Question about 2003 Triumph Bonneville America

1 Answer

Backfires Hey all, just as the subject heading says: My 2007 Bonneville has been running perfectly. (well except that I have to switch to reserve at 106 miles versus the 125 everyone else is getting)...I'm just hoping that its because I'm still breaking in the bike considering that I only have 1300 miles on it. Anyway, whenever I shut off my bike, I hear a single backfire. The bike is completely stock. I'm curious if this is normal or something I should be concerned about. If its of concern, what may be the possible problems and how to fix it?

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Master
  • 2,336 Answers

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.

Posted on Nov 10, 2008


1 Suggested Answer

  • 2 Answers

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

a 6ya Mechanic 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 repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Kawasaki ZZR 1400 2007 I have one bar left on my fuel how far will it take me at 30mph@

Hi, Mike so you want to know how far you can go on reserve, the answer to that question is between you and your motorcycle, how fast you are going and the overall condition of your bike.
The best way to come up with a number is to wait until you are almost on reserve have someone follow you in another vehicle with extra gas and as soon as your low fuel warning light comes on or your main fuel tank runs empty causing you to move the fuel valve to reserve pull over and zero your trip meter. Proceed to ride in the majority of places you normally drive in at your usual speed. When you run completely out of fuel check your trip meter and that mileage is how far you can travel on reserve under normal conditions.
For additional peace of mind to establish maximum MPG on reserve when you get into a sticky situation where you don't know if you can make it to the closest gas station repeat the above procedure with the following exceptions.
1. Drive in the highest gear possible at the lowest rpm without lugging the engine.
2. If you are on a flat level freeway or open road get up to 60 MPH pull in the clutch hit the kill switch shutting the engine off and coast until 20 MPH then put the kill switch to run and pop the clutch and repeat the process.
3. If there is a long downhill grade put the bike in neutral with the engine off and coast.
4. The best insurance to keep from getting stranded is:
a. Keep your bike finely tuned well maintained.
b. Always have a cell phone with you.
c. Invest in an "AAA" card.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
Hypermiling Techniques to Increase Motorcycle MPG
Kawasaki ZZR1400 ABS Service Manual
OEM Parts for Kawasaki
Kawasaki ZZR1400 Owner Manual

Oct 25, 2017 | 2007 kawasaki ZZR 1400

1 Answer

Fuel reserve switch

Look at the valve on the bottom of the tank ... should say OFF - ON - RESERVE.

May 31, 2013 | 2007 TVS Scooty PEP Plus

1 Answer

I own a 2000 honda shadow vlx 600 and am getting backfire any solutions on how to fix the problem

Backfire is a problem? I like it!

If you don't you might want to first check to make sure the exhaust headers are properly tightened to the head. Replace gaskets if needed, as exhaust leaks can cause this. Another potential cause is an over-lean pilot circuit. You might need 1 size bigger pilot jet.

Sep 06, 2012 | 2000 Honda VT 600 C Shadow

1 Answer

Bubbles in overflow tank

Hello --
well -- was the head gasket mechanically or chemically repaired? -- If cemically, you may need to go to the other side and remove/ replace the gasket..
you may need to run the vehilce to "burp" out any further gases remaiing in the coolant system, esp if it was not completely drained and had some air pocekts in there somewhere..
Best regards

Jul 15, 2012 | 2002 Pontiac Bonneville

2 Answers

Ford Focus 2005 - cold start backfire - runs great after 5 mins, when hot

White Smoke out the exhaust, is usually a sign
of coolant & most likely the start of a bad head gasket

At this point your use of the car should be curtailed,
to prevent any further damage

You should not use the car at all, until all issues are
diagnosed & resolved

Plan on using other means of transportation

Jun 21, 2012 | 2005 Ford Focus 1.6

1 Answer

My 86 suzuki intruder 700 backfires out the exhaust at idle. and makes a tapping noise. i already did a valve adjustment an new plugs

It could be the speed of one carburetor is faster than the other. This causes the backfiring as well as forces one cylinder to run lean which causes the tapping noise. You will experience an identical tapping or "ping" when you get close to empty on main fuel and need to switch to reserve. Most likely you or the previous owner unknowingly adjusted the speed of the rear carburetor down because of the high stock idle not realizing the front carburetor needs to be slowed down to match. While running simply turn the idle adjust screw clockwise on the rear carburetor until the idle smooths out and the backfiring/tapping stops.

Sep 20, 2010 | 1995 Suzuki VS 800 Intruder

1 Answer

1998 Pontiac Bonneville SLE will turns over but will not run

I would check to see if the spark plugs are fouled. Or you might have a bad ignition control module (mounted under the coil packs). Auto Zone can test the ignition control module.

May 19, 2010 | 1998 Pontiac Bonneville

1 Answer

2006 Bonneville America electrical failure

To start with, your battery was probably already low. You have to be at about 4000 rpm for the charging system to kick in and put out 14v or so. So if you just sit and idle, you will eventually run the battery down. If it is already low, you may have run it down below where there are enough amps to start it again. I know my 2002 BA started having what appears to be charging or regulating problems and the batteries won't stay charged. Try charging the battery with a good trickle charger to begin with. Then, when it is fully charged, run the bike and see if the charging system is keeping things up.

Feb 22, 2010 | 2006 Triumph Triumph Bonneville

1 Answer

Cutting out, choking, dying totally, won't start

I am no expert just a VTX owner myself.
If it is not the coil, make sure your negative ground on the battery is screwed down tight. I use a product called "seafoam" to clean my fuel system, plus it also removes carbon from the head of the pistons.
Hope this helps.

Aug 09, 2009 | 2003 Honda VTX 1300 Retro

1 Answer

Running rough and backfires

Yes tht could be the carburator since the dirt / fine rust tht settles at the bottom of the tank has found its way in to the carb.
Clean the carbs. and replace the in-line filter.
Water in gas could also be it, since water floats and you had reached the gas to reserve the water may have found its way to the carbs and thus the rough running and back firing .

May 10, 2009 | 2005 Honda VT 750 DC Shadow Spirit

Not finding what you are looking for?
2003 Triumph Bonneville America Logo

497 people viewed this question

Ask a Question

Usually answered in minutes!

Top Triumph Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4536 Answers


Level 3 Expert

77499 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers

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

Answer questions

Manuals & User Guides