Need help identifying carburetor gunk and removing pilot

[Monkeytofu]

Not sure if it's OK to make this many threads, but it seems this problem isn't related to my previous thread's original problem. I've removed the carbs once more and I found them to be extremely dirty.

I'm also unable to remove one of the pilot jets. Either I ruined the shape or the PO did so. Anyone know how I can remove this and if I need to replace it? I can't seem to find a proper flat head screw driver that feeds down that hole.

Here are pictures of the dirt after attempting to use my bike:





The black gunk turned white after sitting in the air for a couple of minutes. The gunk around the edges is some sealer I used to hold the seal in place while I put it back in. The only thing I can think is that it might be from the sealing paste, but I didn't put THAT much and I didn't put any inside of the carbs.

[alex.s]

i can accurately identify said gunk as "Filthy Crap"

look in your gas tank.

[dino74]

Berryman's Chem Dip

This stuff works. The only downside is you need to completely disassemble the carbs so no plastic parts touch the dip.

[Monkeytofu]

Originally Posted by alex.s

i can accurately identify said gunk as "Filthy Crap"

look in your gas tank.

I'll be taking another look, but I've just recently replaced the fuel entirely and added a fuel filter. Maybe some of my gas grabbed the grease from when I relubed the lock but I would expect my filter to stop that :/

[Monkeytofu]

Originally Posted by dino74

Berryman's Chem Dip

This stuff works. The only downside is you need to completely disassemble the carbs so no plastic parts touch the dip.

oh I've heard of these dips. Would this clean out the stuck pilot jets as well? I'm afraid of ruining the threading even more at this point and don't want to touch them unless i get a correct size screw driver.

[dino74]

Originally Posted by Monkeytofu

oh I've heard of these dips. Would this clean out the stuck pilot jets as well? I'm afraid of ruining the threading even more at this point and don't want to touch them unless i get a correct size screw driver.

I don't know if it will help with the stuff threads...

[jcgss77]

Originally Posted by Monkeytofu

I'm also unable to remove one of the pilot jets. Either I ruined the shape or the PO did so. Anyone know how I can remove this and if I need to replace it? I can't seem to find a proper flat head screw driver that feeds down that hole.

I would take the jet you got out, and fit a screwdriver for it that has a thickness which very closely matches the slot. Then grind down the sides of the screwdriver so that it will fit into the jet, and you now have yourself a jet screwdriver.

[Monkeytofu]

Originally Posted by jcgss77

I would take the jet you got out, and fit a screwdriver for it that has a thickness which very closely matches the slot. Then grind down the sides of the screwdriver so that it will fit into the jet, and you now have yourself a jet screwdriver.

Didn't even think of this, great idea!

[Monkeytofu]

Got one to fit... it still won't come out. How the hell can this jet be stuck this hard in there when the other one came out so easily!

Edit: Looks like this one may have to be drilled out at some point... Good thing it's only 2 or so dollars online.

[n4mwd]

Try an impact driver first. You beat the end with a hammer and it converts the beating motion to a rotary motion and gets the screw out. Harbor Freight sells one.

Also, if you know someone with an ultrasonic cleaner, it might be able to vibrate the jet enough to where it comes out easier.

If you drill, Harbor Freight sells a reverse drill bit set. But drilling should be a last resort. Its usually what one does right before he orders a new carb from ebay.

Another thing. Whoever reassembled the carb should not have used silicone sealer on the gaskets. Silicone sealer is not for use with gasoline. The gaskets work fine on their own. If you need help getting them to stick in place while you assemble it, use a thick grease.

Whatever was left of the sealer may be responsible for the current damage. If it is, then using a long tipped pencil type soldering iron to heat the jet may cause it to release the bond.

[davenay67]

Originally Posted by n4mwd

Try an impact driver first. You beat the end with a hammer and it converts the beating motion to a rotary motion and gets the screw out. Harbor Freight sells one.

If you attempt this, be very careful. Pounding on a soft aluminum casting can be a recipe for disaster if you're not careful. I would always try and remove it with either a screwdriver or perhaps a small stilson wrench. Be sure to lube it copiously ahead of time with something like PB Blaster or Kroil. Little bit of heat applied directly to the head of the jet from a pencil torch may help in addition to the penetrating lubes mentioned above.

[Monkeytofu]

Originally Posted by n4mwd

Try an impact driver first. You beat the end with a hammer and it converts the beating motion to a rotary motion and gets the screw out. Harbor Freight sells one.

Also, if you know someone with an ultrasonic cleaner, it might be able to vibrate the jet enough to where it comes out easier.

If you drill, Harbor Freight sells a reverse drill bit set. But drilling should be a last resort. Its usually what one does right before he orders a new carb from ebay.

Another thing. Whoever reassembled the carb should not have used silicone sealer on the gaskets. Silicone sealer is not for use with gasoline. The gaskets work fine on their own. If you need help getting them to stick in place while you assemble it, use a thick grease.

Whatever was left of the sealer may be responsible for the current damage. If it is, then using a long tipped pencil type soldering iron to heat the jet may cause it to release the bond.

It was not silicone based. I used a gasket grease recommended in a previous thread by @Motofool. Maybe I put too much and it got in?

I actually lost my one good pilot jet somewhere in my garage... This is what I get for trying to do motorcycle repairs when I'm fasting

Do you guys know what type of #38 pilot jet goes into that spot? A couple motorcycle stores have #38 Keihin jets but I don't have a jet to check them against anymore. I guess I'll keep looking, but it's doubtful I'll find such a tiny piece.

[Motofool]

Sincerely sorry

I used it once in a car carburetor repair without any problem.

[Monkeytofu]

Originally Posted by Motofool

Sincerely sorry

I used it once in a car carburetor repair without any problem.

Motofool

Daily Carb Destroyer

[jcgss77]

Originally Posted by Monkeytofu

Got one to fit... it still won't come out. How the hell can this jet be stuck this hard in there when the other one came out so easily!

Edit: Looks like this one may have to be drilled out at some point... Good thing it's only 2 or so dollars online.

Are you talking about the jets? If so, WHERE IS THIS MAGICAL PLACE?

You can also try a couple more things: You can boil the carbs in water, this should loosen stuff up, not to mention clean it up a bit too, or you can do a week-long pine-sol dip. You can also get carb dipping solvent from a local motorcycle dealer, they have stuff that you can soak your carbs in, plastics and all. My Kaw dealer told me that they can sell me a bottle for about $7, and you dilute it with water.

[Monkeytofu]

Originally Posted by jcgss77

Are you talking about the jets? If so, WHERE IS THIS MAGICAL PLACE?

You can also try a couple more things: You can boil the carbs in water, this should loosen stuff up, not to mention clean it up a bit too, or you can do a week-long pine-sol dip. You can also get carb dipping solvent from a local motorcycle dealer, they have stuff that you can soak your carbs in, plastics and all. My Kaw dealer told me that they can sell me a bottle for about $7, and you dilute it with water.

Yes, I'm talking about the pilot jet. The sides of the flat head top have been pretty worn down by both the PO/previous mechanics and myself. The thing refuses to budge. I'm going to try and take it to a friends mechanic tomorrow and see what he recommends. If he can't get it out himself I'm going to try heating it up, the grease thing mentioned before, and drilling it out if all else fails.

It seems something in the threading for this jet is making it stick so the carb cleaner in a can hasn't done a single thing to ease it out.

Edit: I also recommenced to anyone else with their carbs to replace all the screws they can with some nice stainless steel allen head bolts. Makes life so much easier.