Question about Motorcycles

1 Answer

Went From dual Air to single air intake. started running rough few months after. rejetted the carbs to stage 3. still runnin terrible. spits sputters acts like has no power when going. 2007 honda shadow spirit 750 dc

Posted by on


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert who has written 50 answers of more than 400 characters.


    An expert who has answered 200 questions.

  • Expert
  • 219 Answers

Most modern motorcycles don't like to have their air boxes changed. As they are set up at the factory to run with a particular amount of air. Changing from dual to single, you are actually reducing the amount of air to the bike not increasing it. Increasing the jets will only add to the problem, because you are allowing more fuel in to the bike. It already has a fuel issue.

Posted on Oct 23, 2013


4 Suggested Answers

  • 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

  • 56 Answers

SOURCE: 2003 honda shadow spirit vt750 carbs

It is different then most other carbs. DON"T DRILL ANY BRASS HEADS LOOKING FOR THE AIR FUEL MIXTURE. The air fuel mixture is the only adjustment you can make. It is located on the bottom side of the air intake, right behind the air filter box. It looks like a 1/4" flat metal plug. Do NOT drill this. There is no slot for a screw driver. There is a tool which is no more then a small piece of pipe that fits over this plug and you turn it in till seated, gently. Count the turns. Back out to 2 and a half turns, thats normal. Or if you no that you need more fuel injected, simply turn the screw OUT 1/4 or 1/2 turn and try it. GOOD LUCK (Its not hard)
There is no drilling to be done. Hope i didnt scew something up on mine......

Posted on Sep 03, 2009

  • 546 Answers

SOURCE: 2003 honda 750 shadow spirit wont stay running

check condition of air cleaner filter.

Posted on Sep 28, 2009

  • 496 Answers

SOURCE: 2001 Honda Shadow ACE 750 idles, but won't rev up

vac leak craked boots

Posted on Jan 05, 2010

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Hello my cpi Aragon GP 125. Model 2012 when been on a run sometimes the carb spits petrol back through the air filter.l have to disconnect the air filter to empty it, then it will start again.??

Hi, Bryan spitting is usually caused by a faulty accelerator pump and or nozzle, or the float bowl needle and seat leaking and overflowing through the main jet mixing well nozzle, or the air-fuel mixture screw is set to lean. For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
Carb spitting out petrol Pit Bike Club
125 CC carb spits fuel out intake and sputters
CPI ARAGON Service Manual
CPI Scooter Parts
CPI Aragon 125 Manual

Apr 05, 2017 | Cpi Motorcycles

1 Answer

Troybilt snowblower starts runs good for 20seconds as soon as you are in heavier snow runs rough and backfires and sputter, just put on a new carburator, still doing the same

Hi Janice,
Sorry to hear you are having problems. If this is a 2-stage snowblower, they typically have a carb box that covers them. I would try running it without this, not as a permanent fix, but just to see if the blower performs better in the heavier snow. If it does, than it may be that the carb is in need of more air and might need an adjustment. If this is a single stage snowblower, then the carb still may need an adjustment. Not all carbs are adjustable and I know you said you just got a new one, but depending on how old a unit this is, it could be the problem. If you want to provide model/serial number of the engine, i can try to find it and see what kind of carb it is using.

Mar 06, 2015 | Garden

1 Answer

Rider...stalls after running a few min.. plug

maybe need to put a full kit through carb. and replace few worn parts ie. float needle and seat. throttle needle and seat etc

Sep 06, 2013 | Garden

1 Answer

Running issues


Jul 21, 2013 | 1995 Geo Metro

1 Answer

Ive got a 06 harley 1200 sportster when it warms up it starts to cough an sputter through the carb dosent do it all the time but on ocassion it runs fine just takes spells that it does it rebuilt the

Hi David, 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

Apr 02, 2012 | 2001 Harley Davidson XL 1200 C Sportster...

3 Answers

Backfires thru carb.spits and hesitates

have you add anything or adjusted anything? spray some soapy water at the intake seals while the bike is running (idling) if the idle changes you have intake seal leak and if you have added an new air filter other than stock you may be running to lean and need to rejet

Mar 18, 2010 | 2004 Harley Davidson XL 883 Sportster

1 Answer

My 01 zx6r sputters in the upper gears. Runs like a champ in the lower 3. I have replaced air and fuel filters, checked all air intake and cleaned carbs.

purchase a can of Seafoamfrom Autozone$10 pour in 1/3 can to two gallons gas get on it right away and get it to speed a few took me 10 miles before my hesitation problem went away. did you check or replace your plugs yet? plugs are only good for about 7/8000 miles.

Oct 04, 2009 | 2001 kawasaki ZX-6R Ninja

1 Answer

Spitting and sputtering

mine did the same, I found out that the high speed jet was clogged, I pulled the fuel line off the filtor(going to the carb), stuck the line into a mixture of half gas half carb cleaner, I fanned it up and in 2 or 3 minutes it started running well, hope this helps.

May 20, 2009 | Husqvarna Lawn Tractor 48" Deck, 23 Hp,...

Not finding what you are looking for?
Motorcycles Logo

Related Topics:

76 people viewed this question

Ask a Question

Usually answered in minutes!

Top Motorcycles Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4536 Answers


Level 3 Expert

76846 Answers


Level 3 Expert

102366 Answers

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

Answer questions

Manuals & User Guides