I have owned 2 Sportsters. If you do get a new exhaust and air cleaner you don't need to mess with the jets. Just remove the plug covering the air fuel mixture screw and tune the carburetor. You might need to back the screw put a quarter to a half a turn, but that's it. If you start by up sizing your pilot jet you won't get the full potential out of your bike. The 88 needle fixes the carb farts. You want a smooth steady climb in the rpms. If you run it rich you will have a plateau in exceleration and more vibration throughout the bike. This is especially true for rigid mount Sportsters.
Not sure what last owner did but my bike sat for two years when I bought it I cleaned whole carburetor and fixed few things now I’m back firing out my carb and can’t run without choke any idea? Plugs are black to
Don, my 98 xlc 883 is configured as you said, but even at 3.5 turns out it still coughs and stutters at the lowest opening of the throttle. I have to roll into the throttle very intentionally to avoid this cough. I am at a loss
I'm working on a bike of a gentleman who passed on. He has a 2000 fxdx HD. The cam size is .625. it sounds amazingly nasty and ready to eat the pavement. However. The carb was jetted however he did so. 220 main jet and a 45 pilot. It tends to cough randomly so I did proper adjustments and the cough was minimized. Upgraded to a 48 pilot and much less cough. However while riding in 2nd or 3rd it tended to drag a little so I'm pondering upgrading to a 50 pilot in order to relieve that city rising stumble. Your thoughts....
How do you tell if you need to go up or down in jet size? I have a dual carb set up, and the bike stroggles in wide open throttle. Im at 5600 ft elevation I opened up my bike to breath better, both on intake and exhaust end. I have taken the carbs off several times now trying to fix, can not figure this issue out.
Hi CC I have a Mikuni BS 33 cv carb. on a 1986 Yamaha Maxim x liquid cooled. I can get good idle, soon as I touch the throttle it starts screaming. 5k for a while then tames down to low idle and then shuts off. I turn idle mixture jets closed completely and it stills runs, where is the fuel coming from? Enricher circuit? Round slides don't seem to be moving, at that throttle position, I have aircleaner and air box off to see whats going on. Any help, on this.
My man thanks so much for that breakdown!! And I’m subscribed now 🤘🏼. I have a 97’FXDL -Andrews EV27,upgraded bearings S&S metal oil breather gear ,S&S adjustable pushrods , velocity stack with high flow filter, two and one hooker exhaust & upgraded to single fire, ignition and coil(I believe “Ultima”) i’m having problems jetting mine. What do you think I should start with for both jets? Thanks. You guys rock.
I have a 73 cb350 with a cv carb. It seams like its running very rich because when it trying to idle it wont rev unless i take the carburetor off a little bit. To me this leans out the mixture but let me know what you think😊
I changed my camshaft on my evo big twin FLSTN 1993 from Stock to Andrew’s ev13 I replaced intake manifold seals and they are tested and good. My problem is the following, I have a slow jet of 40 but looks bigger than a 42 I adjust the mixture screw counter clockwise 1 1/2 turns but the rpm goes down a little “not optimal mixture? “ I close the screw all the way and the idle speeds up “better mixture?” but here is the catch the throttle response sucks bike spits up and tries to die when applying throttle, when I unscrew and put 1 and 3/4 turns the idle goes a little down but the throttle response is way better can you tell me why is this ? Do I need bigger or smaller jet ? Is it because the size 40 jet perhaps is faulty fuel hole bigger than it should compared to the side holes ?
