When the motor is started is expells the oil out the When the oil settles in the bottom end, we call it "oil sumping". It reminds me of the internet chatter over the twin cam chain tension shoe era. The S&S won't keep that from happening, but it should clear it soon after you stand the bike up straight. Method: 1) start the bike and do a short warm-up ride 2) stop the bike whilst still vertical 3) put bike on lifter 4) remove hex grub screw under crankcase on RHS of bike. (1.) Here, Kevin Cameron notes several solutions and how they worked. That's the claim this week on Facebook, from a guy in Oregon in a Road Glide group who has posted a story and a couple of photos. They didn’t. I have a 2018 Tri Glide and having the same problem with trans oil going into the primary. The local dealership could not fix, so Harley flies down their lead regional tech. This may be root of some folks sumping issues. You shouldn’t have the sumping issue because your 18 should have the superseded oil pump. - Answered by a verified Motorcycle Mechanic changing the ignition does not affect breather timing. Also, that's why if you idle it on the side stand there may be some extra oil collect in the sump. The check valve is used to keep the oil in the oil tank when the engine isn't running. Over time, this leak could affect other components of your Harley and lead to a much more expensive fix. Many schemes have been employed to overcome wet-sumping. Another factory fix is a vent on the primary, so far the vent looks promising and word is the new bikes are coming with it. Lots of outrage from owners and denial from the MoCo. If you look at the oil pump there are two towers with big screws on the top of them. I noticed today that I have some oil dripping from my Harley air cleaner housing onto the right side of the motor. Recently a local Norton owner installed an oil pressure gauge on his Commando only to find the readings were 40 p.s.i. It’s been two years and some problems have bubbled up to HD attention. Their theory was that the primary was forming a vacuum as it cooled and sucking oil from the transmission. Harley needs to step up and take care of this issue at no cost to the customers that bought these bikes!!!!!!!!!!!!!!! The symptoms of this is typically excessive smoking and oil coming out the engine breather tube. Unbolting the CKP isn’t hard and only involves a 3/16” Allen. 7 Harley-Davidson Motorcycles To Avoid Like The Plague (12 Worth Every Dollar) No one can deny the quality of Harley Davidson bikes, but that doesn't mean the company hasn't produced a few duds. Shimming the relief valve did not improve things but careful lapping brought the pressure up to 65 p.s.i. After some test runs, they have the oil Early Harley-Davidson engines, like the 1911 F-Head, didn't bother recirculating oil. Also, early Harleys didn't even have a recirculating oil system. First two positions were either too high or had too much hose. Of course, a transmission with low or no oil will certainly fail and need to be repaired or completely replaced. My old 1983 shovel is spewing oil on the ground when it hasn't been started for a while (a week or more). Harley expects to start the recall, including … The repair is expected to take about a half-hour. I think it is because oil is seeping past the check valve ball in the oil pump and into the crankcase. Harley Davidson Touring: How to Create Bypass Breathers Air cooled bikes like Harley big twins expand and contract with the heat soaking into the cylinders, much more so than a water cooler bike, or a car. Bigtwin Harley's will sump a bit a especially after sitting a bit, but this much is way too much. Harley-Davidson photo. Loss of top end power, bike couldn't get out of its own way, eventually started spitting oil out through the air cleaner. The shorter one of the 2 houses the check ball.Now when you release the screw do not lose the spring that is under there. I think it’s mounted beside the oil tank now and he hasn’t had issues since. cold and 35-40 p.s.i. hot. Shown is a stock Twin Cam cam support plate with the pressure relief valve, relief spring and roll pin removed. It'll be my first Harley. The fix: Installing a new 2020 Harley oil pump is the only fix, which now comes stock on those 2020 and newer Harley models with the Milwaukee-Eight motor. Harley Davidson review rated 2.2/5.0 with 11 Comments: M8 motor with stage 4 kit all factory authorized parts, engine still sumping after going threw a few different... @PissedConsumer1634514 Your so wrong have a few friends with 2018 and one with a 2019. It’s not much, but I’m concerned. I read about this fix.It looked good, but I didn't want to take off the pump. The Harley-Davidson name is as synonymous with motorcycles as … The check valve in the oil pump is a ball and spring, item 11 and 12 on this diagram. Harley oil transfer is when oil moves over from the transmission into the primary case. Oil leaks affect your Harley’s performance, but also your safety. Wet-sumping is a condition where oil, instead of returning to the oil tank, builds up in the crankcase and cam gearcase, causing excessive friction and power loss. Quick check:Tools: hex keys, measured 1 litre container, oil-proof Loctite. hot. started after changing oil. Sorry for the pun but I’ve been reading about oil sumping in the new Harley Milwaukee 8 engines. Sadly there are now a couple 19 CVOs that have sumped I have read. There are two causes for this: Oil is not returning to the tank or oil is seeping through the pump while the engine is sitting unused. 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