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I haven't adjusted my valved yet. I checked the clearances about 2 months ago and they seemed fine, although that might not be the case anymore. Should that be the first thing I check?

I decided to start a new thread because the previous posts on my last thread were a bit misleading- So my bike would at first start to die when I put it in gear and would have to feather the throttle to keep it alive (would idle fine in neutral). Furthermore, I would have to rev super high to...

also just as extra info, I'm running straight pipes with pod filters (it's the way i bought it) with 145 mains and 45 pilot. I have the fuel mixture 3.5 turns out. My plugs are weird because half of it is usually blackish and sooty and the other half is a whiter tone.

it almost feels as though the bike is stalling once i put it into gear if that gives a better visualization. also the day the bike really went bad, it would keep trying to die on me when i let go of the throttle. it still had the similar-to-stalling symptoms and so I just kept holding the...

yup always used the choke to start the bike cold I verified the carb syncing, vacuum leaks, pilot jetting(through the fuel mixture screws on top of the manifolds), and put a direct fuel line the bike doesn't idle super high anymore, but I still have the weird issue of the bike idling fine and...

hm ok, the bike was perfectly fine before that one day so I'm hoping that the jetting isn't the problem. The weather did get significantly colder (about 20 degrees) in that week so that could be affecting something? I'll recheck for airlocks and make sure my points are okay.

My xs400 was running perfectly fine and then just one day it started bogging every now and then. I replaced the fuel filter because it was super gunked and then added clamps and it seems that the fuel isn't running quite as freely as it was before, so I am planning on just putting a straight...

just to make sure, my kill switch functions as both ignition and kill switch and was checking in to make sure that wouldnt cause any issues

yep the rectifier wire sorry about that. wouldn't that constantly provide power to the rectifier then? either way I'll try it out because I know no better and once again thanks for the help!

so it goes from top to bottom( nearest to screw to nearest to switch) 1.double red, ignition coils) 2. red, lights 3. black stator wire (this is actually correct, it isn't a ground) 4.striped red, cdi 5. voltage regulator brown wire 6. red, regulator wire this is all before the switch...

also yes, the red cdi wire is also on the positive side

I have a weird wiring job going on. As you can see, there are the lights, the brown wire from the voltage reg, the black stator wire, the coils all on one side of the killswitch and a fuse on the other going to the battery positive. The problem that I'm facing is that 1) I can't kill the bike...

in case anyone else was wondering, it seems that the frame is 7/8" throughout and the part that goes to the rear wheel is 1-1/4"

I have an xs400 81 SOHC and was wondering which bolt on peg diameter I should buy. The original passenger peg mounts have been chopped off, but the frame is still an xs400 frame. i have the option of choosing 1",1 1/8", and 1 1/4". I'm not exactly sure, but I think it should be 1"?

I don't know exactly how to describe it, but it is the thing that closes the carb sync vacuum nipples. It is the thing you have to take off in order to put the hoses into the intake manifold in order to carb sync. Previous owner must have lost it so I bought a new intake manifold set but they...

thanks for the reply chris. I'm planning on doing yet another ultrasonic carb clean, putting slightly bigger jets (running 137.5 with pods and straight pipes and I think I'll try using 145s and see just how rich they are), changing the spark plugs, and syncing the carbs. However, I'm not sure...

This starts way back. I've tried quite a bit of things and it seems to only make things worse because of my bad methods. So I first had idling issues and hanging throttle issues. I couldn't hold an idle for longer than 3-5mins continuously and my throttle would hang for about 4 seconds even...

I'm trying to adjust my float height on a 81 heritage xs400 (SOHC) Which tab am i supposed to fool around with to get back to normal? There is tab that is right above the float pin that I have screwed around with and now the minimum float height is much higher. Furthermore, the brass tang for...

I thought I might share this for anyone out there having a hard time with their valve adjustment- I plan on using it myself in about 2 weeks and reporting back : ) apparently it works for non hydraulic valve designs and it seems like it should work for an xs400. This would work on SOHC models...

Also just to make sure again. Is the black wire from the stator supposed to connect to the brown wire from the voltage regulator as shown in the diagram? My friend and i discussed this and felt as though someone who has already worked on these would know best. This xs is a sorta ratty bike so we...