Question about 2004 Honda CRF 450 R

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450 problem staying running

After about 15 kicks my bike starts runs for about 2min. with choke on then it shuts off verry abrubtly almost sounds like it seized it shuts off so fast.jump on it kick it again first kick really hard after that it kicks normally and it does same process all over again

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  • Honda Master
  • 767 Answers

It seems there is fuel starvation to the carburator,
clean the carburator and fit an 'in-line' fuel filter.
Its adviseable to check the spark plug too!
Check its gap too.
Hope this will help.

Knight

Posted on Feb 02, 2009

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Yzf 450 wont start when hot


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Hi,i have an 06 aprillia mx 2 stroke. i tried starting it the other day after it had bin sat for a few months but just wouldnt go. im not exactly sure on the correct procedure for a kick start...any advice...


Check your spark plug. If it is not all black, it should be ok. If it is, replace it. Reinstall new plug, Kick it full choke no throttle. Let it run for 15 secs with the choke on. Shut the choke off while reving it. If the bike will not idle, clean the carb. Chaz Moto DC

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1 Answer

When i start the atv with the choke it stays on , but when the atv is started without the choke it shuts off. My atv is a Yamaha grizzly


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1 Answer

Bike is sometimes hard to start.When bike stalls and goes dead,it is hard to start again.This is a 2003 honda crf450.


There is a proper way to start the engine. Four controls are on your bike to assist in starting.
  • The choke, used when the engine is cold. Pull the red knob for choke.
  • The " Hot Start " Lever, used when the engine is hot. Pull the lever to lean the fuel mix when the engine has been running.
  • The de-compression lever, always used.
  • The throttle, used to prime the cylinder.
Don't kick, instead, push the kick lever downward. You will feel the back pressure as the piston is going upward on the compression stroke to the point the pressure is great enough that the kick lever "locks up". You are very close to TDC. NOW, pull in the de-compression lever. Push the kick lever a little bit more to get the piston past TDC. Now release the de-compression lever. Give the throttle a 1/4 turn then let it snap closed. A diaphragm in the carb gives a shot of gas when this is done. DO NOT do this multiple times because you will flood the engine. Leave the throttle closed when kicking. A flooded engine will often backfire. Now give a strong kick through the full sweep of the kick start lever. Quickly get your foot off the kick lever at the end of the kick to avoid any chance of "kickback" from the kick lever. This happens in the case of a misfire, aka > backfire. It can be very painful, and can even break a leg. I am serious about that. Repeat the process (but without the throttle priming), until the bike starts. A good battery, a clean spark plug, a clean carb and clean air filter will also aid in starting.

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1 Answer

02 crf450r starts up fine.... let choke off then


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1 Answer

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you need to check your choke prob not a choike issue just you have it open or its stuck but it sounds like a easy fix

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