Question about 2004 Honda CRF 250 X

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My bike bogs out when you jump on the throttle too fast. Also crackles and backfires. Bike has very few miles and only gets rode a couple times a year.

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Have you added a exhaust system, air filter change? or any modification to the intakes or exhausts, controllers etc?
if not, accelerator pumps may be bad, floats are set wrong carbs not synched, CDI or Magneto Alternator etc issues> ballast resistors etc, cloggged jets or float needle sests may need a diagnostic by a pro.

Posted on Dec 27, 2010


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Just purchased bike from owner who had the bike stationary for a while. While riding it sputters and jerks. Once I open throttle it moves. it only has 9900 klm and it is in fantastic condition.

Hi The dealership are right but there are ways of dealing with the problem that don't require loads of cash. I had a similar problem with a Suzuki SV some years ago. i researched the problem on the web and spoke to a few bike performance places fuel goes off and causes all manner of problems with fuel injection and carbs.

I cured my problem by get a couple of bottles of injector and carb cleaner for petrol.engines you simply pour it into the tank and ride. I used Comma Petrol Magic (about £6 here in the UK) filled to nearly full tank poured the contents of 1 bottle into the tank and rode around after a few miles and a few small backfires I found the bike was performing much better and idle was nearly normal. I use this product every couple of months (normally ½ a bottle to a full tank) bike rides great. Hope this helps.

Oct 16, 2015 | Motorcycles

2 Answers

Whats wrong when your riding and the bike starts cutting out, backfiring, then just goes dead?

The first thing that you can check is the fuel pump, wiring and fuel filter. The power wires coming from the ignition, sometimes get corroded. the symptoms sounds like fuel starvation.

Mar 15, 2015 | 2001 Suzuki SV 650 S

1 Answer

Where is the throttle sensor

TPS usually on the throttle bodies, also check tip over sensor is not on an angle.

Nov 17, 2014 | Motorcycles

1 Answer

I have a1996 xv virago 250 that sat for a couple of years. it started right up with the full choke, after a while we got it to start and run with out choke. when i tried to put it into first gear it...

I'm surprised it started and ran. Most often the fuel system is fouled out to the point it need to be repaired. Okay the problem you are having now is the clutch is seized and with a little luck you can break it free. If the engine starts and revs freely without bog or backfire then here is a way to see if you can loosen it up.

Select a quiet long street or empty parking lot. Start the bike in neutral while sitting in the ridding position and get someone to push you fast enough that you can maintain balance. Pull the clutch in and put it in 1st gear, it'll clunk in hold the cluch in as you are giving it a little gas to maintain a low speed. A low speed where the engine isn't at high revs but still fast enough to keep your balance.

Now here is the part that breaks it free. With the clutch still pulled in crack the throttle and back it off. The bike will leap ahead and brake down when you do this so prepare your self for the lung ahead and the stopping. Don't let the bike get down to a stall speed or it'll just kill the engine and you'll fall off. A few times doing this will **** the clutch free, once free it'll operate as normal.

Remember to keep the clutch pulled to the handle bars as you are doing this.

I had a 350 Honda that would do this to me and it was just a (four letter word) to break it free once free I didn't have anymore problem with it.

Cheers hope that works for you as it did for me and don't fall of the thing ;-)

Mar 20, 2011 | Yamaha Xv 250 Virago S Motorcycles

1 Answer

2003 buell xb9 running poorly at idle bogging out at 3000rpm when given throttle and sometimes backfiring out of the intake. I have had to jump the battery a couple times in the recent past.

First, any modifications? running an aftermarket pipe or open intake without changing to either a "race ecm" or getting the original re-programmed via ECMspy or a similar software package can result in those issues.

If that is not the case it sounds like a vacuum leak. and I've heard of a few people having to replace the seals underneath the throttle body. check this out by spraying a bit of carb cleaner down around that area and if the bike picks up idle then you've found it.

May 23, 2010 | 2003 Buell Firebolt XB9R

2 Answers

Backfire when I get off the throttle and down shifting

no your totally wrong the backfire is bcause if u juice the throttle there is excess fule in the cylinders witch give it no where to go so it ignights and creates a backfire witch is not necessarly bad.

Sep 15, 2009 | 2004 Harley Davidson FLHTC - FLHTCI...

1 Answer

Charging Issue with 1997 Shadow Spirit VT1100C

hi no way all the guy wants is money any good guy has the right test gear and would test all the charging /starter compnants before replacing the whole caboose buy youself a small cheap volt meter £5/£8 check the battery voltage start motor needle should go up to around 14 put lights on needle should not drop if this is ok then rr and stator is ok stop motor leave lights on if voltage drops rapidly battery is us hope this helps merlinv12

Aug 20, 2009 | 1997 Honda VT 1100 C Shadow Spirit

1 Answer

Need help bike died while riding

everything working perfect. Wednesday night i was riding home from work and got about halfway home bike had a small bog while coming up for a turn onto another street pulled in the clutch and stall. Rolled to a stop and fired the magic button. The motor would turn over and act like it wanted to run (had to give a small amount of throttle) for about 2-3 seconds and then would die. Did this about 5 times and the typical dead or low batter clicking occured. Got the bike home and it has been on the tender for the last 2 days and i just put some time in on the bike and sure enough bike will turn over although kida sputtering and making slight backfire sounds (almost as if timing is off) and will run for about 2-3 seconds and dies. I can do this about 4-5 times and the infamous clicking starts to happen again. Now my bike has never been a cold start bike, i always have to give it a bit of throttle when its cold to keep it running, but once it warms up runs like a champ...or atleast it used to. Its a fairly new battery and has been kept on the tender when the bike is not used for a few days. Now the other thing that bothers me is it seems that oil may be seeping out from where the head and the case meet, but very little. The motor does have a slight coating of oil around the gasket area. I did send the motor to ATK back in late 04 or 05 and had the reliability and upgrade done to it but have only about 500 total miles on it since then, with about 400 of those in the last coulple of months. ,Even with a good bike battery 4-5 tries is about all they have.So forget about the battery and go with basics fuel,compression and spark. Also sounds like you need some mapping help, you should never have to touch the throttle when starting. The will run perfect if they are tuned. Do you know what map is in it? Did ATK also change the ECU to a .atj map?,,,

Nov 10, 2008 | 2003 ATK 260

1 Answer

Moto 6

5I have recently purchased an Aprilia Moto 6.5. It is a rare bike here in New Zealand is it possible to get a manual for this bike anywhere? The bike had been in storage for a couple of years and the odometer is only 7000 miles (11,000 km). It backfires when you throttle off. I've adjusted the mixture to run richer, but it has started doing it again, is there anything special that i should be doing with the carburetor (Mikuni BST-40)?,There is a manual in the downloads section. Here is the link:;showfile=857,,,

Nov 10, 2008 | 2000 Aprilia Moto 6,5

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