cylinder cutting out
Thread Starter
|
Outstanding HDF Member
Joined: May 2014
Posts: 3,410
Likes: 143
From: Palm Desert,CA
cylinder cutting out
I've read in many threads that once the engine gets overheated beyond a certain point the rear cylinder cuts out.
I'm wondering when this generally happens and is it pretty obvious? Does it sound completely different, feel completely different?
I have fans and oil cooler on my bike but the summers here are regularly 115 degrees plus. Engine temp when ambient temps are 100-103 still get to 300 or so, with traffic and such. Can't imagine 115, On those days I probably won't be riding much (the wind feels like a blast furnace), but when I do I'm wondering if I should keep to short rides or rides where I'm heading out of the desert and into the mountains, San Diego, etc.
I'm wondering when this generally happens and is it pretty obvious? Does it sound completely different, feel completely different?
I have fans and oil cooler on my bike but the summers here are regularly 115 degrees plus. Engine temp when ambient temps are 100-103 still get to 300 or so, with traffic and such. Can't imagine 115, On those days I probably won't be riding much (the wind feels like a blast furnace), but when I do I'm wondering if I should keep to short rides or rides where I'm heading out of the desert and into the mountains, San Diego, etc.
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,139
Likes: 7,653
From: Poolville
That EITMS system, does that work on the same theory as a knock sensor circuit Used on cars in the eighties? Takes timing out?
Seasoned HDF Member
Joined: Apr 2014
Posts: 5,815
Likes: 2,555
From: UK
My bike has EITMS on it - and it is set to cut in at an engine temperature of 175C (350F).
It works in three stages (according to the notes in my Powervision tunes)
Mode 1: AFR enrichment - Mode 1 will be activated if engine temp is greater than "x" and RPM is less than 1200
Mode 2: Skip Fire - Mode 2 only activates if Mode 1 is already active AND the vehicle temperature exceeds "y" AND the vehicle speed is less than 1-2Kph
These are the main modes, but there is also a newer Mode 3 revealed in newer Powervision tunes. The notes say:
Mode 3: Mode 3 attempts to change spark and idle speed to protect a hot engine at low speed. Once the vehicle gets below this speed (and other conditions are met) Mode 3 protection enables.
Power vision let's you set the relevant temperatures for Mode 1 and Mode 2, plus the temperature and speed for Mode 3.
And to Robby's question - yes it's very noticeable. It comes on if you are stuck in traffic on a hot day. The rear cylinder cuts out, so the idle sounds much lower speed and more lumpy....
(EDIT: I think ALL Dynas have it now - not sure what year this came in, but my 2014 Dyna manual says it's standard)
It works in three stages (according to the notes in my Powervision tunes)
Mode 1: AFR enrichment - Mode 1 will be activated if engine temp is greater than "x" and RPM is less than 1200
Mode 2: Skip Fire - Mode 2 only activates if Mode 1 is already active AND the vehicle temperature exceeds "y" AND the vehicle speed is less than 1-2Kph
These are the main modes, but there is also a newer Mode 3 revealed in newer Powervision tunes. The notes say:
Mode 3: Mode 3 attempts to change spark and idle speed to protect a hot engine at low speed. Once the vehicle gets below this speed (and other conditions are met) Mode 3 protection enables.
Power vision let's you set the relevant temperatures for Mode 1 and Mode 2, plus the temperature and speed for Mode 3.
And to Robby's question - yes it's very noticeable. It comes on if you are stuck in traffic on a hot day. The rear cylinder cuts out, so the idle sounds much lower speed and more lumpy....
(EDIT: I think ALL Dynas have it now - not sure what year this came in, but my 2014 Dyna manual says it's standard)
Last edited by adm; May 17, 2016 at 03:11 PM.
Thread Starter
|
Outstanding HDF Member
Joined: May 2014
Posts: 3,410
Likes: 143
From: Palm Desert,CA
My bike has EITMS on it - and it is set to cut in at an engine temperature of 175C (350F).
It works in three stages (according to the notes in my Powervision tunes)
Mode 1: AFR enrichment - Mode 1 will be activated if engine temp is greater than "x" and RPM is less than 1200
Mode 2: Skip Fire - Mode 2 only activates if Mode 1 is already active AND the vehicle temperature exceeds "y" AND the vehicle speed is less than 1-2Kph
These are the main modes, but there is also a newer Mode 3 revealed in newer Powervision tunes. The notes say:
Mode 3: Mode 3 attempts to change spark and idle speed to protect a hot engine at low speed. Once the vehicle gets below this speed (and other conditions are met) Mode 3 protection enables.
Power vision let's you set the relevant temperatures for Mode 1 and Mode 2, plus the temperature and speed for Mode 3.
And to Robby's question - yes it's very noticeable. It comes on if you are stuck in traffic on a hot day. The rear cylinder cuts out, so the idle sounds much lower speed and more lumpy....
(EDIT: I think ALL Dynas have it now - not sure what year this came in, but my 2014 Dyna manual says it's standard)
It works in three stages (according to the notes in my Powervision tunes)
Mode 1: AFR enrichment - Mode 1 will be activated if engine temp is greater than "x" and RPM is less than 1200
Mode 2: Skip Fire - Mode 2 only activates if Mode 1 is already active AND the vehicle temperature exceeds "y" AND the vehicle speed is less than 1-2Kph
These are the main modes, but there is also a newer Mode 3 revealed in newer Powervision tunes. The notes say:
Mode 3: Mode 3 attempts to change spark and idle speed to protect a hot engine at low speed. Once the vehicle gets below this speed (and other conditions are met) Mode 3 protection enables.
Power vision let's you set the relevant temperatures for Mode 1 and Mode 2, plus the temperature and speed for Mode 3.
And to Robby's question - yes it's very noticeable. It comes on if you are stuck in traffic on a hot day. The rear cylinder cuts out, so the idle sounds much lower speed and more lumpy....
(EDIT: I think ALL Dynas have it now - not sure what year this came in, but my 2014 Dyna manual says it's standard)
Cruiser
Joined: Jun 2014
Posts: 234
Likes: 45
From: Spain
For the sounds it must be the EITMS kicking in.
If you want to be sure, cool down the bike, start it and remove the rear plug connector, if the sound changes to the same as you're experiencing, that's it.
If you want to be sure, cool down the bike, start it and remove the rear plug connector, if the sound changes to the same as you're experiencing, that's it.
Trending Topics
Club Member
Joined: Oct 2011
Posts: 11,176
Likes: 2,484
From: Nor Cal
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
6 Weirdest Harley-Davidsons Ever Sold to the Public
Verdad Gallardo
7 Times Harley-Davidson Chucked Tradition Out the Window
Verdad Gallardo
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
Thread Starter
|
Outstanding HDF Member
Joined: May 2014
Posts: 3,410
Likes: 143
From: Palm Desert,CA
So ultimately this only happens at idle and not when riding?
Just took a look, mine was set to come on when engine hit 284 degrees F. I raised it to 340 degrees. I don't think it was causing any grief but my engine does get to 285 pretty often!
Just took a look, mine was set to come on when engine hit 284 degrees F. I raised it to 340 degrees. I don't think it was causing any grief but my engine does get to 285 pretty often!
Last edited by robbyville; May 18, 2016 at 11:56 PM.