M8 problems
Tourer
Joined: May 2006
Posts: 354
Likes: 13
From: pennsylvania
sadly thru the years the engines got sloppier clearances as the prices continue to increase!! M-8 prolly the best ever design excepting the evo sporty IF it were built correctly with good parts, but some are lucky others not so much!!!! kinda like a hi-roller at the casinos!!!!
Elite HDF Member
Joined: Jun 2007
Posts: 4,867
Likes: 268
From: People's Republic of Boulder Colorado
Are you a pessimist ? 
Most of the riders I have spoken to or riders on the forum who have driven a 2018 were very impressed with the ride, power and they expressed that the total experience on a 2018 model was much improved ! I understand that there is a problem with the trans migration fluid on a few of the models ( not Softails) but I assume this problem will be worked out . I have never been a Harley rider/owner but very impressed with the Fat Boy and will take delivery in April 2018 !
Most of the riders I have spoken to or riders on the forum who have driven a 2018 were very impressed with the ride, power and they expressed that the total experience on a 2018 model was much improved ! I understand that there is a problem with the trans migration fluid on a few of the models ( not Softails) but I assume this problem will be worked out . I have never been a Harley rider/owner but very impressed with the Fat Boy and will take delivery in April 2018 !So far, I haven't seen anything in these posts to make me alter that attitude, either.
Last edited by jpooch00; Oct 21, 2017 at 12:31 PM.
Elite HDF Member
Joined: Jun 2007
Posts: 4,867
Likes: 268
From: People's Republic of Boulder Colorado
Ya got that right!
sadly thru the years the engines got sloppier clearances as the prices continue to increase!! M-8 prolly the best ever design excepting the evo sporty IF it were built correctly with good parts, but some are lucky others not so much!!!! kinda like a hi-roller at the casinos!!!!
I bought my '15 Limited anyway. So far, at least, I think I got a good 'un.
Tourer
Joined: Sep 2016
Posts: 323
Likes: 76
From: Hartford, CT
6 decades is a long time to be disappointed and whinny.
Tourer
Joined: Dec 2013
Posts: 339
Likes: 9
From: Washington
Count me in for m8 problems. 2017 road glide special no engine mod at 14K.
First engine oil light came on at 9k, moco found engine oil migrating to primary chain case. They replace a seal, no more engine oil transfer.
Second at 12k miles, engine oil light illuminated again. Check dip stick and oil level at the middle, wtf! Took bike back to moco again and found a code about oil pressure sensor. They clear code and reset sensor connector.
Third, this time , my transmission oil dipstick showing no oil level anywhere at the dipstick. I can't believe my bike has transmission oil issue. My bike has no engine mod and rarely I run it at 3500rpm. But still my bike is not immune. I remember Harley bikes are notorious for an oil leak. This new designed engine M8, keep its oil inside. The oil doesn't get spit out anymore.
My bike is now approaching its 15k service. After reading at the other threads, moco has not yet develop a fix regarding this transmission oil issue.
In the meantime, I'll bring a quart of tranny oil with me on my trips.
One more thing, when people complement my bike at gas stops, I tell them thanks and also I'll make sure that they are aware of its issues.
If your m8 has no issues, lucky for you!
First engine oil light came on at 9k, moco found engine oil migrating to primary chain case. They replace a seal, no more engine oil transfer.
Second at 12k miles, engine oil light illuminated again. Check dip stick and oil level at the middle, wtf! Took bike back to moco again and found a code about oil pressure sensor. They clear code and reset sensor connector.
Third, this time , my transmission oil dipstick showing no oil level anywhere at the dipstick. I can't believe my bike has transmission oil issue. My bike has no engine mod and rarely I run it at 3500rpm. But still my bike is not immune. I remember Harley bikes are notorious for an oil leak. This new designed engine M8, keep its oil inside. The oil doesn't get spit out anymore.
My bike is now approaching its 15k service. After reading at the other threads, moco has not yet develop a fix regarding this transmission oil issue.
In the meantime, I'll bring a quart of tranny oil with me on my trips.
One more thing, when people complement my bike at gas stops, I tell them thanks and also I'll make sure that they are aware of its issues.
If your m8 has no issues, lucky for you!
