checking and setting carb float hight????

[SiiCHo]

as far as doing a plug chop goes, its going to have to wait until i get it idling right. i live in a pretty residential area, and i cant just rip down the streets, i have to haul it to the dunes to be able to ride it. either way, im done for the day. i think i had the cops called on me once today for noise, i imagine. i had shut it down and was standing out front of the garage smoking a cigarette, they rolled by and slowed down in front of my house with their windows down. right after passing my place, the windows went up and they sped up. nothing came of it, but i dont need that.

[barnett468]

Hello


I would do the following, others would not

Set x screw to 1 3/4 for now.

If it starts easily with 0 choke when engine is cold and it is 75 degrees outside or more the pilot is too large, install next size smaller and try again.

If it requires full choke with cold eng and 75 or more degrees then pilot is too small, go up 1 size and try again.

If it burbles upon acceleration when opening throttle only 1/4 way from low speed then pilot is too large, go down 1 and try again.

If it simply hesitates with no burbling then it is lean, install 1 size larger pilot.

Set mix screw to best idle when done.

[barnett468]

Post correction


X SHOULD BE MIX.


I have no edit button.

[SiiCHo]

everyone talks about 0 choke or full choke, am i missing something? all the keihin carbs ive ever worked on, the choke is on or off, no in-between

[barnett468]

Hello


Most may be this way now, it wasn't always.

You can only do a fully closed or fully open test on ytour particular carb then, but the riding test will help confirm the choke test. The riding test is most important.

[barnett468]

Hello DasUberKraut



Vie ghets!

Is there a link for this method? I'm tired of dumping gas trying to figure this out.

Is this what you are looking for?


GAS LEVEL TEST – If your gas level is low in the float bowl then your carb will be lean. Install clear plastic tube on bowl drain, hold open end of tube level with top of carb and open bowl drain valve. The gas will flow into the tube. It should be from level to 3/16" below the bottom of the carb body where it meets the bowl. If it is incorrect then adjust float accordingly.

[SiiCHo]

Ok, so now that ive sat down and thought about it, i think i may have to go back up a size or 2 on my pilot. With the 48 i have to have the idle adjust almost all the way out. On the carb i have, the idle adjust just moves the choke, so running it all the way out is the same as having the choke pulled all the way up. Once its screwed out, you cant even pull the choke. If im thinking right, this means it is too lean, and needs more gas. Also i have almost no smoke out the exhaust. With the old 30 mm it billowed blue smoke, and it had a 50 pilot. Ill admit that on the first go, with the stock jetting, i forgot to set the mix screw, and that may be why it wouldnt idle. I think im just going to start from scratch tomorrow, and put it back to stock and try again.

[barnett468]

Hello


Blue smoke is excessive oil, not a rich condition, it can come from a bad crank seal on the clutch side or a rich oil fuel mix.


I don't know about a fuel mix screw moving the choke.

[DasUberKraut]

Hello DasUberKraut



Vie ghets!

Is there a link for this method? I'm tired of dumping gas trying to figure this out.

Is this what you are looking for?


GAS LEVEL TEST – If your gas level is low in the float bowl then your carb will be lean. Install clear plastic tube on bowl drain, hold open end of tube level with top of carb and open bowl drain valve. The gas will flow into the tube. It should be from level to 3/16" below the bottom of the carb body where it meets the bowl. If it is incorrect then adjust float accordingly.

Thanks barnett. I no longer speak German. Back in high school I was almost fluent. But I am ok. To answer your question.

Thanks for the description of the test. Hopefully someone would want to make a quick vid of this being done... I can picture it in my head to a degree. But it's not making sense.

[SiiCHo]

Not the mix screw, the idle adjust...

Here is the idle adjust/choke, notice the markings


And here is the mix screw


And as far as i know, on a 2 stroke, excessive blue smoke is rich. Im running it 32:1. It doesnt lose oil, so its safe to say im not leaking oil into the crank case. And if it were, the reed cage would be covered in oil, which its not.

[barnett468]

Hello siCHo

Not the mix screw, the idle adjust...Here is the idle adjust/choke, notice the markings

Thanks, but I know which is which. You are supposed to turn the mix screw out 1 3/4 out from 0 NOT the throttle stop screw. This is one of the reasons why you can't get it to work.

And as far as i know, on a 2 stroke, excessive blue smoke is rich.

