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 on: September 11, 2019, 04:59:35 AM 
Started by SuTzu - Last post by SuTzu
is it common for a pilot jet to block itself? I've been dailying it for a few months now but originally it sat and got clogged real bad which I cleaned all the parts and put it together so I could use it.

 on: September 11, 2019, 04:12:05 AM 
Started by SuTzu - Last post by umop-ǝpisdn
I second.

 on: September 11, 2019, 03:39:50 AM 
Started by SuTzu - Last post by albertinhouston
Just because its cracked on the out side doesnt mean it goes all the way through.
Remove the culprit cylinder plug wire. Twist off the plug cap.
Trim a bit off. Screw the cap back in install.
That or....
Be sure the pilot jet isnt clogged

 on: September 11, 2019, 02:42:04 AM 
Started by SuTzu - Last post by SuTzu
Carb gt250r in question

Vid is below

*updated to include a pic of rear spark plug

The bike has been great up until a few days ago when cold starting I noticed the exhaust having a little pop at idle every few seconds and idle starting to drop to stalling.  Once it's warm (if I rev it to almost 2ish to warm it initially then it will stay idling and warm up and I can ride it just fine)
I held my hands on both exhaust pipes and could feel the front warming but the rear was still cold.
I have never used the choke as it always caused it to immediately stall (have filter & exhaust upgrades with jets) but I thought I'd try it out just now to see if it was a low fueling problem.

I noticed at work the other day that I have a giant crack in the front manifold (2:16 in vid), I imagine perhaps both are of equal condition but it's the rear that seems to be having the issue.
I'm going to check the plugs today (although they have only done 1500miles)
Is there anything else those of you more familiar with these bikes could give me a headstart on what to check?

Thanks :)


 on: September 10, 2019, 01:49:30 PM 
Started by AustralianLag - Last post by albertinhouston
I found the thread.
#4 is what i'm talking about.

 on: September 10, 2019, 01:35:50 PM 
Started by AustralianLag - Last post by albertinhouston
This is just my personal opinion but its a pretty good one as I have clean a bunch of carbs.
 I haven't had one bike that i "HAD to" sync the carbs to get it running well enough to be driven on the road.
Carbs are a funny thing... when you think you have then clean you'll need 2 more tries. hahahaha.
Then main thing for you right now is to find out which cylinder is running bad.(maybe both)
spray some water on each header pipe while the bike is running. A properly running bike will bead off instantly.
if the water take a while to burn off that cylinder is not running correctly.
you may have one that is running good and one not.
By doing this you can focus on the one that not working properly.

Search my posts I have posted how I clean carbs and what needs to be gone through.
I'm not sure what the pipe is for but I know when it's clogged it runs bad. It's next to the Main and pilot jets. It's a brass tube with a small hole in the top.( you can not remove the tube). you should be able to blow are through it.

 on: September 10, 2019, 01:15:59 PM 
Started by AustralianLag - Last post by AustralianLag
Here's a different link, hopefully it works https://youtu.be/KOe1_SYjSHM

It does start backfiring a fair bit when holding the throttle.
(No throttle at all in the video by the way)

As for the history, bike hasn't been on the road in months since I had a different issue with it. Bike wouldn't start at all, turned out to be the CDI.
Now have it running but I get what you see in the video.

Also has new plugs and coils.

 on: September 10, 2019, 12:37:30 PM 
Started by AustralianLag - Last post by albertinhouston
If we could have a little more history on the bike....
Is it a bike that sat for while?
Did this just start happening?
Did you work on something and it start to act up?

 on: September 10, 2019, 11:34:50 AM 
Started by AustralianLag - Last post by umop-ǝpisdn
The video didn't work.

What happens when you try and hold a steady RPM? Does it buck and dive?

 on: September 10, 2019, 09:41:41 AM 
Started by AustralianLag - Last post by AustralianLag
Hi all,
So as per the title, I've been having issues with my bike. I suspect carb related. I'm pretty new to working on bikes, especially with a carb, so apologies if this a obvious.

I've taken a video with a carb sync tool on the bike to give some idea of where I'm at.

Never used one of these tools, but they are showing similar reading.

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