Question about 2004 Honda CRF 250 R

1 Answer

There is a good spark good compression clean fuel but it wont start

Posted by on

  • clive pearson
    clive pearson May 11, 2010

    How did you check for fuel and spark at the cylinder , ie: was the plug wet with fuel when you removed it and did you check the actual plug was sparking ... Some plugs will spark outside the cylinder but fail under pressure ... if the plug was dry chances are the carb jets are blocked or the fuel line to the carb , I know you say youre getting clean fuel but at what point ?. regards Vortash



1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 152 Answers

Hi there... Here is some food for thought.... If you have good spark, good fuel and compression , check the rectifier, If this is faulty you will get the same symptom's  The rectifier is generally located under the seat and is one of the first things coming off the battery,  ITs primary function is to control the power coming from the battery to supply a steady and cleaner power supply to all electronic components so.. you may have spark but your timing will be either lagged or premature before the spark can ignite it. ITs generally not an expensive part and is usually over looked in most cases like this...

Posted on May 14, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

I have a storm responder generator briggs and Stratton 5500 drained all of the old fuel and cleaned spark plug generator wont start what could be the problem

tankfilter not sludged tank fuel tap filter working clean it fuel hoses good ?(allways first take airfilter off in case of test temporarily) clean it with some fuel if its need will sometimes help) carburetor float chamber the sprinkler .
in most cases the OILLEVEL can be to low level it to the right position The oil level must be against the screw of the dipstick if nothing helped disconnect the Oil surveillance but only Temporarily try it look the sparkplug for a good blue colored spark is the compression good the valves also old fuel isnt not allways a problem only when compression is bad because of Octane number

Jun 20, 2017 | Briggs Electrical Supplies

1 Answer

Blower wont start poulan pro

You must begin by doing a systematic diagnosis of the unit. First, do you have good compression 125 -140 lbs on this size engine. Are you getting good spark, must be tested with a spark tester. Do you have fuel supply? Are the fuel lines in good shape and not clogged. Fuel filter, is it flowing fuel. Has fuel set in the unit? Carburetor may be clogged. I would need cleaning or replacing.

Oct 09, 2016 | Poulan Garden

1 Answer

2006 arctic cat wont start

If you've got decent compression, spark and fuel and it wont run - what about about air? Clean / new air filter installed? All 4 are needed to run.

May 13, 2015 | Arctic Cat 2006 650 H1 4x4 Automatic SE

1 Answer

2001 nissan sentra cranks but wont start

Dean, it looks like your on the right path ,with all 3 things as you stated it should do something, did you try a little starting fluid , you could use a timing light to check for good steady spark . what other kind of work have you done to it ? re check your work ,when you did compression test how did the plugs look =clean =soaked in fuel = nothing at all? Woody.

Aug 27, 2014 | 2001 Nissan Sentra

1 Answer

Why wont my chainsaw start

First, pull a compression check, if you get under 115 lbs there is your problem. If the compression is good, use a 3-point spark tester to check the amount of spark. If good, you have fuel delivery issues. Check fuel lines, fuel filter and lastly the carburetor itself.

May 21, 2014 | Husqvarna Garden

1 Answer


does it have a spark and good compression.?

Jan 19, 2014 | Stihl Saws

1 Answer

My 2004 chevy malibu classic 4 cyl wont start its

There are four things required for an engine to run: air, fuel, compression and properly timed spark. If you have fuel and timed spark, the only two variables are air and compression. Air is not the likely problem, and compression should be good unless you blew a head gasket or the rings in all four cylinders. How did you determine that you have fuel and spark? Those are the two most likely problem areas.

Oct 10, 2013 | 2005 Chevrolet Malibu

1 Answer

I got a 2000 ford focus that cranks but don't starts, fuel pressure is good, good spark but spark plugs are pretty worn out can that cause it to do that?

You only need three things to start an engine.
1) Clean Fuel / Air
2) Compression
3) Spark

One of these is not working correctly. The fuel pressure is good, but the fuel line, fuel filter, injectors, or carb may be dirty or clogged. If the gas has been sitting for a long time, or could have water in it, there is potential for the gas to be gummed up, and it wont ignite. Start with clean, new gas, line, filter, and if it still wont start, move on to the #2, #3 items from the list above.
Move through the troubleshooting systematically.
Remember, you only need 3 things to get it to run!

Good luck

Mar 19, 2013 | Ford Focus Cars & Trucks

1 Answer

I have a 95 jaguar xj6, motor turns over but wont start. checked spark plugs and 3 of the 6 had oil in them. took cam cover off. cleaned and replaced gaskets, cleaned spark plugs, it turns over better but...

I have had simmilar, is the fuel pump delivering fuel?
Is the fuel filter clean?
Are you getting a good spark on all of the plugs?
Have you got good cyl compression?

Mar 23, 2010 | 1995 Jaguar XJ6

Not finding what you are looking for?
2004 Honda CRF 250 R Logo

Related Topics:

153 people viewed this question

Ask a Question

Usually answered in minutes!

Top Honda Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4821 Answers


Level 3 Expert

79077 Answers


Level 2 Expert

342 Answers

Are you a Honda Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides