2018 M8----Sumping? Failures?
#1
01-26-2018, 04:39 PM
2018 M8----Sumping? Failures?
You 2018 M8 Riders- Anyone have sumping issues yet? Engine failures?
I have not seen any 18's posted up with sumping issues yet. Issue solved for 2018's? Maybe new oil pump is working? Maybe the cylinders are machined and matched properly?
I have not seen any 18's posted up with sumping issues yet. Issue solved for 2018's? Maybe new oil pump is working? Maybe the cylinders are machined and matched properly?
Top Answer
02-28-2018, 07:53 PM
M8 Stage IV Engine Failures
Before you read my post keep in mind I’m not some internet wacko posting BS just because I have no lif. I’ve been in clubs for 20+ years and what I’ve posted below is real feedback
1. This is my5th HD bagger since 2005
2. I ride 15k miles a year, I’m very experienced and knowledge owner
3. Last November I dropped almost $50k on my dream bike. 2018 RGS with CVO stereo, Legend suspension and HD Stage IV installed upgrade. 4. In the first 1500 miles HD has replaced 4 long blocks under warranty. Each time oiling problems ran the pistons, cylinders and lifter bores in the case dry, major slumping issues and over heating cooked the engine. I’ve used up my AAA towing plan sending this bike back for warranty work. The factory area senior technician got involved and he has personally supervised the past 2-motors. The forth engine replacement so far has 300 miles on it and so far so good. I honestly am driving in 5-mile circles around my house putting miles on it. I’m only 90% confident they nailed it this time. Senior technician assured me if this don’t fix it they are going to buy the bike back.
This is has been a nightmare and I’ve learned a few things I’d like to share. Do not modify your bike with a aftermarket tuner or exhaust if you plan on getting warranty work done. They looked it over with a microscope trying to find a evidence of any mods. The senior told me if he saw evidence or a tuner he would have immediately flagged my bike and voided my warranty. He said there is not a tuner made that they cannot detect if. If you change the exhaust make sure you put the stock one back before sending it to the dealer. Don’t listen to your dealer when they say they will honor your warranty if modified. It don’t mean **** if the factory decides to investigate.
The stage IV makes fantastic torque and hp numbers with a SEPST and high flow screaming eagle exhaust. It sounds like **** but the performance is great. I had the bike on the dyno with a D&D exhaust and SE exhaust. The torque and hp numbers are almost identical. The only difference is sound and a voideed warranty. Not worth it. If anyone wants to give me $-300 for the $1800 D&D exhaust it’s yours. I love the sound but the chance of breaking down away from my garage and having to tow it to a dealer for a warranty work ain’t worth it. The motor company is investigating every Stage IV engine failure under warranty. They will ruin your day and stick you with a $10k bill.
Im reaching out to help other Stage IV owners who think otherwise. Until the motor company figures out why these engines are failing the are investigating.
If if you have any further questions hit me up
1. This is my5th HD bagger since 2005
2. I ride 15k miles a year, I’m very experienced and knowledge owner
3. Last November I dropped almost $50k on my dream bike. 2018 RGS with CVO stereo, Legend suspension and HD Stage IV installed upgrade. 4. In the first 1500 miles HD has replaced 4 long blocks under warranty. Each time oiling problems ran the pistons, cylinders and lifter bores in the case dry, major slumping issues and over heating cooked the engine. I’ve used up my AAA towing plan sending this bike back for warranty work. The factory area senior technician got involved and he has personally supervised the past 2-motors. The forth engine replacement so far has 300 miles on it and so far so good. I honestly am driving in 5-mile circles around my house putting miles on it. I’m only 90% confident they nailed it this time. Senior technician assured me if this don’t fix it they are going to buy the bike back.
This is has been a nightmare and I’ve learned a few things I’d like to share. Do not modify your bike with a aftermarket tuner or exhaust if you plan on getting warranty work done. They looked it over with a microscope trying to find a evidence of any mods. The senior told me if he saw evidence or a tuner he would have immediately flagged my bike and voided my warranty. He said there is not a tuner made that they cannot detect if. If you change the exhaust make sure you put the stock one back before sending it to the dealer. Don’t listen to your dealer when they say they will honor your warranty if modified. It don’t mean **** if the factory decides to investigate.
The stage IV makes fantastic torque and hp numbers with a SEPST and high flow screaming eagle exhaust. It sounds like **** but the performance is great. I had the bike on the dyno with a D&D exhaust and SE exhaust. The torque and hp numbers are almost identical. The only difference is sound and a voideed warranty. Not worth it. If anyone wants to give me $-300 for the $1800 D&D exhaust it’s yours. I love the sound but the chance of breaking down away from my garage and having to tow it to a dealer for a warranty work ain’t worth it. The motor company is investigating every Stage IV engine failure under warranty. They will ruin your day and stick you with a $10k bill.