On my 99 FLSTC I have a 46 slow and 195 main. 3 turns out. EVL 3020 cam, screamin eagle 2 slip ons, k&n open breather, and external breather catch can. 10:1 wiseco pistons. Before the pistons and cam it had 45 slow, 185 main, 2.5 turns out. I think you need to go up in size on jets
Any help would be greatly appreciated I have a 83 Suzuki gs550l with the Dual CV carburetors and I am having issue of runaway it idles at cold start up somewhat okay A little choppy but okay but when cold if you give it some throttle it just runs away at 5000 RPM Full Throttle the cable is not sticking, I have adjusted the idle screw in the middle till it wasn't even touching the throttle linkage anymore so it's not that but as it warms up if you start it it just goes straight to 5000 RPM I'm going to double-check a few things this weekend before I take it out and tear it apart but just wanted to see if somebody knew what could cause that in this type of carburetor I was told recently to clean the Jets which I do plan on doing but I just don't think that's it and yes this bike does have a vacuum petcock which one of the things I'm going to check is to make sure everything is tight on the vacuum lines just in case that's it but when it idles real high I can use the choke as a somewhat throttle at half choked it calms somewhat down at close to full choke it dies I've been doing a lot of research over the last week even going through the owner's manual and service manual I bought for this like and I have a few ideas of what it could be but wanted to see if somebody on here have a lot more experience than I do with this type of carburetor oh, I already got a hold of the manufacturer that makes the carburetor and they said Jets as well but to me it's just not making sense why the Jets if they were clogged the bike wouldn't run right or run that high, also each carburetor from the looks of it has two adjusting screws so are those two idle screws because each carburetor has 2 butterfly valve in it so should I treat youth carburetor as two carburetors?
And the last 7 owners did all that and found the bike only runs ok on hot days. The first owner fitted cams and a non vented fuel cap. Make one one change at a time unless you know what you are doing. Get a second opinion and don't assume anything.
![Lp. Сердце Вселенной #60 РОЖДЕНИЕ ЛОЛОЛОШКИ [Финал] • Майнкрафт](http://i.ytimg.com/vi/YoR0pAV9FVQ/mqdefault.jpg)
I have owned 2 Sportsters. If you do get a new exhaust and air cleaner you don't need to mess with the jets. Just remove the plug covering the air fuel mixture screw and tune the carburetor. You might need to back the screw put a quarter to a half a turn, but that's it. If you start by up sizing your pilot jet you won't get the full potential out of your bike. The 88 needle fixes the carb farts. You want a smooth steady climb in the rpms. If you run it rich you will have a plateau in exceleration and more vibration throughout the bike. This is especially true for rigid mount Sportsters.
Not sure what last owner did but my bike sat for two years when I bought it I cleaned whole carburetor and fixed few things now I’m back firing out my carb and can’t run without choke any idea? Plugs are black to
@@DuckyHitsBills did you completely rebuild the carb? Did you use a carb kit?
@@DonTgurdy1488 yes I used all new parts and I’ve swapped back to stock parts after cleaning
@@DuckyHitsBills Check intake seals causing a lean condition. If it was a diaphragm leak it would die under any throttle.
Don, my 98 xlc 883 is configured as you said, but even at 3.5 turns out it still coughs and stutters at the lowest opening of the throttle. I have to roll into the throttle very intentionally to avoid this cough. I am at a loss
This is the best CV tuning video I’ve seen. Thank you.
Great explanation on cv carb, great video
I'm working on a bike of a gentleman who passed on. He has a 2000 fxdx HD. The cam size is .625. it sounds amazingly nasty and ready to eat the pavement. However. The carb was jetted however he did so. 220 main jet and a 45 pilot. It tends to cough randomly so I did proper adjustments and the cough was minimized. Upgraded to a 48 pilot and much less cough. However while riding in 2nd or 3rd it tended to drag a little so I'm pondering upgrading to a 50 pilot in order to relieve that city rising stumble. Your thoughts....
How do you tell if you need to go up or down in jet size? I have a dual carb set up, and the bike stroggles in wide open throttle. Im at 5600 ft elevation I opened up my bike to breath better, both on intake and exhaust end. I have taken the carbs off several times now trying to fix, can not figure this issue out.
I'm installing the S&S 100ci kit with 585 cams on my 04 FXD. I run a CV carb. What jets would you recommend?
