carburetors

Okay, one more question here. 73 650 I purchased new petcocks as the old ones were just that, old. cracked, leaking etc.... My question, the old ones had a spacer between tank and petcock. Are they really needed?

I see a set of carbs on kijjiji , bs 34s from a xs400 . Anyone know if they could work on a 650 ? Thanks .

Hi all, The bike is running pretty good. I was looking under my carbs and noticed really on the left hand side (alternator side), that it looks like maybe an oil,fuel mixture is dripping from the bottom of the carb. I am slowing learning how to work on my bike and have really just messed...

Alright So I got my Vm34's on my 75 XS 650 and finally got my jetting down runs great so much faster more power! I do have an idle screw issue on the left carb, when ever I unscrew the idle screw there is absolutely:yikes: no change in idle, I even took it all the way out and no change. I know...

Hello! I've opened up the exhaust and filters, the bike has got pods and no mufflers. I've raised the needle two clips, and it seems to run pretty OK with that, but when it comes to which jets I should switch to, Im not quite sure. Any ideas? Also, then I try to time my ignition, my...

Hey guys, I just bought a 1977 xs650, something that is a bit different for me as I come from a sport bike background, and I have some questions I'm sure some of you can help me with. The story is this bike has been in a barn since 1987 and was sold with the intention to be a parts bike. The...

1978 xs650 pamco, PMA, cam chain good, timing good, valves good. .30 pilots, 145mains, slide needle 2nd notch... carbs were synced, if not very close, both plugs looked the same (good). I had a flat spot off idle (lean) and slight popping when cruising. floats were set too low (27mm):yikes: so I...

79 xs650 with bs38's. Do the fuel mix screws on the carbs have a spring on them between the screw and carb body? If so does anyone know where I can get two? Thanks!

Question for the carb specialists, When under full throttle I have a slight hesitation when changing gear, the bike is running slightly rich, would the hesitation be caused by too much fuel until the engine catches up or too little? whilst I realize I need a smaller main jet, I'm not sure which...

Hi I tryed to coat my new tank with Caswell tank sealer and I must have messed it up and not gotten a full coverage about a week after I reinstalled my tank I looked inside and the gas got in between the sealant and the tank wall. I was just wondering if I can run it like that or if it will...

I have a 77 engine with bs38 carbs and a 2 into 1. It also has a pamco and PMA setup. It runs good when just cruising around. Here is the issue. The problem occurs when I ride it hard. After I up shift and grab a bunch of throttle it gives off a burp sort of backfire but continues to...

I recently bought a 1977 xs650 and finally passed my motorcycle test and all that. But I went to start up the bike but when I turned the gas petcocks to ON gas started to just pour out from somewhere between the carbs. I'm new to this but I'm pretty sure that's not supposed to happen. There's...

I picked up an abandoned project on Craigslist and I'm a little stalled out on what appears to be a carb issue and a top end leak on the left side. Here are the problems I'm noticing and would greatly appreciate any advice y'all can pass along. A little background first, it's a 1972 with a...

MY 1981--/--650 was running a little rough last week. It had all the signs of needing a float height adjustment (from what I gathered), so I decided to spend the weekend fixing it. It started when I noticed gas leaking out of the left side carb (view from saddle) right where the float bowl...

I have spark, I have air, I have fuel. Carbs have been cleaned and rebuilt. Mikes xs rebuild kits, jets, air filters, valve lash and timing chain tension set. New petcock, inline fuel filter and fuel line. Carbs are clean! Did the diaphram test, it's in spec. IT goes, 'thump...

EDIT: Never mind, figured it out, DUH...

hi guys over the weekend i replaced my cv38 carbys after washing them,,, the bike is missing and coughing and carying on like a mungrol ,,, but i really think i,ll have to do a better job of cleaning my carbys so that it will run nicely ,,, any suggestion would be much appreciated remember...

hi guys over the weekend i replaced my cv38 carbys after washing them,,, the bike is missing and coughing and carying on like a mundgrol ,,, but i really think i,ll have to do a better job of cleaning my carbys so that it will run nicely ,,, any suggestion would be much appreciated remember...

Hi have a1976 xs standard. The bike stumbles under a load. The bike is stock air filters,pipes ,ign. This has been doing this for a while. Any help on where to start looking.Thanks

http://www.johnscycleparts.com/store/index.php?route=product/product&product_id=50 Stumbled upon this. Looks like it would work on our BS34s, but it's kind of spendy. Maybe a member can start making them, or maybe someone has a similar DIY idea.