Sorry, but in my years of doing this including with factory teams and being head of Kawi R and D and studying fuels for years, that is absolutely wrong. Others opinions will vary. Go throw a match in a shot glass full of gas and then come back and tell me what color the smoke was. If you want to jet it by the amount of blue exhaust smoke that comes out of your tail pipe then I can no longer help you, sorry.

Im running it 32:1. It doesnt lose oil, so its safe to say im not leaking oil into the crank case. And if it were, the reed cage would be covered in oil, which its not.

It could have just started one never knows unless they pressure test for it. It would take a while for it to noticeably drop the oil level.

What oil is it exactly?

[barnett468]

Thanks barnett. I no longer speak German. Back in high school I was almost fluent. But I am ok. To answer your question.

Thanks for the description of the test. Hopefully someone would want to make a quick vid of this being done... I can picture it in my head to a degree. But it's not making sense.

You're welcome, if you follow the easy to follow instructions it will make sense, lol. It is better to see it done though.

[SiiCHo]

Hello siCHo

Thanks, but I know which is which. You are supposed to turn the mix screw out 1 3/4 out from 0 NOT the throttle stop screw. This is one of the reasons why you can't get it to work.

What oil is it exactly?

Im aware which screw to turn. In your previous post, you said you didnt know about a mix screw affecting the choke. You may have mis-spoken, i posted pics for clarification. Like you, this isnt my first rodeo working on something. I grew up working on small engines, atvs, snowmobile, dirtbikes, cars, and trucks. Ive spent the last 8 years working on helicopters. I currently work as a mechanic on the v22 osprey, one of the most advanced aircraft in the world. I appreciate advice, but every 2 stoke i have ever seen blows blue smoke. Yes if you light mixed fuel in a shot glass it will smoke black. When a 4 stroke is rich, it will blow black smoke, as will a diesel. My weed trimmer blows blue smoke and i mix it 60:1, this tells me its not excessive oil.

Right now im running 91 pump gas mixed with lucas 2stroke oil. When i bought the trike, the guy gave me a half bottle of the stuff. I have a bottle of maxima castor 2 stroke oil i will be switching to once the lucas is gone. I have never had issues with a carb like im having with this one. Like a said earlier, im just going to start from scratch tomorrow and try again. Ive gone through the factory service manual, and the clymer manual i have, and have followed them to the letter. I think ijumped the gun on dropping jet sizes.

[fastatc70]

Im aware which screw to turn. In your previous post, you said you didnt know about a mix screw affecting the choke. You may have mis-spoken, i posted pics for clarification. Like you, this isnt my first rodeo working on something. I grew up working on small engines, atvs, snowmobile, dirtbikes, cars, and trucks. Ive spent the last 8 years working on helicopters. I currently work as a mechanic on the v22 osprey, one of the most advanced aircraft in the world. I appreciate advice, but every 2 stoke i have ever seen blows blue smoke. Yes if you light mixed fuel in a shot glass it will smoke black. When a 4 stroke is rich, it will blow black smoke, as will a diesel. My weed trimmer blows blue smoke and i mix it 60:1, this tells me its not excessive oil.

Right now im running 91 pump gas mixed with lucas 2stroke oil. When i bought the trike, the guy gave me a half bottle of the stuff. I have a bottle of maxima castor 2 stroke oil i will be switching to once the lucas is gone. I have never had issues with a carb like im having with this one. Like a said earlier, im just going to start from scratch tomorrow and try again. Ive gone through the factory service manual, and the clymer manual i have, and have followed them to the letter. I think ijumped the gun on dropping jet sizes.

If you are having idle problems I would start with a leak down test. If you have a clymer manual they explain how to do the test. An air leak will cause all sorts of problems that look like carb problem and a funny idle.

[SiiCHo]

Ok so i got it to idle, pilot 50, main 152, and the clip at the top. Im about 2 turns out on the mix screw, but she idles at 1300 on the money. However, i do have a blown head gasket. With all the messing with it, some spooge started to form where the head meets the jug, with a flashlight and the engine running, i can see tiny bubbles coming from the head gasket. Luckily i have a spare gasket. I just need to get some copper spray. Anybody know if there is clearance to pull the head with the engine in the frame, or will i have to pull the whole motor? It looks like it may be close. For the motor only having 6 hours on it, it tells me it wasnt put together right. No surprise there, the whole trike was ghetto rigged when i bought it, but it ran well, until the stock carb broke.