"
Tiffany, Olive, Daisy, “The Three Musketeers” together again.
My Tri-Glide sumped after the dealer installed big bore cylinders. It had the power of a Honda 250 rebel, and struggled to get above 3500 rpms. They replaced the oil pump with the new one (4th revision) and so far, so good.....
YMMV
Lon
Other than a loss of power or excess oil on the air filter, any other telltale symptoms to watch for?
Heat, top end rattling noise
Nuff Said," Were Burnin Daylight, Lets Ride"(Sober 37 years)
Current ride : 2021 FREEWHEELER M8, oldest ride 1960 FL
I wonder if its similar to Hydro -lock....Except with oil and not water...
When my Sons were young they at times went in water just a little too deep with the ATC's...And lock up the engine, I would pull the spark plug and turn the engine over with the pull start...The water would blow out the cylinder then put the plug back in. Those Honda's always started right up and would run for ever..
Sometimes a Cigar is Just a Cigar.....
2019 Tri-Glide.......
The sumping is TOO much oil in the bottom of the case
I guess if enuff oil gathered it could mimic Hydro locking a bit
tho with hydro locking if you dont get the liquid out of the cylinders like you did it would be easy to bend a rod = Very bad JU JU
Nuff Said," Were Burnin Daylight, Lets Ride"(Sober 37 years)
Current ride : 2021 FREEWHEELER M8, oldest ride 1960 FL
probably over filled the oil tank. many don't let the eng idle before shutting it off
Sumping
My tri glide had an issue this weekend, it’s in the shop. Loss of power, engine shaking, smell of oil, sounds like it is missing, maybe one or two of the plugs oil fouled. Just turned 2300 mi. Happened on decelerationabout 2700 rpm. Had to run it about 75 miles to get to the dealer, so that gave it a chance to clear it up a bit. Waiting to hear.
When that happened did the check engine light go on....?
Sometimes a Cigar is Just a Cigar.....
2019 Tri-Glide.......
No, I didn’t see it. The exhaust got loud and it started running rough, didn’t have full power. The exhaust got rather hot, but cooled then got hot again. I kept going not pushing to hard, as I heard the miss. Engine wasn’t rattling or making strange noises. Going up hills was harder with the miss, but it wasn’t running on one cylinder either.
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