2004 flstc efi spitting and sputtering

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Feb 26, 2015 | 06:27 PM

Mcgsxr1983

Thread Starter

Stage I

Joined: Feb 2015

Posts: 1

Likes: 0

From: Orlando fl

2004 flstc efi spitting and sputtering

Hey guys new here and hopeing I can get some advice on where I need to be looking. I have a 2004 heritage softial Classic EFI that is throwing a p0505 code but myself or the dealer can't seem to locate the problem! Here's the rundown- idle sounds descent with a sputter every minute or so, (no engine light at idle) while riding at any steady RPM (the problem is not consistent) the bike will spit and sputter every 30sec or so I can hear it spitting in the throttle body and can feel it in the bike almost like a dead miss on both cylinders for a split second. As for the unsuccessful: replaced IAC, plugs, wires, ign coil, checked for vacuum leaks, injectors, battery voltage is good, oil in crank case is proper, it's got good gas. I'm not sure if the idle is at correct rpm, (I don't have a tac and Harley didn't mention is was right or not) not sure of the vss, (speedo shows 1mph weather bike is off without power or running) if anyone has had a similar problem or has any suggestions please let me know.

Thanks in advance

Feb 26, 2015 | 07:02 PM

Village Idiot™

Stellar HDF Member

Joined: Aug 2011

Posts: 3,158

Likes: 68

From: Martinsburg, WV

Did you try the plastic tube in the gas tank? They develop small holes in them. It's a pretty common problem and one that myself and many others on here have dealt with.

Feb 26, 2015 | 08:13 PM

IrIeSpringer420

Tourer

Joined: Oct 2013

Posts: 379

Likes: 1

From: I Forgot

what mods you running on your ride? air cleaner, pipes? how many miles on the bike? how did plugs look when you replaced them? lean/rich looking?

Last edited by IrIeSpringer420; Feb 26, 2015 at 08:17 PM.

Feb 27, 2015 | 04:18 AM

Rodzilla6

Road Warrior

Joined: May 2010

Posts: 1,593

Likes: 11

From: Mass/NH

Quote:

Originally Posted by Village Idiot™

Did you try the plastic tube in the gas tank? They develop small holes in them. It's a pretty common problem and one that myself and many others on here have dealt with.

This might be it, fairly common...easy test for it, fill the fuel tank up and run it...if it still splitters, etc., probably not the in tank fuel line. If there is a pin hole, when you fill the tank it covers the hole with fuel so it is not sucking air...
Try it...hope it works. If that is it, it a pain but not hard to fix...or expensive...
Ps if you go into the tank, change the fuel filter also...they get real nasty...

Last edited by Rodzilla6; Feb 27, 2015 at 04:22 AM.

Feb 27, 2015 | 02:54 PM

mkenkel

Cruiser

Joined: Apr 2014

Posts: 154

Likes: 0

From: senatobia ms

I bought a used 04 efi heritage that did the same thing. the previous owner had installed v&h longshots and se breather but there was not a tuner on the bike. I guess he removed whatever he had on it when he traded it in. I put a fuelpac on it and set it up with the map provided by v&h and it has run like a top ever since. hope this helps,good luck.

Feb 27, 2015 | 08:32 PM

Warp Factor

Outstanding HDF Member

Joined: Aug 2012

Posts: 3,217

Likes: 90

From: Detroit

Are the battery terminals tight?
They can work loose, and it's a pretty common cause of symptoms like that.

Feb 27, 2015 | 08:56 PM

BigMike

Club Member

Joined: Jan 2007

Posts: 3,559

Likes: 1,936

From: NE Florida

Quote:

Originally Posted by Village Idiot™

Did you try the plastic tube in the gas tank? They develop small holes in them. It's a pretty common problem and one that myself and many others on here have dealt with.

I had this issue on my 02 Road King. If the bike runs fine with a full tank but has the issue when the fuel is less than fuel, this is most likely the problem.