20 Most Recent 2005 Honda CRF 450 R Questions & Answers


Hi, Tracey for this scenario you will need your service manual that has all fastener torque specs and a wiring diagram on the back pages, parts fiche, and owners manual if you can't find the best tool you ever bought for your Honda, 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 for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
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2005 Honda CRF... | Answered on Aug 22, 2019


Hi, Dwayne and the usual suspects are:
1. Faulty ignition coil.
2. Faulty spark plug cables.
3. Faulty temperature sensor.
4. HISS light not going off.
5. Faulty starter motor.
6. Valves adjusted too tight.
7. Spark plug gap too wide.
8. The fuel line has a vapor lock.
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.
http://dirtrider.net/forums3/threads/crf450r-cutting-out-why.168902
https://thumpertalk.com/forums/topic/1104096-2014-crf450-cutting-out-when-warm
Honda CRF450X 2005 Service Manual
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2005 Honda CRF... | Answered on Jul 02, 2019


Hi, Dylan for this scenario you will need your service manual that has all fastener torque specs and a wiring diagram on the back pages, parts fiche, and owners manual if you can't find the best tool you ever bought for your Honda, 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 for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
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2005 Honda CRF... | Answered on Jul 18, 2018


Hi, Vic for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Honda, 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 for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
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2005 Honda CRF... | Answered on Dec 02, 2017


Check the water pump impeller .. the sound may have been the overflow... check your compression..just to be on the safe side..

2005 Honda CRF... | Answered on Jul 17, 2017


Hi, Jimbobscott for this scenario you will need your service/owners manual if you can't find the best tool you ever bought for your Honda, 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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2005 Honda CRF... | Answered on Jun 28, 2017


Hi, Haselhuj you need to make sure you have no intake leaks by spraying some Brake Kleen, Contact Cleaner, Starting Fluid etc. around the intake manifold and seals, if the RPM's go up or down significantly then you have a leak that needs to be fixed before you can continue with the carburetor adjustment.
The engine should be at operating temperature with the enrichener off to set the idle between 950-1050 rpm. Turn the idle skrew clockwise to increase the idle speed and counterclockwise to decrease the idle speed. If you have access to your air fuel mixture skrew you may turn it as well, if not there is a video below on how to gain access, make sure you start with clean or new spark plugs. Gently turn the air fuel mixture skrew clockwise until it starts to bottom out "STOP" do not over tighten as it will damage the taper on the end, now back the skrew out 1-1/2 full turns to establish a starting point start the engine and check the idle rpm's and turn the idle skrew accordingly for 950-1050 rpm if necessary, turn the air fuel mixture skrew 1/4 turn at a time and let the engine settle for about 10 seconds, turn the skrew clockwise for a leaner mixture and counterclockwise for a richer mixture, you are seeking the highest rpm your air fuel mixture skrew can acquire without going past 3 full turns from bottom then resetting the idle skrew back down to 950-1050 rpm If you can not detect any rpm change and can not stall the engine by turning the air-fuel mixture skrew all the way in then your pilot/low-speed jet is too big and needs to be replaced with the next size smaller. Final adjustment should be made with a clean air filter mounted to the carburetor.
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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Honda CRF450X 2005 Service Manual
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Honda CRF450R Owner Manual

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2005 Honda CRF... | Answered on Jun 27, 2017


Hi, Zach for this scenario you will need your service/owners manual if you can't find the best tool you ever bought for your Honda, 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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2005 Honda CRF... | Answered on Jun 27, 2017


Hi, Brian for this scenario you will need your service/owners manual if you can't find the best tool you ever bought for your Honda, 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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2005 Honda CRF... | Answered on Jun 27, 2017


Hi, Anonymous and the usual suspects are:
1. Fuel boiling in fuel line due to extremely high outside temperatures and unprotected fuel lines missing convoluted tubing cover routed too close to cylinders and or heads.
2. The gas cap is not venting properly.
3. Fuel tank vent line blocked, plugged, kinked, or smashed.
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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Honda CRF450X 2005 Service Manual
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2005 Honda CRF... | Answered on Jun 26, 2017


