Need Help! Fuel coming out exhaust on right side?

[Greggie-e]

have you changed the plugs?

what color is the defective side?

if it is not firing correctly then I guess fuel would come out the exhaust...

[e3steve]

2-3 days after bike floods itself and now will not start, am I doing something wrong or should I bring it back.

1. What colour is the affected plug? Sooty black or totally wet?
2. Is there fuel flooding from the carb breather/overflow (vents via the bottom of each float bowl) -- if yes, drop the bowl and squeeze the floats together to ensure that they don't bind on the bowl or on the gasket.

I bought a gasket kit and the exhaust gasket are the brass ones right

Copper ring seals to seal the head port to header pipe joint

and there are some rubber gasket same size ??

Sounds like the seal that goes between the header pipe and the muffler -- if your exhaust is a one-piece system then you don't need these. Black, 'sock'-type sleeve seals are for the very early ('61/'62) mufflers; the orange-red O-ring type are for the later 2-piece systems.

NB: your '67 bike should have the one-piece systems.

Try to keep us informed; you seem to post and then disappear!

[Jason76]

O.k Sorry for late replys, I am self employed and its hard to find the time somtimes. So I checked the spark plugs and they were wet and black, I thought that mechanic changed them but does'nt look like it so I changed them and the bike fired right up, seems to run fine but back fires a little on start up then seems to run fine after few mins. Is that normal on these bikes? About exhaust gaskets I had the wrong ones Thanks for reply guys.

[e3steve]

I know that self-employed feeling. I'm lucky enough to be separated, so I can play as long as I like!

Back-popping from the carbs is normal on twin carb models. There is a logical reason for this on our motors, which I've read but escapes me just now. I also seem to remember reading that it's only one side that back-pops(?).
EDIT: not once the motor is fully warmed.

What causes this phenomenon on a motor with an inlet manifold is the creation of water droplets on the inside of said manifold when it's cold, thus weakening the induction charge; water doesn't combust(!). You also may notice that an engine, once up to temp, performs so much better in fog or cold, damp weather; this is because the induction charge (air/fuel mix @ 14:1) is cooler, denser and thus combusts better. Yada yada yada....

[LOUD MOUSE]

Bike should not back fire no matter the reasons other than the pipes had some latent fuel and/or the timing isn't "right on" or the carbs/carb could use some tuning. Air plus fuel plus gas plus spark will cause an explosion and with the HONDA DREAM type engines the timing is most important and then ya adjust the carb/carbs. WATER?????????????????????. ...........lm

O.k Sorry for late replys, I am self employed and its hard to find the time somtimes. So I checked the spark plugs and they were wet and black, I thought that mechanic changed them but does'nt look like it so I changed them and the bike fired right up, seems to run fine but back fires a little on start up then seems to run fine after few mins. Is that normal on these bikes? About exhaust gaskets I had the wrong ones Thanks for reply guys.

[e3steve]

Bike should not back fire no matter the reasons other than the pipes had some latent fuel and/or the timing isn't "right on" or the carbs/carb could use some tuning.

I totally agree. But (getting defensive) I was referring to when cold, and you reduce choke, the motor (on a CB) will spit like a cornered ferral cat, especially when using more than ¼-throttle. If back-popping occurs when up to temp then there is, without doubt, a misadjustment. I can't comment on the single carb models, but do I remember my original CB77 did suffer this but my CA95 didn't.

With my current CB, my tuning is pretty close to spot-on (thanks to your method, Ed); the motor never falters, once warm, and the plugs are always a satisfying sandy tan. When less than full op-temp (I have to climb an incline out of my garage) it does spit, as I always have the choke fully off by that time but she ain't quite up to temp.

As for my witterings about inlet manifiolds on cold engines, I'm not referring to our machines; it's just an overview of the general cause of spitting phenomenon.

[LOUD MOUSE]

Did I say back fire???????????????. ...............lm

Bike should not back fire no matter the reasons other than the pipes had some latent fuel and/or the timing isn't "right on" or the carbs/carb could use some tuning. Air plus fuel plus gas plus spark will cause an explosion and with the HONDA DREAM type engines the timing is most important and then ya adjust the carb/carbs. WATER?????????????????????. ...........lm

O.k Sorry for late replys, I am self employed and its hard to find the time somtimes. So I checked the spark plugs and they were wet and black, I thought that mechanic changed them but does'nt look like it so I changed them and the bike fired right up, seems to run fine but back fires a little on start up then seems to run fine after few mins. Is that normal on these bikes? About exhaust gaskets I had the wrong ones Thanks for reply guys.