Stuck Jets

[Guest]

Alright, I got the old jets out, and the carburetor fully disassembled. The old jets have holes in the sides, the new ones don't. Is that ok? Also, the threads don't seem as wide as the old ones. I hope they still fit.

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[Nessism]

Those look like the wrong jets. These look like a match...https://www.denniskirk.com/mikuni/oe...prd/176040.sku

[Steve]

I usually get my jets from Jets R Us.

However, ... looking at Nessism's link, it appears that not only are they cheaper at Dennis Kirk, it appears that you get TWO jets for that cheaper price. If that's true, I will be getting my jets from DK from now on.

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[Guest]

Does it have to have the holes? What do those holes do for the GS550, as opposed to the non-hole ones?

It's hard for me to find the exact words, but I think you know what I'm trying to say.

[Steve]

The holes are there to mix the air from the pilot air jet that is in the intake throat. Without the holes, you will not have a "mixture", only a limited quantity of "fuel". The rest of the carb is calibrated for mixture, it won't know what to do with raw fuel.

Bottom line: you need the bleed holes on the sides of the jets.

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[Baatfam]

Bottom line: you need the bleed holes on the sides of the jets. .

What Steve is politely trying to say is, you don't have the correct jets.

Get the correct jets at the link above. What you have won't work.

[Steve]

What Steve is politely trying to say is, you don't have the correct jets.

Get the correct jets at the link above. What you have won't work.

Polite? Me?? Nope.

I was just adding a "why" to Nessism's statement.

Those look like the wrong jets. These look like a match...https://www.denniskirk.com/mikuni/oe...prd/176040.sku

That's probably the link you were referring to.

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[Guest]

Alright, I've ordered some jets from that link.

[tom203]

Progress is good.....
i almost hate to ask this but.....no mention of mixture screws in your fun with pilot jets....have you removed these?

[Guest]

I have not. Someone before me removed the caps that were over them, though.

[tom203]

I have not. Someone before me removed the caps that were over them, though.

This could be good or bad news....maybe they were removed previously and properly -good:
or they have been attacked and mangled - bad.
Just like those pilot jets, you need to approach them carefully with a screwdriver that perfectly fits into the cave and spans the mixture screw head fully. Here's one of my mine..

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[Guest]

And what do I do with it once extracted?

This could be good or bad news....maybe they were removed previously and properly -good:
or they have been attacked and mangled - bad.
Just like those pilot jets, you need to approach them carefully with a screwdriver that perfectly fits into the cave and spans the mixture screw head fully. Here's one of my mine..

[ATTACH=CONFIG]59091[/ATTACH]

[Steve]

The first thing you need to do is to realize that you will NOT see what is in the picture.

You will find a screw that is about 3/4" long and goes to a very sharp point. After you remove the screw, you might need to use a drywall screw to reach in and pull out a spring. When the spring is out, reach in again with the drywall screw to remove a very small metal washer and an o-ring. The goal is to replace the o-ring with a new one, but this should really be part of a FULL rebuild of the carb. Good thing you already have the carbs apart. You can now dip them properly and get the o-ring kit from cycleorings.com. This would also be a good time to recommend replacing the o-rings in the intake boots. Get them from cycleorings, too.

Are you following Nessism's carb rebuild tutorial?

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[Guest]

I already put it together and put it back on. My fiancee doesn't like the smell of gasoline inside, and I can't keep them outside without worry of them being lost or stolen. I'll have to take it off again to switch the pilot jets.

What would I do to adjust the air flow? I get the feeling there isn't enough air. When I put the carbs back on the first time, they weren't seated properly in the boots. There was a gap, and air got in. This caused the engine to rev high. After I seated them properly, it wouldn't start, not even if I sprayed gasoline into the carburetor through the airbox (even though that worked before).

[tom203]

Best to follow Nessism's tutorial and do the job properly or the smell of gas will be the least of your problems.

As Steve mentioned there's some little parts in there, so beware

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