carb

Hello again everyone, I greatly appreciate the help this forum gives me, and I am having a blast exploring this bike. Now I need some more pointers, in my case some good quality vendors for these carb parts. So, I believe I have discovered the source of my gasoline leakage out of my carb air...

I recently acquired a 1975 XX650 and it came with some issues, as well as a couple Rubbermaid bins of things and a whack load of carbs. Like 10 plus the two on the bike, all of varying condition and levels of neglect. The ones on the bike definitely need some minding and what I was hoping to...

Hello all! First post on here so bare with me. I have done some research into acquiring a very specific part, the #135 throttle plate, on the BS series Mikuni carbs and have come up short. I've read many posts of people looking for one only to be told that they no are longer manufactured and to...

Stock 1982 XS650, putting it into a buggy I'm building, stock engine, other than exhaust. I've been digging into carbs, as the ones that were on the bike when I got it aren't any good anymore. Anyway, lots of information out there, but there are gaps and missing info. So here are the carbs I was...

Two questions! First off what does it mean if when I give the bike gas it revs but takes a while to rev down. I heard that it could be a lean mixture Second, I'm working on installing a digital speedometer/tachometer. I have most of it working at this point but it states that you need to connect...

Hope everyone is doing well. I need help, in more ways then one, lol. I am just finishing a total build on my XS2 and am having an issue I have never had in owning and working on these bikes since 71. Bike has all new ignition, dwell set to spec, timing on spec, advance on spec. Charging system...

so i get the bike up to speed about 3rd or 4th gear and when down shifting i loose power and the bike dies. It is short and abrupt. almost like a clogged carb issue. i took them off to clean them and there was some gunk in them i recently cleaned out my tank and there was a lot of crud in it...

Getting to the finishing touches on my bike and am unsure what carbs these are off of

I am working on a 1970 xs1 650's carbs, and I've run into a little problem. I can find the kits for em, but none have the diaphragm I need. Anyone know where to find that? I looked on partzilla, and they are "unavailable". Part number is 256-14916-19-00. Any help would be greatly appreciated.

Alright I need to do something. This 2-into-1 turnout I have sounds like absolute s***, and either the baffle is completely rotted, or it never had one to start with. Either way it’s not a serviceable part, so it’s junk. I’m thinking of going back to stock headers (Anyone got a relatively-clean...

My carbs are in rough shape and I bought a pair of Mikuni style flat slide carbs (same size as OEM) that I want to eventually swap onto the bike. I'm wondering if anybody has any idea what would be a good jet size to start out with to make tuning slightly less painful. My engine is stock. Thanks!

Hello, Yesterday I was going for a gentle ride. After a break, all of a sudden, applying the throttle caused it to cough and thump. More gas, more thumping, too much and it would stall. Eventually, it wouldn't start. In the video, I'm using a tiny amount of throttle. No choke. Recently, the...

I have these 90 degree connectors on my carbs. The bike is an X1 1971 but the Mikunis seems to be the ones used on the X2, I compared the numbers on jets/seats etc. with the rebuild kits on Heiden tuning ( I live in Sweden so Netherlands are the closest retailer). These little guys seems...

From what i heard, the 1976-77 bs38's dont have an o-ring and little washer against that sping on the pilot? Im having a problem where the bike hesitates and breaks up down low when its accelerating. I noticed the pilots looks like they had a tiny bit of gas around them as i was trying to adjust...

Hey forum'ers, I recently bought a non-running 1980 XS650 and have been bringing it back to life. First of all I want to say that this place has been extremely helpful for getting informed on all aspects of the bike, and most problems I've encountered there is usually a thread with great advice...

So I’ve been having some carb trouble - I think I’ve finally got it sorted out, ridiculously high idle, replaced the diaphragms/slides - and I took my carbs apart yesterday... You know that rubber piece that goes in under the pilot jet? Well after I drained my carb, it was all swollen. Why is...

I am trying to diagnose a strange new backfire/stumble issue i have Specs: 1981 XS650 SH with Ganzo Box ignition BP7ES plugs 0.035" gaping High output coil from Mikes Carbs are well synced Stock air boxes Stock jetting (i believe) Was running with no issue on a PAMCO before the Ganzo...

So I'm at the point of tuning my '71 XB1. I was getting a popping exhaust on the left (sooty, dry). I fiddled with the ignition (Pamco) and got a pretty decent idle. However it would eventually slop out and die. I checked my coil, my plug leads, my plugs. All good connections. Plugs are...

Hello everyone. I've made a couple posts on here but I'm stuck again! I have a 79 special with b38 carbs and I was having issues with the engine breaking up between 2k and 3k (pods and no baffles) which was solved by adjusting my needle level to give me a bit more fuel (already replaced MJ and...

Hey everyone! I'm new to this whole community a appreciate the amount of help I've gotten. I'm currently putting a 79 back together and I'm to the test drive point if things. The bike idles great, and revs out normal sitting, but on the street it seems to break up under 3k rpms then run...