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2004 Yamaha RX Warrior sled backfires when letting off throttle,WHY?

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  • Yamaha Master
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It sounds like a timing problem.

Posted on Dec 10, 2014

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Posted on Jan 02, 2017

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1 Answer

Why does my 2006 yz250f backfire when I let off the throttle?


Hi, Anonymous popping or backfiring 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. Coughing is usually caused by an air leak in the intake system and will generally have the same telltale signs, a wet or damp buildup 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. 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. 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.
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Aug 19, 2013 | 2004 Yamaha YZ 250 F

1 Answer

2001 yamaha snowmoble 500 venture with twin mukuni carbs recently cleaned wont idle need throttle and choke to start,starts ok,no throttle,sled stalls out.


may need a rebuild on carb or jet ajust--secure a repair manual for procedures--pro advice is often needed for carbs cause if done rong u cud fry engine

Feb 26, 2013 | Motorcycles

1 Answer

1995 yamaha vmax 600 backfires wont start


if it is backfirering sound like timing is out of spects

Feb 16, 2013 | Cars & Trucks

1 Answer

Yamaha warrior backfire thru carb


Hi, Anonymous and the usual suspects are:
1. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a "LOAD" test "WARNING" you can have 12.5 volts or better but little or zero amps and the battery must be replaced.
2. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
3. Faulty main circuit breaker and or connections.
4. Faulty ignition coil and or connections.
5. Faulty spark plug, oil or gas fouled, wrong heat range or service type, wrong gap, loose in the cylinder head, broken electrode or insulator.
6. Faulty spark plug cables, leaking or broken, internal damage check for spark leakage in the dark.
7. Faulty ignition module, switch, CKP, MAP, CMP, sensor and or any connector in the ignition circuit could have corroded, loose, or broken pins/sockets
8. Burnt exhaust valve or air leak in the exhaust system.
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.
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Apr 04, 2012 | 2002 Yamaha Road Star Warrior

1 Answer

My warrior keeps cutting out sometimes backfiring.i put octaine booster in clears up a little bit soon as gas up gets bad again.changed plugs run premiem gas still cutting out spitting and ...


Hi, Jamesw302002 and the usual suspects are:
1. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a "LOAD" test "WARNING" you can have 12.5 volts or better but little or zero amps and the battery must be replaced.
2. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
3. Faulty main circuit breaker and or connections.
4. Faulty ignition coil and or connections.
5. Faulty spark plug, oil or gas fouled, wrong heat range or service type, wrong gap, loose in the cylinder head, broken electrode or insulator.
6. Faulty spark plug cables, leaking or broken, internal damage check for spark leakage in the dark.
7. Faulty ignition module, switch, CKP, MAP, CMP, sensor and or any connector in the ignition circuit could have corroded, loose, or broken pins/sockets
8. Burnt exhaust valve or air leak in the exhaust system.
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.
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Yamaha XV1700PCRC Service Manual
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Feb 28, 2012 | 2003 Yamaha Road Star Warrior

1 Answer

1992 Yamaha Warrior 350 sound when letting of throttle!??


Check spark plug, that sounds like it's running little too lean.

May 30, 2017 | Yamaha 2004 Warrior Base

1 Answer

2004 Yamaha Road Star Warrior tachometer is blinking


Hi, Aj_burns1 for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere zero $0 you can download another one. 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.
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Feb 19, 2011 | 2004 Yamaha Road Star Warrior

6 Answers

Yamaha warrior atv [yfm 350] bogging problem


Try checking the switch for your parking brake. It is the top wire in the clutch handle boot. This wire connects to your CDI box, and restricts the RPM's while the parking brake is engauged. To find out for sure, trace the wire down to the plug under the headlight assembly and disconnect it. Now try starting you machine and give it some throttle!

Apr 18, 2009 | 2002 Yamaha Road Star Warrior

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