Question about Harley Davidson FLSTF Fat boy Motorcycles

1 Answer

My bike is throwing a fit.. It is running good when I first take off.. But after about 15 miles, it starts backfiring and shutting down. After about 20 miles...anytime I come to a stop and disengage the clutch it shuts off. Can you help me? This is a 2007 Harley Fatboy.

Posted by on

  • kendog_thund Aug 09, 2010

    this bike is a 2007, it's fuel injected

×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 4,565 Answers

If it's a carburated engine, check the vacuum operated petcock for full fuel flow. These things are notorious for giving problems. I've replaced mine with a high quality manual operated petcock. Pingle is a good one but pricey.

Remove both hoses, the large one and small one. You'll need a hand operated vacuum pump to apply vacuum to the backside of the petcock. Apply the vacuum and look for full fuel flow from the petcock.

It could also be a bad fuel cap. The vent could be allowing a vacuum to build in the tank as the engine uses the fuel and slowing down the fuel flow. Loosen, but take the cap completely off or you'll be wearing a couple of dollars worth of gasoline, the cap and ride for ways to see if this helps.

Good luck
Steve

Posted on Aug 06, 2010

  • wd4ity
    wd4ity Aug 09, 2010

    Did you try the loosen the fuel cap trick? You'd be surprised at how many times this is the problem. A bad fuel cap vent.



    Otherwise, I have no idea what the problem could be. It seems as soon as the engine comes to full temp, the problem starts. It could be a bad engine temp sensor but I'm not sure since I have no diagnostic skills on the late model bikes. Even if I did, I'd have to hook the machines up to it to read the codes or whatever. Sounds like you might need to take it to the dealer. Sorry I couldn't help more.

×

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

1999 sportster 1200c after good warm up ride, 15 miles or so bike shuts off under full throttle twist


it sounds like your fuel filter is ready fr a change and that your main jet might be blocked or needle and seat might need checking cheers

Mar 12, 2014 | Harley Davidson XL 1200 C Sportster Custom...

1 Answer

Bike leaves me stranded after 15 mins


Check your ignition coils. Sometimes they fail with an open circuit, this can sometimes close up when the machine is cold and open again when it heats up. So. it will start when cold and fail when it warms up.

Apr 24, 2013 | 1982 Yamaha XJ 650

2 Answers

My lt 1000 17.5 hp riding mower will backfire once in awhile when starting but runs fine once it starts. why


first smell the oil is there a gas smell to it?the needle valve maybe dripping fuel and over flowing into the intake

Apr 18, 2012 | Craftsman Garden

1 Answer

I have a 99 road king with a 95 CI new engine. Yesterday after riding for about 80 miles, the bike stopped running. I left from a signal, shifted into 2nd and the engine backfired and shut off. After...


It sounds like a fuel flow restriction somewhere. Sure, it'll start every time and idle for a while but take it down the road a bit. If it quits, I'd suspect that for some reason it's not getting fuel to the engine from the tank. Loosen the fuel cap, the cap vent may be bad. The vented cap the right side tank cap. If it's fuel injected, it could be the fuel pump or something. It sounds like a fuel problem to me.

Good Luck
Steve

Jan 16, 2011 | Harley Davidson FLHR-FLHRI Road king...

1 Answer

My 2005 Yamaha v star 1100 classic had after market Cobra pipes on it when I bought it. I took it in to have it tuned up because of a lot of backfire while in operation. They said the carb kit was in...


I do not agree your bike should run better then it sounds like it is. Just throwing on a set of pipes and a carb kit is not always all that needs done. I ask about the air filter because it seems your motor is getting to much gas and not enough air. The thing I would do next is to get a higher flow of air on the intake side by going to a high flow air filter. A quick check to see if this will help is to temporarily remove the air filter and test ride the bike. If it runs better without the filter this tells you a high flow filter will help. Your bike may need more work than this to get it right on. The other thing you could have done is get someone to jet in the carb to cut down the fuel flow and get the fuel air ratio right on.

Sep 13, 2010 | 2005 Yamaha V Star 1100 Classic

2 Answers

1987 kawasaki ninja zx10 wont stay running when warmed up it


you didnt mention anything to do with the carbs so try some "Sea foam".... purchase at Autozone ($10) pour 1/3 can to two gallons fuel and drive it around for a good 10 to 15 miles and get on it once in awhile, ride safe..if the carbs are dirty or clogged... they wont be after your ride..there might be a little hesitation your first couple of miles till it starts to work..it took my bike 10 miles before it cleared out..bump start your bike if you have to to get it going and keep it going till it clears up.

Apr 08, 2010 | 1989 kawasaki ZX 10

1 Answer

DAFIER RIDER 50QT-6 OR YLYING YY50QT-6 Been in the garage numerous times. New parts fitted but same problem. Rides well for a few miles than stops. Will run again after cooled down, but stopped 9 times in...


What new parts were fitted? Were there the same issues before the parts were fitted? There may be a compression isssue due to a poorly fitted part. This will become evident as the bike becomes warm and parts start to expand with heat.

Nov 01, 2009 | 2004 Factory bike Chrono SM 250

2 Answers

Car won't start, wait 15 min. will start but kinda backfires.


possible ignition coil pack breaking down...unit cools off them fires plugs again...fuel pressure is a concern also ..possible failing fuel pump

Jun 25, 2009 | 1995 Chevrolet Caprice Classic

1 Answer

Backfires


My '06 Bonneville America also often emits a single, very quiet backfire right after I turn it off. It doesn't do it every time, but approximately half the time. As with yours it runs beautifully and, therefore, hasn't been of concern.

Nov 10, 2008 | 2003 Triumph Bonneville America

Not finding what you are looking for?
Motorcycles Logo

Related Topics:

242 people viewed this question

Ask a Question

Usually answered in minutes!

Top Harley Davidson Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4521 Answers

Mike

Level 3 Expert

4340 Answers

yadayada
yadayada

Level 3 Expert

76132 Answers

Are you a Harley Davidson Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...