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Honda foreman 500 backfires deceleration - Motorcycles

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: My 1986 Honda shadow backfires on deceleration.

I replaced spark plugs, filters, tightened boots, etc. Nothing worked. Then I dumped Sea Foam in the gas tank. 50 miles later...no more backfiring. I used 1 ounce per gallon. Get it at any auto parts store.

Posted on Oct 30, 2009

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miket756
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SOURCE: honda xbr 500 carb backfire

it could have a burnt out inlet velve or it may be the velve clearence is to tight check velve clearence first

Posted on Mar 17, 2010

  • 635 Answers

SOURCE: backfiring on deceleration from exhaust pipes

May be running too lean or too rich. Check the color of your plugs, black dry and sooty means they are rich, white with blisters lean.

Posted on Apr 03, 2010

  • 3 Answers

SOURCE: I have a 2002 Honda ACE deluxe 750 that backfires

Probably the idle jets are set too lean. From what I have read, the factory settings are often wrong. Drill out the plugs and adjust. If you use the right size drill you can get in with a small screwdriver and make the adjustments without totally removing the plug. This eliminates the possibility of losing the adjustment screw, which can happen if the plugs are not there.

Best thing to do is put in a Cobra stage 1 jet kit. You will be amazed at how much better the bike runs.

Posted on May 12, 2010

sisadsl
  • 1508 Answers

SOURCE: backfireing when decelerating

it can be caused by a number of things including.
lean mixture--air leak intake or exhaust,
leak in exhaust gasket
low ignition voltage- bad plug,lead\resister cap
tight valve clearance
and a number of less likely problems like faulty kill switch, ignition switch\cable connecter,igniter.
If it is not the standard exhaust, the jetting may need a slight change

So first give it a tune and service, check valve clearances,new aircleaner, drain carbs, tighten exhaust bolts and clamps, intake clamps and bolts,it may need exhaust gaskets

Posted on Jul 08, 2010

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1 Answer

04 honda 500 rubicon starts good and sounds smooth at idle but boggs down when you push throttle. new gas, cleaned carb. replaced parts carb. kit also chekd TCS any ideas need help thanks R.H.


Hi, Anonymous and the usual suspects are:
1. Throttle cables misaligned or misrouted.
2. Damaged or restricted fuel tank venting system.
3. Inlet system air leak.
4. Vacuum piston malfunction.
5. Accelerator pump leaking or no output.
6. Plugged bowl vent.
7. Fuel level in bowl too low.
8. Restricted fuel supply passages.
9. Plugged jets or passages.
10. Worn or damaged needle or needle jet.
12. The enricher valve not seated or leaking.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
http://www.hondaforeman.com/128-foreman-450/74303-carb-driving-me-crazy.html
http://www.hondaforeman.com/149-honda-recon/69272-2005-recon-will-not-accelerate.html
Honda 450 Foreman backfiring no power but idles fine
Bogging out when give my four wheeler gas
http://www.hondampe.com.au/docs/owning_a_honda/owners_manuals/motorcycles/TRX500FA-FOURTRAX%20FOREMAN%20RUBICON-2003.pdf
http://ng-products.com/nic/honda/2007%20Honda%20Foreman%20Rubicon%20Service%20Manual.pdf

Apr 20, 2016 | Honda Motorcycles

1 Answer

Why is my atv Honda fourtrax 350 backfireing


it sounds like its starving for fuel, when it runs lean you will get backfires and if its running rough then it may be starving for fuel at idle. Try adjusting you mixture screw and see it the engine will smoot out. Your carb my be dirty and not allowing enough fuel through it.

Feb 21, 2015 | Honda Motorcycles

1 Answer

Honda shodow vlx 600 backfiring on deceleration


Hi, Anonymous if your carburetor/exhaust is:
COUGHING is usually caused by an air leak in the intake system and will generally have the same telltale signs, a wet or damp build up of oil/gas seepage at the intake manifold to cylinder head or carburetor to intake manifold connection and in rare instances a worn throttle plate shaft and or seals.
POPPING on deceleration is usually caused by a lean fuel condition or an air leak in the exhaust system and is generally located where black carbon soot is seen as a flashing build up from any joint connection. This condition can easily be remedied by removing and cleaning both joint pieces and reassembling with high temp silicone and torquing the exhaust clamp to the proper spec.
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 adjusted too lean.
BACKFIRING is usually caused by a sticky/tight intake valve or a timing issue, 180 degrees out or cam chain off 1or 2 teeth.
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.
Backfiring
Honda shadow exhaust leak backfiring fix
http://www.vt600vlx.com/VLX%20VT600%2097%20and%20up%20Service%20Manual.pdf
http://www.partsfish.com/page/oem-parts-for-honda
Honda VT600C Owner Manual

Jan 08, 2013 | 1997 Honda VT 600 C Shadow

1 Answer

My 1999 honda shdow aero backfires on de acceleration.ihave changed plugs,coils &wires.


Backfiring on deceleration is air getting into the exhaust and igniting unburned fuel. You probably have an after market exhaust on. You need to seal up the exhaust system by replacing all the exhaust gaskets. Dig the copper crush washers out of the head and replace them with new copper crush washers. This should take care of most of the popping. If the problem persists,unbolt the fuel cut diaphragms from the side of the carburetors and inspect them for holes and stickiness. Replace the fuel cut diaphragms if they are bad . Fuel cut diaphragms are on almost all Honda Kei Hin carburetors to stop the cycles from popping or backfiring on deceleration With the stock exhaust.

May 10, 2011 | 1999 Honda VT 1100 C3 Shadow Aero

1 Answer

My 1999 Honda shadow backfires on deceleration after steady throttle what could cause this? I have tuned it and cleaned the carb but it still does it.


The most common reason for backfiring is lack of back pressure from changing the exhaust. To compensate for the flat spot you get you put in a jet kit. This leaves the possibility of more unburned gas getting into the exhaust. Honda uses Kei Hin carbs with a fuel shut off diaphragm to help limit this condition (backfiring) by turning off the fuel to the carbs during deceleration. Even stock exhaust can pop or backfire. Typically it is caused by air getting into the exhaust either past the copper o-ring gaskets in the head or leaking muffler connections from the head pipes to the mufflers. Try replacing all the exhaust gaskets and you should minimize this condition.

Sep 05, 2010 | 1999 Honda VT 750 CD Shadow A.C.E. Deluxe

1 Answer

Is popping or backfire normal?


Two things can cause popping or backfiring on deceleration. The most common is air leaking into the exhaust through the exhaust pipe copper o-ring gaskets. This typically happens when the exhaust is replaced without removing the old ones (doubled up) or simply reusing the old gaskets and they don't seal. The other thing that can cause popping is bad air cut diaphragms on the carburetors. If they are old and sticky or have holes in them they don't properly shut off the gas on deceleration causing the backfire.

May 06, 2010 | 2002 Honda VT 750 CD Shadow A.C.E. Deluxe

1 Answer

Backfiring on deceleration from exhaust pipes


May be running too lean or too rich. Check the color of your plugs, black dry and sooty means they are rich, white with blisters lean.

Apr 03, 2010 | 2005 Honda VTX 1300 R

2 Answers

Load Clanking In My 2006 Honda Foreman 500


You need to a just your liffters

Apr 07, 2009 | 1994 Honda Accord

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