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,925
Likes: 8,027
From: poway
Count me in for m8 problems. 2017 road glide special no engine mod at 14K.
First engine oil light came on at 9k, moco found engine oil migrating to primary chain case. They replace a seal, no more engine oil transfer.
Second at 12k miles, engine oil light illuminated again. Check dip stick and oil level at the middle, wtf! Took bike back to moco again and found a code about oil pressure sensor. They clear code and reset sensor connector.
Third, this time , my transmission oil dipstick showing no oil level anywhere at the dipstick. I can't believe my bike has transmission oil issue. My bike has no engine mod and rarely I run it at 3500rpm. But still my bike is not immune. I remember Harley bikes are notorious for an oil leak. This new designed engine M8, keep its oil inside. The oil doesn't get spit out anymore.
My bike is now approaching its 15k service. After reading at the other threads, moco has not yet develop a fix regarding this transmission oil issue.
In the meantime, I'll bring a quart of tranny oil with me on my trips.
One more thing, when people complement my bike at gas stops, I tell them thanks and also I'll make sure that they are aware of its issues.
If your m8 has no issues, lucky for you!
First engine oil light came on at 9k, moco found engine oil migrating to primary chain case. They replace a seal, no more engine oil transfer.
Second at 12k miles, engine oil light illuminated again. Check dip stick and oil level at the middle, wtf! Took bike back to moco again and found a code about oil pressure sensor. They clear code and reset sensor connector.
Third, this time , my transmission oil dipstick showing no oil level anywhere at the dipstick. I can't believe my bike has transmission oil issue. My bike has no engine mod and rarely I run it at 3500rpm. But still my bike is not immune. I remember Harley bikes are notorious for an oil leak. This new designed engine M8, keep its oil inside. The oil doesn't get spit out anymore.
My bike is now approaching its 15k service. After reading at the other threads, moco has not yet develop a fix regarding this transmission oil issue.
In the meantime, I'll bring a quart of tranny oil with me on my trips.
One more thing, when people complement my bike at gas stops, I tell them thanks and also I'll make sure that they are aware of its issues.
If your m8 has no issues, lucky for you!
Tourer
Joined: Dec 2013
Posts: 339
Likes: 9
From: Washington
Bike has multiple issues. First oil light, engine oil to primary. They fixed it by changing a seal between chambers. Second oil light, oil pressure sensor issue. They disconnect and reconnect the oil pressure sensor wires. Some other owners here on the forum, they have the moco replaced the sensor altogether. I want them to do same but moco says if it comes back then they'll replace the sensor.
Unfortunately, there is no tranny oil light indicator. It would've illuminated on me.
Many thanks to this forum. M8 owners like myself gave me heads up on what to expect.
Unfortunately, there is no tranny oil light indicator. It would've illuminated on me.
Many thanks to this forum. M8 owners like myself gave me heads up on what to expect.
Road Warrior
Joined: Apr 2017
Posts: 1,451
Likes: 230
From: United States
They changed to foot peg position on the 18 sporty didn't they 🤣
Gee Wiz 🙃
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Cruiser
Joined: Sep 2017
Posts: 119
Likes: 21
From: central illinois
Bike has multiple issues. First oil light, engine oil to primary. They fixed it by changing a seal between chambers. Second oil light, oil pressure sensor issue. They disconnect and reconnect the oil pressure sensor wires. Some other owners here on the forum, they have the moco replaced the sensor altogether. I want them to do same but moco says if it comes back then they'll replace the sensor.
Unfortunately, there is no tranny oil light indicator. It would've illuminated on me.
Many thanks to this forum. M8 owners like myself gave me heads up on what to expect.
Unfortunately, there is no tranny oil light indicator. It would've illuminated on me.
Many thanks to this forum. M8 owners like myself gave me heads up on what to expect.
Elite HDF Member
Joined: Jun 2007
Posts: 4,867
Likes: 268
From: People's Republic of Boulder Colorado
Awww, now reality's pissed somebody off...
BTW, I'm not disappointed at all. Low expectations from the get-go prevent that.
You should look into the "ignore" function in your user CP if what I have to say is so upsetting to you. It works great!
Last edited by jpooch00; Oct 22, 2017 at 08:10 AM.