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10-17-2007, 02:15 PM
| | Member | | Join Date: Oct 2007
Posts: 20
| |  What's this about shutting off the rear cylinder?
Is THAT why my 08 feels like a it's running on one cylinder at low throttle settings?
__________________ John 3:16  |
10-17-2007, 03:41 PM
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The rear cylinder should not be shutting down at any RPM above idle. I have an '06 with EFI, and I encountered the shutdown for the first time at a traffic light while visiting in Fredericksburg, Va this summer. The temp on the bank sign was 107, and I had the lowers on the bike, although the vents were opened. The sensation of the shutdown was more akin to being on my 87 Heritage; lots of engine vibration, and more lope to the idle. As soon as I cracked the throttle, just before leaving the light, the motor returned to normal operation. The idle "circut" goes into shutdown mode in a high heat situation when idling the motor. The intent of the shutdown is to cool the motor by running only one cylinder (less heat than 2 running).
Rick |
10-17-2007, 09:35 PM
| | Member | | Join Date: Oct 2007
Posts: 20
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I believe mine must be shutting off all the time at idle and at low throttle settings. I'll run a compression check in the morning though. It has an even thumping idle and low speed exhaust note instead of the ka-chunk ka-chunk idle and low speed exhaust note I'm used to with Harleys. Sounds like a Honda! And it shakes worse than a solid mount Evo at idle.
__________________ John 3:16 |
10-18-2007, 12:51 AM
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Potato - potato - potato is good. Ka-chunk ka-chunk ka-chunk seems like you have some very up-set internals in your engine!  |
10-18-2007, 05:25 AM
| | Member | | Join Date: Oct 2007
Posts: 20
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Quote:
Originally Posted by dls8  Potato - potato - potato is good. Ka-chunk ka-chunk ka-chunk seems like you have some very up-set internals in your engine! | OK, potato potato, potato, is a better description, but what I have is put put put!
I don't get potato until part throttle...
__________________ John 3:16
Last edited by 52yrs_riding; 10-18-2007 at 05:27 AM.
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10-18-2007, 03:05 PM
| | Member | | Join Date: Oct 2007
Posts: 20
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I took it by another dealer and had the service manager ride it. He said it was functioning perfectly normally, and that potato potato is a thing of the past now the we have EFI. I'll sure miss it! It was one of the most endearing aspects of the Harley personality! 
__________________ John 3:16 |
10-18-2007, 05:00 PM
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My '06 FLHTI idles nothing at all like my '87 FLST. I agree, the cadence of the Big Twin is changed with the Twin Cam. Its way too sanitary for my taste, but I sure love the EFI! I do not think it sounds like a Honda, though.
Rick |
10-25-2007, 11:49 AM
|  | Senior Member | | Join Date: Sep 2007 Location: West Palm Beach, FL
Posts: 1,329
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On the 2007/08 there is a program the dealer can download that will shut off the rear jug - it is optional and can be turned on and off one time - under warranty. if you don't like - tkae it by and have them turn it off.
__________________ FREEDOM is NEVER FREE - GOD BLESS THE U.S.A. 
2007 Ultra Classic
Nothing sucks more than that moment during an argument when you realize you're wrong. |
10-25-2007, 10:38 PM
| | | doesnt that seem a little nutty
shutting off the rear cylinder? I wonder if it puts undue stress
on the engine,
even though the twin cam is extra stout, slightly compromised with ball bearing (not tapered) lower end parts
and now this, i cant help but think that they are pushing it a bit, seeing how the engines recipriocating weight is high and the engine is torquey, even at idle
wanker - who might not be the sharpest blade in the box...but has a point, no? |
10-26-2007, 06:43 AM
| | Member | | Join Date: Oct 2007 Location: Halifax,PA
Posts: 2
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Can we say EPA Ride Safe Doug | | |
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