Question about 2004 Honda CRF 100 F

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Not getting spark at the spark plug on a 04 crf 70

Not getting spark at spark plug and bike wont start

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  • 85 Answers

Start with new plug ., then work your way to stator ., so plug., plug wire ,.coil.,, cdi ., stator.,., easy to test all them and chase your faulty part

Posted on Jan 05, 2017


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Posted on Jan 02, 2017

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SOURCE: honda cbr 900 94 wont start

hi m8,, having a head ache i see,, my m8 had one of these,, still has,, and had the same problem, i see u have checked a few things there ,,and convinced they are ok,, then ,check u dont have an air leak in the air box,, and all clips are secure, and that u havent creased the fuel or vacume pipes under the tank,,if all is ok, behind the rear side panel is the aluminium lookin cdi box ,or ignitor, with about 5 or 6 wires connected to it,, u need to get this tested ,, or borrow 1 and try it,, there about 130 quid new, so test it 1st,, this does play up,, and 1 min it runs great,, next day 2 miles up the road itl stutter ,,or stop,, any probs m8,, shout and i will anserw,,cheers

Posted on Jan 30, 2009

  • 5 Answers

SOURCE: 2004 honda crf 150 wont start

how menney miles has it dun???check compreshon on bores.shoud be 110+psi 4 good running.

Posted on Apr 21, 2009

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SOURCE: 2005 crf 70(throttle govenor)??

an inexpensive way is to restrict full movement of the carburator cam (where the throttle cable enters) mechanically, to 75% throttle or whatever

Posted on Jun 15, 2009

  • 29 Answers

SOURCE: electrical- no fire @ plug honda crf 70 2006 year

run wire from one side bolt to other side and try again if it works coil is bad did you replace plug and check gap?

Posted on Jul 08, 2009

  • 6966 Answers

SOURCE: 2005 crf 70 wont plug and wire.

Hi and welcome to FixYa,

Initial checks:

  • check for spark on the sparkplug when starting;
  • check that fuel is reaching the combustion chamber (sparkplug would be wet);
  • check for engine compression.

Postback results.

Good luck and thank you for asking FixYa.

Posted on Dec 28, 2009

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I have a 2005 CRF 70 that won't start. I pulled the plug and held it against the cylinder head while kicking the starter lever and it is sparking. If I put my finger over the plug hole and crank it, I...

Hi, Paul and the usual suspects are:
1. Fuel tank empty.
2. The fuel tank has old dead gas.
3. Fuel tank bottom contaminated with ethanol sludge, dirt, water, rust, etc.
4. Fuel supply valve/petcock turned off.
5. Fouled spark plugs.
6. Engine flooded as a result of overuse of the enrichner.
7. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
8. Fuel valve/petcock or filter clogged.
9. Fuel line to carburetor or throttle body pinched, kinked or blocked.
10. Carburetor float stuck.
11. Fuel injectors clogged.
12. Fuel injectors stuck open.
13. Severely discharged or a damaged battery should have 12.5 volts or more and be able to pass a proper "LOAD" test if necessary, you may have a cursory 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.
14. 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.
15. Loose or corroded wire connection at the coil or plug between ignition sensor and ECM module.
16. Spark plug cables in bad condition and shorting check for spark leakage in the dark, cable connections loose, or connected to the wrong cylinders.
17. Ignition timing incorrect due to a faulty ignition coil, ignition module or MAP, CMP, CKP, O2, TPS, ETP, IAC sensors.
18. Faulty neutral, clutch, kickstand safety switch.
19. Faulty fuel pump or fuse or relay.
20. A stuck bent or burnt valve.
21. Tilt sensor needs a reset.
22. Security system not disarming alarm needs a reset.
23. Check for engine trouble codes.
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.
Bike wont start out of ideas
CRF70F service manual repair 2004 2012 CRF70 Download Manuals Technical $15
HONDA CRF70F Owner Manual

Sep 04, 2013 | 2005 Honda CRF 70 F

1 Answer

My crf 100 wont start it seems like its not sparking. i got a new spark plug and i dont see no spark what do i do i wanna ride

Be sure that the handlebar and side stand kill switches are off. Have a friend kick the bike over ( in neutral ) while you ground the bottom of the plug against the cylinder. Without being grounded, the plug can't spark. Don't twist the throttle more than once when starting. You can easily flood the engine.

Mar 17, 2011 | 2004 Honda CRF 100 F

1 Answer

04 crf 450 starts hard most times we have to push start it but after that it starts fairly easy.

crf honda's run titanium valves which wear out very quickly if valve clearances not checked very regularly. what happens is the valve wears on its sealing face and clearances close up and then valve rides and looses compression,much like a leaking tap. bike will make more compression and valves will try to seal when warm. i probably rebuild one of these bikes a week with this problem. get it to your dealer and have clearances done. you can get stainless steel valve conversion kits which are much cheaper than honda titanium valves.

Aug 31, 2010 | 2005 Honda CRF 450 R

1 Answer

My bike wont start, changed the spark plug and fuel, it will bump start but then cut out again. any ideas?

Since it starts and thn cuts off, it shows tht there is sparks and some fuel do go through to the combustion chamber.
You may need to clean the carburator, theres no enough fuel flow to it and thus the none start and whn it does it cuts off!
Hope this helps!

Aug 05, 2010 | 2005 Honda CRF 250 X

1 Answer

My crf died on me while racing and on a flat straight! it had just had the shims done the day before but was stil not startin properly, \r\ni thought problem might of been spark plug but i have replaced...

gonna have to pull the head if something is hitting the park plug. check and make sure the proper head gasket is installed and that you are running the proper spark plug. also when you have the plug out put your thumb on the hole and have someone kick it, the pressure should force your thumb off the hole, if it doesnt, its time to redo the top end.

Jun 13, 2010 | 2005 Honda CRF 250 R

1 Answer

2005 crf 70 wont plug and wire.

Hi and welcome to FixYa,

Initial checks:
  • check for spark on the sparkplug when starting;
  • check that fuel is reaching the combustion chamber (sparkplug would be wet);
  • check for engine compression.

Postback results.

Good luck and thank you for asking FixYa.

Dec 28, 2009 | 2005 Honda CRF 100 F

1 Answer

How do i adjust my carb for my honda crf 70 its either

To know if it is too rich or too lean or if its ok , you will have to remove the spark plug i.e. after a short run.
If the spark plug is blackish sooty thn its rich, if its totally whitish thn its lean, if is brownish, its ok.

To adjust this you will need to set the air-mixture screw. Tighten it all the way in slowly taking care not to overt tighten it as you may damage the tip of the screw, thn unscrew it 2 &h alf to 3 turns outwards, start your bike's engine and monitor, you may thn go either way alittle to suit the idling.
Best would be to replace the saprk plug.
Hope this helps!

Nov 21, 2009 | Honda CRF 150 F Motorcycles

2 Answers

06 250 crfr bike wont start

sounds like piston rings gone/con rod broken, 2/4 stroke? stupid question but did you check the spark plug/s? if missing/blown off will cause low compression,

May 09, 2009 | 2005 Honda CRF 250 X

1 Answer

2004 honda crf 150 wont start

how menney miles has it dun???check compreshon on bores.shoud be 110+psi 4 good running.

Apr 20, 2009 | 2004 Honda CRF 150 F

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