Question about 2007 Honda CRF 250 X

1 Answer

2007 Honda CRF 250 X hard to start

Why is my bike very hard to start and when I get it started it misses and breaks down like it is starving for fuel it also backfires when it starts

Posted by Anonymous on

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1 Answer

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  • Honda Master
  • 45,630 Answers

Hi, Anonymous and the usual suspects are:
1. Spark plugs in bad condition or have an improper gap or are partially fouled.
2. Spark plug cables in bad condition.
3. Battery damaged or nearly discharged, should have 12.5 volts.
4. 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.
5. Throttle controls not adjusted correctly.
6. Water or dirt in the fuel system.
7. Water or dirt in the carburetor.
8. Intake air leak.
9. Fuel tank vent hose and vapor valve plugged, or fuel line closed off, restricting fuel flow.
10. Choke valve inoperative.
11. Engine lubricant to heavy (winter operation).
12. Ignition is not functioning properly (possible sensor failure).
13. Faulty ignition coil.
14. Valves sticking.
For more information about your issue and valuable "FREE" downloads that you will need for viewing and printing please click on the blue links below. Good luck and have a wonderful day.
CRF250X Hard Starting 4Strokes com
honda CRF250R Hard to Start
Honda 2010 CRF250R Service Manual
http://www.partsfish.com/page/oem-parts-for-honda
Honda CRF250X 2007 Owner Manual Competition Handbook

Posted on Aug 03, 2017

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6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

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firenut119
  • 66 Answers

SOURCE: bike won't start or wo't stay running

if air is entering the carb anywhere but the intake boot then you will have problems. if the crack is in the float bowl then you are llucky..if not..no big deal you can get a carb cheap from a slavage yard or buy it new ...if there is a crack in the air boot then it will need to be replaced...no mcguyver repairs on that

Posted on May 03, 2009

polarcycle
  • 1392 Answers

SOURCE: bike backfires and misses.

Run some Seafoam through the carbs. Should be available locally at a parts store. Mix with your gas according to directions. This will clean out the carbs, which sound like they are a little gummed up.

Posted on May 30, 2009

  • 3567 Answers

SOURCE: Bike is sometimes hard to start.When bike stalls

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.

Posted on Jun 29, 2009

vortash
  • 431 Answers

SOURCE: engine missing/ backfiring, no pulling power

Hi I am vortash sounds to me like an ignition lead short check that the leads on the pot are not sparking to earth effectively cutting off the spark to one cylinder ( electricity takes the shortest point to earth so wont reach the plug if sparking to the cylinder ) I think youll find if it was the Kick stand sensor it wouldnt even fire up .. ? check all your HT circuit for damp or damaged leads .. hope this is of help regrads Vortash

Posted on Jul 21, 2009

dnewcombe1
  • 1564 Answers

SOURCE: no fuel to carb, I think..

I would check the vacuum line that opens the fuel feed valve. It's located right under the fuel shutoff valv and is fed by the #2 carburetor.

Posted on Aug 16, 2009

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1 Answer

2008 Honda CRF 250 R is hard to kickstart


Hi, Anonymous and the usual suspects are:
1. Spark plugs in bad condition or have an improper gap or are partially fouled.
2. Spark plug cables in bad condition.
3. Battery damaged or nearly discharged, should have 12.5 volts.
4. 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.
5. Throttle controls not adjusted correctly.
6. Water or dirt in the fuel system.
7. Water or dirt in the carburetor.
8. Intake air leak.
9. Fuel tank vent hose and vapor valve plugged, or fuel line closed off, restricting fuel flow.
10. Choke valve inoperative.
11. Engine lubricant to heavy (winter operation).
12. Ignition is not functioning properly (possible sensor failure).
13. Faulty ignition coil.
14. Valves sticking.
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.
honda CRF250R Hard to Start
http://www.hondacrf.com/forums/showthread.php?1056-crf-09-wont-kick-start-but-will-bump
Honda 2004 CRF250R Service Manual
http://www.partsfish.com/page/oem-parts-for-honda
HONDA CRF250R 2006 Owner Manual

Aug 01, 2013 | 2008 Honda CRF 250 R

1 Answer

I can't get my 06 crf 250 to kick start but it


the same thing happened to me its probably your valve clearance and need to be shimmed or if they worn really bad they need to be replaced..regarding roll starting your bike it damages your bike further and your engine could seize.

