engine cutting out under acceleration

Reply Subscribe

Thread Tools

Search this Thread

Sep 11, 2012 | 09:34 AM

iceman31488

Thread Starter

Stage II

Joined: May 2011

Posts: 2

Likes: 0

From: Ore.

engine cutting out under acceleration

2007 FXSTS
Engine idles fine. But at highway speeds (under load) 55-70mph engine starts cutting out (bucking) it gets real bad if i try to accelarate to make a pass.
Just got out of the shop a week ago for the same issue ran good on receipt. now the issue is back.
Any suggestions would be greatly appreciated.

Sep 11, 2012 | 09:54 AM

tmilo1000

Tourer

Joined: Nov 2009

Posts: 392

Likes: 12

FI or carb. Sounds like the engine is starved for fuel. I would check the simple things first. Clogged or broken fuel line. Petcock broken for carb, fuel pump for FI.

Sep 11, 2012 | 10:15 AM

iceman31488

Thread Starter

Stage II

Joined: May 2011

Posts: 2

Likes: 0

From: Ore.

Fuel injected

Sep 11, 2012 | 10:19 AM

sucherman

Club Member

Joined: Mar 2010

Posts: 4,806

Likes: 12

From: In a house down by the river

Had a similar situation on my '06 Deuce, turned out it was a pinhole leak in the fuel line.

Sep 11, 2012 | 10:20 AM

Gman in NC

Road Warrior

Joined: Sep 2009

Posts: 1,257

Likes: 2

From: Gastonia, NC

There were issues with 2007s and the fuel lines inside the tank. They would rub, get a hole, then starve for fuel, especially when the fuel level gets below the hole. Not an expensive fix.

Sep 11, 2012 | 02:50 PM

oct1949

Club Member

Joined: May 2007

Posts: 145,895

Likes: 821

From: 40 miles Northeast of Indy..

Quote:

Originally Posted by Gman in NC

There were issues with 2007s and the fuel lines inside the tank. They would rub, get a hole, then starve for fuel, especially when the fuel level gets below the hole. Not an expensive fix.

And the )04's. 05's, 06's, 07's and 08's... have the same issue.

Lots of owners with different yr bikes are having same problem. Most are saying the Ethanol is causing the fuel line hose to go soft and the pressure from the fuel pump makes ahole in the like causing the miss issues.

For the OP, the best way to check to see if this is the problem is to fill U tank..

If the problem goes away but returns as Ur fuel level goes down, then it the pinhole in the lines.. Mine start missing about 90 miles after filling up the tank.

Others have reported more miles and some with less before it started missing out.

U need to replace fuel lines in tank and probably might as well put in a new filter also..

its about a 2 - 2 1/2 hr job...

I was away from home on vacation last yr when mine did it. Had to have dealer do it..no tools... total cost +labor was $335.. for everything new..

Also U can check to see if she throwing any codes.. that will also tell Ya.

.

Sep 11, 2012 | 04:22 PM

Warp Factor

Outstanding HDF Member

Joined: Aug 2012

Posts: 3,217

Likes: 90

From: Detroit

Quote:

Originally Posted by oct1949

Most are saying the Ethanol is causing the fuel line hose to go soft and the pressure from the fuel pump makes ahole in the like causing the miss issues.

I guess ethanol is the latest "boogeyman"?
Fuel system components have been designed with 10% ethanol in mind for at least ten years. Going a step further, people switch over to 85% ethanol (E-85, because it's like race gas) with no fuel system degrading problems.