Im reaching out to help other Stage IV owners who think otherwise. Until the motor company figures out why these engines are failing the are investigating.
If if you have any further questions hit me up
Last edited by THROTTL; 02-28-2018 at 08:11 PM.
#4
01-26-2018, 05:16 PM
Grand HDF Member
The technical service bulletin that Harley issued covers all 2017 and all 2018 M8's, so all are potentially capable of developing the sumping issue. And it is not limited to Stage III or Stage IV either, the service bulletin says that it could happen to any M8.
As far as I know, the oil transfer/migration issue is limited to Touring bikes, I don't think any Softail owner has reported that issue.
As far as I know, the oil transfer/migration issue is limited to Touring bikes, I don't think any Softail owner has reported that issue.
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#5
01-26-2018, 05:27 PM
The technical service bulletin that Harley issued covers all 2017 and all 2018 M8's, so all are potentially capable of developing the sumping issue. And it is not limited to Stage III or Stage IV either, the service bulletin says that it could happen to any M8.
As far as I know, the oil transfer/migration issue is limited to Touring bikes, I don't think any Softail owner has reported that issue.
As far as I know, the oil transfer/migration issue is limited to Touring bikes, I don't think any Softail owner has reported that issue.
Are you referring to TSB M1450? That one specifically says 2017. If you are referring to another TSB, please post it.
The 2018's are shipping with the "updated" Oil Pump and who knows if HD did anything else to help alleviate the issues. I posted the thread in hopes that NO ONE would post about a cratered 2018. That lasted all of 5 minutes.
#6
01-26-2018, 05:40 PM
Grand HDF Member
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#7
01-26-2018, 05:45 PM
Grand HDF Member
Yes I'm referring to 2018 model year bikes. Those with engines that were built prior to 10/10/17 are subject to, and I believe have been reported with, engine sumping.
As sixguns posted, the new service bulletin covers all iterations of the M8, all variations, all sizes (107, 114, 117) and all stages, and all models (softail, touring, trikes) and model years (2017 & 2018).
Those 2018 models built after 10/10/17 are supposed to have the new oil pump in them already. Anyone getting a Stage III or Stage IV upgrade, who doesn't already have the 10/10/17 oil pump, gets one installed.
I am keenly interested in this topic because I have a 2018 M8, that says it was built in 10/17. So I don't know if I have the new oil pump or not. Sad thing is, I believe there are already reports that the "new, improved" oil pump is not solving the issue. Note that in the service bulletin, they list no less than six oil pump part numbers that are considered "problem" part numbers. That includes pumps 62400178 and 62400182, which are the most recent pumps. They have apparently introduced a running change to the 62400178 and 62400182 as of 10/10/17, so that those pumps are supposed to fix the problem. But you're supposed to check the date on the box of the oil pump to know if it was made after 10/10/17.
As sixguns posted, the new service bulletin covers all iterations of the M8, all variations, all sizes (107, 114, 117) and all stages, and all models (softail, touring, trikes) and model years (2017 & 2018).
Those 2018 models built after 10/10/17 are supposed to have the new oil pump in them already. Anyone getting a Stage III or Stage IV upgrade, who doesn't already have the 10/10/17 oil pump, gets one installed.
I am keenly interested in this topic because I have a 2018 M8, that says it was built in 10/17. So I don't know if I have the new oil pump or not. Sad thing is, I believe there are already reports that the "new, improved" oil pump is not solving the issue. Note that in the service bulletin, they list no less than six oil pump part numbers that are considered "problem" part numbers. That includes pumps 62400178 and 62400182, which are the most recent pumps. They have apparently introduced a running change to the 62400178 and 62400182 as of 10/10/17, so that those pumps are supposed to fix the problem. But you're supposed to check the date on the box of the oil pump to know if it was made after 10/10/17.
Last edited by FatBob2018; 01-26-2018 at 05:51 PM.
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#9
01-26-2018, 06:07 PM
Grand HDF Member
Yes, but point being -- they've had six oil pumps already for the M8; the "revised" oil pumps make #'s 7 and 8. And IINM there have been reports from owners that even those part # oil pumps have sumped on 'em.
#10
01-26-2018, 06:07 PM
Grand HDF Member
I thought your bike was a 2017 CVO? Do you have a 2018 that it happened on?