4 Stroke Hanging or Inconsistent Idle Fix [7 Common Problems]

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[FREE Guide] "Basic Techniques" guide to trail ride with confidence - motocrosshideout.com/basic/
I bought a CRF250R 4 stroke motocross bike with a hanging idle problem. The idle RPM speed kept changing, it was backfiring when I gave it throttle, it wouldn't stay running without choke, and it required a 48 or 50 pilot jet to start and run, which is too rich for this bike.
In this video, I'll show you step-by-step how I troubleshoot, diagnose, and fix dirt bike problems such as this.
After I got it fixed, this 2006 Honda CRF250R started 1st kick cold using a 45 pilot at 1.5-2.0 turns out on the fuel screw. It has great throttle response, idles smoothly, and has great power.
The CRF150R also has a common hanging idle problem.
Tools and parts I used (Amazon affiliate links - if you'd like to support us, we thank you!):
Tusk Mini Carb Tool Kit: amzn.to/3KUq38J
Adjustable fuel screw: amzn.to/3VTBMuD
Aluminum hot start nut: amzn.to/4ct5hc3
Mid-body gasket kit (make sure it fits your specific model): amzn.to/4ccuaZF
FREE "Fuel Screw Tuning" guide: motocrosshideout.com/fuel/
Motocross Hideout is my personal brand to help new riders learn to properly and safely ride a dirt bike so that you don't crash and miss out on life because of an injury. My Virtual Dirt Biker School is an online riding course/camp that teaches anyone new to dirt bikes the basic techniques to stay in control and become a better rider faster. I've taught many first-time riders over the years, both guys and girls, young and old.
Motocross Hideout - "Learn More: Ride More"
Disclaimer: Dirt biking can be dangerous if you don't respect the bike or terrain. This video shows you tips to help keep you safer as well as improve your riding technique and skill so that you stay in control while riding. I, Kelley Fager from Motocross Hideout, am not held responsible for a crash resulting in an injury from trying these techniques. Please use proper dirt bike riding gear to help prevent an injury.

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3 июл 2024

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Комментарии : 12

@Dominic_Mullen 12 дней назад

you are such an underrated youtuber keep up the good work

@MotocrossHideout 12 дней назад

Thanks Dominic, much appreciated.

@jimheywood5895 6 дней назад

Thx for the simple steps, it seems like not running the bikes is the worst thing for them

@MotocrossHideout 6 дней назад

Yes, mainly due to pump gas causing so many problems when it sits, especially if it has ethanol in it. If you could get ride and get the engine up to full operating temps at least once a month, you'd rarely have those problems.

@lukem20001 3 дня назад

Great vid man. Thanks for all the tips. Mine is doing similar. But only after I messed with the carb. Now I def have an air leak. So need to pull the whole thing off. Any vids for getting the carb off easy. As when I tried it was a nightmare

@MotocrossHideout 3 дня назад

CRF250R? Yeah it's a pain, but I've gotten fairly quick at it now. -Take seat off (I usually tank the tank off as well) -Remove muffler -Remove subframe (make sure carb clamp is loose first) -Remove rear shock (2 bolts - bike needs to be on a square stand) -Now you have easy access to the carb For getting the carb back on, I put the carb into the engine side manifold first, then remove the air filter and stick my hand through the airboot and push it onto the carb bell so that it's fully seated.

@user-sm3bj8ui3v 11 дней назад

I give gas to the KTM and it continues to hold it, the revs drop after 10 seconds, sometimes it revs up on its own, the fuel screw is fine, I don’t know what it is, please help ❤

@MotocrossHideout 10 дней назад

Did you try all the steps I covered in this video?

@mineer-pg5sv 9 дней назад

Sounds like an air leak to me do a leak down test

@oNixsz 11 дней назад

Can I rev my bike when in neutral gear?? Because when I am doing that, it turns off 😅

@okok-oc4ko 10 дней назад

Probably a lean mixture, a whitish colored sparkplug may confirm this suspicion.

@MotocrossHideout 10 дней назад

As mentioned, it could be lean, but dirt bikes aren't meant to be revved in neutral with no load on the engine. If it's doing the same thing when in gear and you're trying to accelerate, then I'd try and fix it, if that makes sense.