Apr 12, 2012 | 2006 Honda CRF 250 R

1 Answer

Problem cold starting a Honda CRF250 2006


Hi, Anonymous there is a fuel valve and a choke 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.
honda CRF250R Hard to Start
How to start crf 250r when it cold every time
Fixed the starting problem crf250r
Honda 2004 CRF250R Service Manual
https://www.partsfish.com/page/oem-parts-for-honda
HONDA CRF250R 2006 Owner Manual

Nov 14, 2017 | 2006 Honda CRF 250 R

1 Answer

2005 HONDA CRF 250 R HARD TO START WHEN HOT


Hi, Stevensmi601 your bike starts great when cold but once it reaches operating temperature and the engine is shut off for a few minutes then you try to restart it and it will turn over but will not fire or it doesn't do anything, the usual suspects are:
1. When electronics get hot they build up resistance then stop working. It might be an ignition coil, stator, CDI unit etc. First, you must find out if the spark dies out. When the bike won't start, pull a plug wire off, stick a new spark plug in the end and ground the threads on bare metal while someone cranks the engine over. You should see a nice big blue spark between the spark plug gap. Incorrect spark plug gap will cause or contribute to a no start when hot issue.
2. Fuel Tuners have been known to cause this type of problem, disconnect it and see if resolves the issue.
3. Any engine management sensor could be faulty especially the ones that monitor temperature.
4. Gas cap not venting properly, improperly routed fuel lines they must always go down from the gas tank to the carburetor never in any kind of a loop this will cause a vapor lock. Clogged, bent, kinked, pinched or restricted carburetor vent lines will do the same.
5. Overhead camshaft valves adjusted too tight when cold, this will cause loss of compression when hot, except for pushrod engines they usually get looser when hot.
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.
https://crfsonly.com/forum/viewtopic.php?t=28695
honda CRF250R Hard to Start
Honda 2004 CRF250R Service Manual
http://www.partsfish.com/page/oem-parts-for-honda
HONDA CRF250R 2006 Owner Manual

Nov 06, 2010 | 2005 Honda CRF 250 R

1 Answer

2008 Honda CRF 250 R after the bike is warmed up it will not start


Hi, Holdennguyen your bike starts great when cold but once it reaches operating temperature and the engine is shut off for a few minutes then you try to restart it and it will turn over but will not fire or it doesn't do anything, the usual suspects are:
1. When electronics get hot they build up resistance then stop working. It might be an ignition coil, stator, CDI unit etc. First, you must find out if the spark dies out. When the bike won't start, pull a plug wire off, stick a new spark plug in the end and ground the threads on bare metal while someone cranks the engine over. You should see a nice big blue spark between the spark plug gap. Incorrect spark plug gap will cause or contribute to a no start when hot issue.
2. Fuel Tuners have been known to cause this type of problem, disconnect it and see if resolves the issue.
3. Any engine management sensor could be faulty especially the ones that monitor temperature.
4. Gas cap not venting properly, improperly routed fuel lines they must always go down from the gas tank to the carburetor never in any kind of a loop this will cause a vapor lock. Clogged, bent, kinked, pinched or restricted carburetor vent lines will do the same.
5. Overhead camshaft valves adjusted too tight when cold, this will cause loss of compression when hot, except for pushrod engines they usually get looser when hot.
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.
HONDA CRF250R 2006 Owner Manual
http://www.partsfish.com/page/oem-parts-for-honda
Honda 2004 CRF250R Service Manual
honda CRF250R Hard to Start
https://crfsonly.com/forum/viewtopic.php?t=28695

Nov 02, 2010 | 2008 Honda CRF 250 R

1 Answer

2007 honda crf 250 r hard starting when cold ,


There is a proper way to start an engine. Most bikes have four controls 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. Go ahead and give it another primer shot after the 5th kick attempt. A good battery, a clean spark plug, a clean carb and clean air filter will also aid in starting.

Sep 23, 2009 | 2005 Honda CRF 250 R

1 Answer

2005 crf450x won't start


sounds like its fuel starved.when bike stalls, remove plug and if it is dry, fuel problem. check any fuel filter and the carb bowl

Jul 30, 2009 | 2005 Honda CRF 450 R

1 Answer

CRF 50cc won't start after giving it a hose down.


hi mczukli,

you may want to blow-dry the spark . block, piston out.

just a piece of reminder, do not use too much pressure on the water and hit the bike on the engine part. Not all screws are torqued to be water tight. so water may get in, then rust it out then ruin your ride.

Jul 23, 2009 | 2005 Honda CRF 250 X

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