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Old 08-27-2014, 08:45 PM   #1
rcrampton OP
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Location: Raleigh, NC
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Cry XR650L Carb Question

I have never worked on a carb before so don't assume I know anything at all about this

My bike ran fine a few weeks ago but last night wouldn't idle with the choke off. From reading around it looks like this is almost always caused by clogging of the pilot jet (slow jet). I pulled the carb tonight, easy enough, and unscrewed the pilot jet. It appears to be clean as a whistle.

I noticed that with the main jet I can blow air into the end where the screwdriver turns it, and air free flows out the other end, with the small holes. The pilot jet is blocked. A wire or pin won't poke through even with a lot of force so I thin this is by design.

This is an '01 bike. The smog stuff was removed and I think it was re-jetted. Not exactly sure on the details, I bought it used and just ride it.

Any other ideas? Thanks!
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Old 08-28-2014, 04:32 AM   #2
mcma111
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Get a can pf brake clean or parts wash and squirt it in the pilot jet passage way. Have compresses air? Follow up with a blast of air. Can you look through the pilot jet's hole?
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Old 08-28-2014, 10:36 AM   #3
gnorv
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Quote:
Originally Posted by rcrampton View Post
I have never worked on a carb before so don't assume I know anything at all about this

My bike ran fine a few weeks ago but last night wouldn't idle with the choke off. From reading around it looks like this is almost always caused by clogging of the pilot jet (slow jet). I pulled the carb tonight, easy enough, and unscrewed the pilot jet. It appears to be clean as a whistle.

I noticed that with the main jet I can blow air into the end where the screwdriver turns it, and air free flows out the other end, with the small holes. The pilot jet is blocked. A wire or pin won't poke through even with a lot of force so I thin this is by design.

This is an '01 bike. The smog stuff was removed and I think it was re-jetted. Not exactly sure on the details, I bought it used and just ride it.

Any other ideas? Thanks!
Save yourself the time and aggravation and buy a new pilot jet. I tried everything to clean one and wasted a lot of time.
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Old 08-28-2014, 11:39 AM   #4
rcrampton OP
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Originally Posted by gnorv View Post
Save yourself the time and aggravation and buy a new pilot jet. I tried everything to clean one and wasted a lot of time.
That sounds easy and cheap. I guess it's not as simple as looking at the jet and saying "it looks clean".

In the mean time I can soak the one I've got, blow compressed air, etc. and see if it cleans it up. If it does then I'll have a spare for the next time.
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rcrampton screwed with this post 08-28-2014 at 12:36 PM
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Old 08-28-2014, 12:41 PM   #5
beechum1
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Quote:
Originally Posted by gnorv View Post
Save yourself the time and aggravation and buy a new pilot jet. I tried everything to clean one and wasted a lot of time.
You did it wrong. Or had an unrecoverable jet. These things are easily cleaned, though I don't consider it bad form to have a selection of jets on hand.
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Old 08-28-2014, 04:52 PM   #6
Broken Wings
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Broom Straw...

I've found that the yellow broom straw makes a great tool to clean carburetor jets. It's tapered so it fits any size jet. It's broom straw so it doesn't hurt the brass jets. It's rough enough to scrub the crud off.

Snip a couple strands off your shop broom and poke it through the jet like a pipe cleaner...Done.
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Old 08-28-2014, 08:36 PM   #7
rcrampton OP
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I dropped the jet in my wife's ultrasonic jewelry cleaner. Now that I see what a clean jet looks like it's clear that it was very much plugged up.

The broom strand was a great idea. It cleaned out some additional muck that was left.

I'll do some more rounds of cleaning and will hopefully be back in the game this weekend.

Thanks for the pointers y'all!
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Old Today, 08:32 PM   #8
rcrampton OP
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Run's like a champ now.
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