Hi CC I have a Mikuni BS 33 cv carb. on a 1986 Yamaha Maxim x liquid cooled. I can get good idle, soon as I touch the throttle it starts screaming. 5k for a while then tames down to low idle and then shuts off. I turn idle mixture jets closed completely and it stills runs, where is the fuel coming from? Enricher circuit? Round slides don't seem to be moving, at that throttle position, I have aircleaner and air box off to see whats going on. Any help, on this.
My man thanks so much for that breakdown!! And I’m subscribed now 🤘🏼.
I have a 97’FXDL -Andrews EV27,upgraded bearings S&S metal oil breather gear ,S&S adjustable pushrods , velocity stack with high flow filter, two and one hooker exhaust & upgraded to single fire, ignition and coil(I believe “Ultima”) i’m having problems jetting mine. What do you think I should start with for both jets? Thanks. You guys rock.
Sorry, I do have CV card on her and upgraded most of the parts in it
Very helpful video Thank you
I have a 73 cb350 with a cv carb. It seams like its running very rich because when it trying to idle it wont rev unless i take the carburetor off a little bit. To me this leans out the mixture but let me know what you think😊
bro my fuucking emulsion tube wont seat right any tips
I changed my camshaft on my evo big twin FLSTN 1993 from Stock to Andrew’s ev13 I replaced intake manifold seals and they are tested and good. My problem is the following, I have a slow jet of 40 but looks bigger than a 42 I adjust the mixture screw counter clockwise 1 1/2 turns but the rpm goes down a little “not optimal mixture? “ I close the screw all the way and the idle speeds up “better mixture?” but here is the catch the throttle response sucks bike spits up and tries to die when applying throttle, when I unscrew and put 1 and 3/4 turns the idle goes a little down but the throttle response is way better can you tell me why is this ? Do I need bigger or smaller jet ? Is it because the size 40 jet perhaps is faulty fuel hole bigger than it should compared to the side holes ?
I feel like a big twin would be using a bigger jet than my 883 sporty and I have a 42 in there
On my 99 FLSTC I have a 46 slow and 195 main. 3 turns out. EVL 3020 cam, screamin eagle 2 slip ons, k&n open breather, and external breather catch can. 10:1 wiseco pistons. Before the pistons and cam it had 45 slow, 185 main, 2.5 turns out. I think you need to go up in size on jets
Very good information! Subscribed 👍🏽
Details. Love it. 🤟💯
Any help would be greatly appreciated I have a 83 Suzuki gs550l with the Dual CV carburetors and I am having issue of runaway it idles at cold start up somewhat okay A little choppy but okay but when cold if you give it some throttle it just runs away at 5000 RPM Full Throttle the cable is not sticking, I have adjusted the idle screw in the middle till it wasn't even touching the throttle linkage anymore so it's not that but as it warms up if you start it it just goes straight to 5000 RPM I'm going to double-check a few things this weekend before I take it out and tear it apart but just wanted to see if somebody knew what could cause that in this type of carburetor I was told recently to clean the Jets which I do plan on doing but I just don't think that's it and yes this bike does have a vacuum petcock which one of the things I'm going to check is to make sure everything is tight on the vacuum lines just in case that's it but when it idles real high I can use the choke as a somewhat throttle at half choked it calms somewhat down at close to full choke it dies I've been doing a lot of research over the last week even going through the owner's manual and service manual I bought for this like and I have a few ideas of what it could be but wanted to see if somebody on here have a lot more experience than I do with this type of carburetor oh, I already got a hold of the manufacturer that makes the carburetor and they said Jets as well but to me it's just not making sense why the Jets if they were clogged the bike wouldn't run right or run that high, also each carburetor from the looks of it has two adjusting screws so are those two idle screws because each carburetor has 2 butterfly valve in it so should I treat youth carburetor as two carburetors?
hi did you get your problems fixed?
Best way to tune a CV carb is to throw it in the trash, and buy a PWK flat slide carb 😁
And the last 7 owners did all that and found the bike only runs ok on hot days.
The first owner fitted cams and a non vented fuel cap.
Make one one change at a time unless you know what you are doing.
Get a second opinion and don't assume anything.
should have demonstrated while talking