P1356 code on ultra

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Dec 30, 2011 | 06:55 PM

Lgossett

Thread Starter

6th Gear

Joined: Dec 2011

Posts: 11

Likes: 0

From: Winston Salem, NC

P1356 code on ultra

Help. I have a p1356 code on my bike. "Rear cylinder no combustion". Problem started with skip. Have removed throttle body, cleaned and replaced injector, plug and wire. What else is there. Symptoms are backfire, when adding throttle severe loss of power and will smoothe out when I let off. I
t is so bad I cant ride. Any advise?

Dec 30, 2011 | 08:20 PM

kojak

Seasoned HDF Member

Joined: Jan 2007

Posts: 5,534

Likes: 3,938

From: Virginia

Its an electrical problem. Could be bad wire, loose connection on the primary side of the ignition coil.

Dec 30, 2011 | 08:33 PM

Lgossett

Thread Starter

6th Gear

Joined: Dec 2011

Posts: 11

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From: Winston Salem, NC

Thanks kojack I have done everything but replace the coil. I will recheck connections. Maybe it is the coil itself. I have my doubts but that's the reason I am asking.

Dec 30, 2011 | 08:44 PM

AlanStansbery

Road Warrior

Joined: Oct 2008

Posts: 1,334

Likes: 17

From: Rosamond, Cali

For what it's worth, I had the same code today (except for the front cylinder) when I was running out of gas and the engine was starving for gas. It doesn't sound like fuel's your issue. But thought I'd mention it. (Evidently, the code is derived from the ion-sensor data that also detects 'knock').

Alan

Dec 30, 2011 | 09:05 PM

ArizonaHarleyRider

Advanced

Joined: Aug 2011

Posts: 53

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From: La Porte, Tx

Believe it or not, If you search through here you will also find its very common for the fuel line inside the tank to get a hole in it then unable to pressurize the system. Happened to my bro's bike, 07 UC. The backfire symptom as well as unable to run into higher RPS often times as it progresses it wont even idle, just backfire cough and die. Food for Thought, Good Luck...

Dec 30, 2011 | 09:19 PM

blusmbl

Road Warrior

Joined: Aug 2010

Posts: 1,268

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From: Detroit, the asshole of America

Quote:

Originally Posted by ArizonaHarleyRider

That's my first guess, too.

Dec 30, 2011 | 10:33 PM

Lowcountry Joe

Elite HDF Member

Joined: Sep 2007

Posts: 4,928

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From: Near Myrtle Beach, SC

Have you any engine mods or are you stock?

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Dec 31, 2011 | 04:11 AM

LQQK_OUT

Seasoned HDF Member

Joined: Nov 2006

Posts: 5,878

Likes: 1,893

From: East Coast, USA

Quote:

Originally Posted by blusmbl

That's my first guess, too.

+1
Had the same issue on my 04 UC. Fuel line in my gas tank developed a couple of small holes. If you search the forums, there are other people that have had this issue. That's how I was able to figure it out. You might want to replace your fuel filter while you're in there.

Here's a picture of the problem

https://www.hdforums.com/forum/dyna-...fuel-line.html

I had to replace the hose from the fuel pressure regulator to the supply fitting/check valve.
62228-03 check valve. fitting assembly w/o-ring & flex tubing
On my bike the flex tubing on this assembly is what had the holes from rubbing against the inside of the fuel tank. When I replaced the assembly, I cut off the old flex tubing and cut it open and wrapped it around the newly installed flex tubing to provide a sort of shield against future rubbing.

Last edited by LQQK_OUT; Dec 31, 2011 at 04:16 AM.