Engine vent hoses on a 66 CL77?

[eyedragaknee]

One coming from the top of the cam cover and 2 out of the back of the cylinder heads.

The one on top seems open as it will blow free through an open rocker inspection cover. Are the others under the carbs "timed" and how can you tell if they are open and working.

tks

[davomoto]

They are intake valve guide vents, and should have hoses run into a T and then to right air filter. Tou can unscrew them from the head, and check for blockage.

davomoto

[eyedragaknee]

If they were blocked, would that cause oil to grt on the plugs? Trying to rule out everything but rings first.

[davomoto]

I honestly don't know. Have you done a compression test?

davomoto

[eyedragaknee]

I'm sure it is going to need rings this winter. I'm just wanting to eliminate anything else that might be oiling the plugs so I can keep riding it for a while.

It'll run and idle and I can ride it without any hiccups. It just isn't as good as it can be and the plugs are too sooty.

[davomoto]

Could be a jetting issue? Are the slides in the correct carbs? There is a left and right, cut-out in slide should face to rear towards air filter.

davomoto

[e3steve]

Davo, mine are bloody linked! I mean, one to the other. Doesn't seem to cause any problems -- plugs are always a nice, sandy colour -- but, rather than teeing and taking to the right filter (CB77), could I not use the power-jet spigot on each filter?

Steve