Question about 2003 Yamaha XJ 900 S Diversion

1 Answer

Backfiring and seems to be struggling getting fuel

My Diversion started to backfire this morning, and on the way to work struggled as if not getting the fuel through, then it would suddenly lurch forward as if the fuel had got through okay. When puttng choke on it was as if I hadn't it didn't rev up. Was fine the day before.

Posted by on

  • hawkeruk Feb 16, 2009

    thanks, bike runs okay in one sense, covered 25 miles, backfiring on the way, but not all the time. Bike has been off the road since early december, although I do start it and let it run. I can't get to a bike shop till tomorrow.

  • hawkeruk Feb 17, 2009

    Problem isolated, turns out the ECU is knackered, bike in the bike shop waiting a part.


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 147 Answers

Check to make sure your plugs arent fouled. the last bike i had did that to me, fine in the morning and when i went to leave for work in the afternoon the bike ran like **** for a few seconds and shut off. i took the bike back to where i bought it and they replaced the plugs. ran fine after that.

Posted on Feb 16, 2009

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 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.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Backfires at idle (sometimes) but seems through air intake not exhaust ? Bike struggles to start without choke when warm ??

A bike that backfires through the carb has ignition timing that is too far advanced. This will also cause bad starting. Get the timing fixed.

Nov 14, 2015 | Motorcycles

1 Answer

Bike is turning over with new battery but struggling to fire up and is backfiring

check spark plugs if they are black sooty or oily replace them

Mar 15, 2015 | Motorcycles

1 Answer

Bajaj pulsar 180 dtsi backfiring while starting? why? and missing after starting.

check first if all cylinders spark plugs are firing, seem like you are missing on one cylinder. this will cause as well backfiring.

if this is not the case then:

backfiring can be caused by too rich fuel mix or by wrongly set advance. there is unburnt fuel present in exorst and this cause backfire. these two are most "popular" causes of the backfiring.

hope this will help you solve the problem, do not forget to vote...

Mar 10, 2015 | Bajaj Pulsar 180 Motorcycles

1 Answer

87 kawasaki ex500 backfiring not starting

There are many things that can make the engine to backfire.
(1) Water in fuel.
(2) Ignition timing, if it's out.
(3) Fuel level in the float chamber of the carb being too low.
What exactly did you do to it..or did it just started to backfire...was the bike stored for a long time?

Apr 30, 2013 | Motorcycles

1 Answer

My 97 road king flhr sometimes I will backfire through the air filter I think it maybe struggling to get air because iof need toto clean the airfiltetfirst and that's why it happens is there anything...

Hi Adam, popping, coughing, spitting, or backfiring through the carburator or induction module can be caused by air getting sucked in combustion chamber do bad intake seals leaking. Leaking exhaust gaskets can also be suspect. Remove air cleaner and backing plate, while engine is idling spray WD-40 or Brake Kleen around intake manifold to head area, if RPM's increase you have an intake leak and seals need to be replaced, also spark plugs will be burning whiter than normal. Good luck and have nice day.

May 26, 2012 | 2000 Harley Davidson FLHR-FLHRI Road king

1 Answer

Motorbikes backfires, and is irratic with accelration.

Nice bike and an annoying issue. Backfire is unburnt fuel that then detonates.

Hopefully, it's just a plug going bad. Pull the plugs and see which one is black/wet. That will be the tell tale sign which cylinder is acting up.

I'd replace all, set the proper gap and install them and take it for a test drive.

Good luck hope this is a simple fix.

Oct 05, 2009 | 2000 Triumph Trophy 900

2 Answers

Backfiring, flames coming out of exhaust and cutting out

Sounds to be a timing problem or burnt exhaust valve.. A compression test will tell the story.

Jun 02, 2009 | 2000 Suzuki VL 250 Intruder LC

1 Answer

Spluttering/backfires on low throttle opening/struggles to build

yes clean carbs, use Berrymans B12 fuel additive in the gas, double dose run til hot, then put it away overnight. try next day. also change fuel filter if it's been standing all winter long.

you can try spray in carb cleaner too, remove aircleaner, raise slider in carb with finger or something and spray a bunch in there, let it sit overnight to get to work and try next day

also if fuel is old then get fresh

Apr 04, 2009 | Yamaha XV 535 Virago DX Motorcycles

1 Answer

It is backfiring and when it idles it will cut off

sounds like a air leak to me , spray some wd40 gt85 etc on the manifold ( where the carb goes to the cylinders if the bike revs up high or struggles really bad then dies out you will need to replace the intake seals , easy job to do and the seals only cost a couple of quid while your in there changing the seals it would also be a ideal time to make sure your mixture settings are correct on the carb .
hope this is helpfull to you, any other questions just ask
kind regards

Mar 18, 2009 | 2005 Buell Blast

3 Answers

Yamaha Diversion 900 backfiring

carbs need stripping and cleaning then balancing. this should sort it.

Feb 16, 2009 | 2000 Triumph Trophy 900

Not finding what you are looking for?
2003 Yamaha XJ 900 S Diversion Logo

Related Topics:

312 people viewed this question

Ask a Question

Usually answered in minutes!

Top Yamaha Experts


Level 2 Expert

61 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1128 Answers

D. E. Hev

Level 3 Expert

1132 Answers

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

Answer questions

Manuals & User Guides