Question about 2006 Honda Shadow Spirit 750

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2006 Honda Shadow Spirit 750 backfires on deceleration

I have a 2006 Shadow Spirit with 20k miles. Last summer it started backfiring on deceleration. We went to go for a ride and when we went to leave the bike kinda lunged, popped into the exhausted and died. @

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  • Honda Master
  • 60,901 Answers

Hi, Richard if your carburetor or 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 for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
backfiring popping on decel
Honda shadow exhaust leak backfiring fix
Honda VT750C2 Shadow Spirit Service Manual
https://www.partsfish.com/page/oem-parts-for-honda
Honda VT750C2 Owner Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Posted on Mar 12, 2018

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Posted on Jan 02, 2017

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Anonymous

  • 28 Answers

SOURCE: 2006 honda shadow sabre backfires

valves need to be adjusted every 6000 miles your way past due also your carbs need to be in sync together a shop has to do this work

Posted on Dec 28, 2008

Scott

  • 420 Answers

SOURCE: while riding all lights started to flash engine run erratic bike died of death bike will not start

Start with charging and load testing the battery. Then test the stator, to test the stator on the bottom of the right down tube is the plug that goes from the stator to the voltage regulator. With a multi meter, read the voltage from the stator, I forget the exact values but as you rev the motor the voltage should climb if it dosn't your stator is bad. If the stator is good take a reading again with the motor running at the battery cables, again I forget the exact value but you should have a steady reading at the battery, if it isn't and fluctuates it is bad.

Posted on May 07, 2009

ipodslinger

Steve Brown

  • 688 Answers

SOURCE: 1981 Wide Glide Bike is missing and backfiring

open up the ignition cover plate and check the backing plate. it may have come loose and threw the bike out of time.
make sure your plug wires are plugged on tight and the coil wires are secure.
It is most definitely a timing problem.

Posted on Jun 06, 2009

MakisRC51

MakisRC51

  • 408 Answers

SOURCE: i was riding my bike died oil light came on i put

Oil light does not mean that you don't have oil inside.It means that there is NO pressure in the oil circuit.You should check your oil pump and hope it did not ruin your engine from lack of oil underneath the pistons.Measure the compression too.

Posted on Jun 09, 2009

SOURCE: Honda shadow ACE 750 dies on idle after warmed up

I guess you will have to reset the air-mixture screws of the carburator/s.
Not bad if you check the condition of the spark plugs...if its ..'Whitish' means lean i.e. less gas in, Brownish...means ok, 'Blackish'...means too much gas in .....'rich'
In your bike's case you may find it 'whitish'.
Hope this helps !

Posted on Jul 19, 2009

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2005 Honda Shadow Spirit (750) hesitant and sputtering upon first spring ride. Thoughts?


Just sounds like either a jet is blocked in one of the carbs or maybe a spark plug is fouled up.tap the exhaust down pipes with your hand quickly to see which one isn't getting hot to see which ones not running.

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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.

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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.

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My 2002 750 ace keeps backfire when I rev it up


did you change the exhaust and air filter? if not, you should. bike is running rich. lean it out a little and you'll be alright.

May 04, 2010 | 2002 Honda VT 750 CD Shadow A.C.E. Deluxe

1 Answer

2002 Honda VT 750 C2 Shadow backfires on deceleration


Hi, Mmme3331 if your carburetor or 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 for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
Deceleration exhaust pop backfire
Honda shadow exhaust leak backfiring fix
Honda 1998 VT750C Service Manual
https://www.partsfish.com/page/oem-parts-for-honda
Honda VT750C Owner Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e


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My 1986 Honda shadow backfires on deceleration. How do I fix it


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.

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My 2002 ace shadow 750 has a back firering problem. The dealer that I take it to says thats just the way it is any thoughts.


If the backfiring is only on deceleration, the problem is most likely carburetors that are out of sync.

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2 Answers

Cruises fine for 30 minutes then starts to lose power and backfir


Check the fuel system, see if you have a clogged filter or sock (behind the pet-****). You can also check the plugs too. They should be around 7k OHMS. Either your loosing spark or fuel.

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