Hi, Dain and the usual suspects are:
1. Severely discharged or a damaged battery must have 12.5 volts or more and be able to pass a proper "LOAD" test if necessary, you may have a preliminary reading of 12.5 volts or more but little or zero amperage the battery is faulty and must be replaced, AGM batteries fail in this scenario more so than lead acid batteries.
2. Faulty alternator/generator and or voltage regulator.
3. Loose or corroded battery terminals and or cables especially the "NEGATIVE" cable, look for loose, corroded, or broken connectors inside the cable harness at "BOTH" ends.
4. Faulty main circuit breaker or ignition switch, check for loose connections and continuity.
5. Faulty system and or ignition relay, check for continuity.
6. Faulty ignition coil, ignition/electronic module.
7. Faulty CKP, CPS, CMP, MAP, TPS, or BAS sensor, corroded, loose or broken wire connector pins/sockets.
8. Throttle cables and or idle speed improperly adjusted hot idle speed should be 950 RPM to 1000 RPM.
9. Faulty neutral, side stand or clutch lever safety switch.
10. Fuel tank empty
11. Fuel tank contaminated with ethanol sludge.
12. Water or dirt in the fuel system, or clogged filter.
13. Restricted, blocked or kinked fuel line.
14. Faulty fuel pump.
15. Faulty pressure regulator.
16. Faulty or clogged fuel injectors.
17. Lean angle switch is faulty or needs adjustment.
For more information about your issue and valuable "FREE" downloads that you need please click on the blue links below. Good luck and have a wonderful day.
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2005 Honda CRF... | Answered on Jun 26, 2017


Hi, Anonymous for this scenario you will need your service/owners manual if you can't find the best tool you ever bought for your Honda, 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.
Clutch Oil Fluid Level
Honda CRF450 Transmission side oil change
Honda CRF450X 2005 Service Manual
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Honda CRF450R Owner Manual

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2005 Honda CRF... | Answered on Jun 26, 2017


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 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.
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.
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2005 Honda CRF... | Answered on Jun 26, 2017


Hi, Anonymous for this scenario you will need your service/owners manual if you can't find the best tool you ever bought for your Honda, 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.
Top End Torque Specs
https://crfsonly.com/forum/viewtopic.php?t=38946
Honda CRF450X 2005 Service Manual
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2005 Honda CRF... | Answered on Jun 26, 2017


Hi, Anonymous for more information about your question 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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2005 Honda CRF... | Answered on Jun 26, 2017


Hi, Anonymous and the usual suspects are:
1. Damaged or restricted fuel tank venting system.
2. Loose float bowl screws.
3. Damaged float bowl o-ring.
4. improper fuel level in the float bowl.
5. Worn or dirty inlet valve or seat.
6. Damaged or leaking float assembly.
7. Particle contamination in inlet fitting cavity.
8. Damaged petcock diaphragm allowing fuel to flow through the vacuum line into the combustion chamber.
9. Contaminated fuel tank.
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.
https://crfsonly.com/forum/viewtopic.php?p=297692
Fuel leaking from overflow of carb
Honda CRF450X 2005 Service Manual
http://www.partsfish.com/page/oem-parts-for-honda
Honda CRF450R Owner Manual

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

2005 Honda CRF... | Answered on Jun 26, 2017


Hi, Lappies for this scenario you will need your service/owners manual if you can't find the best tool you ever bought for your Honda, 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.
torque specs
https://crfsonly.com/forum/viewtopic.php?t=38946
Honda CRF450X 2005 Service Manual
http://www.partsfish.com/page/oem-parts-for-honda
Honda CRF450R Owner Manual

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

2005 Honda CRF... | Answered on Jun 26, 2017


remove the front number plate and inspect the cdi box, look 4 damage 2 the case then check wiring connectors-should a 4wire and a 6wire block.also check LH engine casing 4 damage (gear lever can smash it if u crash) this is where the stator coil is-which is the power source 4 the ignition system. hope this helps.good luck.

2005 Honda CRF... | Answered on May 09, 2016


hello sounds like its running hot to be pushing out of overflow, you will need water pump if its coming out of weep hole, good luck

2005 Honda CRF... | Answered on Jun 26, 2014

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