Question about 2005 Honda CRF 450 R

2 Answers

2005 Honda CRF 450 R vent hose from bottom of carb is leaking gas

Posted by Anonymous on

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2 Answers

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  • Honda Master
  • 33,581 Answers

Single right answer would be needle and seat leaking. not the canned covers all answers

Posted on Jun 26, 2017

  • ANTISPAMMER Jun 26, 2017

    single right answer would be needle and seat leaking. not the canned covers all answers

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  • Honda Master
  • 59,816 Answers

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

Posted on Jun 26, 2017

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Posted on Jan 02, 2017

tombones

  • 3567 Answers

SOURCE: honda 750 shadow gas leak

It is a vent / overflow hose. It drains to the atmosphere / street. If gas is coming out and isn't stopping then a float is stuck.

Turn off the gas and drain the offending carb(s). Next, turn the gas back on and sharply tap the float bowl with the plastic handle of a screwdriver as the fuel bowl refills. The goal here is to vibrate the float to free it up. If doing this process a couple of times does not free the float I would remove the carb(s) and look for any misalignment of float pin, needle or adjusting tang.

Now re-clean with a spray carb cleaner. Clean the air filter then re-mount carb(s). Next, Remove the water trap bowl at the bottom of the petcock, (gas valve). Dump it, clean it and re-mount it, ( not all bikes have a trap bowl ). INSTALL AN IN-LINE FUEL FILTER..

Posted on Apr 09, 2009

jmhsn

  • 12 Answers

SOURCE: Hi. I've got gas leaking from two carb drain hoses

Thought I answered this...Pull off the fuel hoses at the valve and check that flow stops in the off position. Remove the 10mm head sediment bowl and check for dirt/rust. Sounds like 2 float valves are leaking because of dirt or foreign matter. Pull off the float bowl drain hoses on the carbs and loosen or remove the drain screw to check the fuel condition.

Posted on Mar 22, 2010

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Hi, Anonymous and the usual suspects are:
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2. Loose float bowl screws.
3. Damaged float bowl o-ring.
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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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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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