Frustrated!!!

[WMarshy]

If you have an 80G, which is the standard model, you never had an OCTY. The vacuum valve is built into each petcock on the Standard models. The Special models...the SG have the OCTY.

I always trim my carb bowl gasket on the sides to be exactly the edge of the carb bowl. No overhang for the float to catch on. But if it took that much pressure to stop the flow of gas, the valve could be defective.

Maybe wrong float needles? Where you get them from?

[DGXSER]

Only thought on that is he only has one that leaks. Pretty unusual to get one out of four wrong, and if they were alll wrong they would all leak. Worth looking at if you got it open, but not likely.

[cywelchjr]

Only thought on that is he only has one that leaks. Pretty unusual to get one out of four wrong, and if they were alll wrong they would all leak. Worth looking at if you got it open, but not likely.

More likely something IN that needle valve, like a chunk of rust or rubber blocking the thing from sealing and needing a lot of pressure to get it to seal enough to stop gas flow. Sounds to me like that valve and seat need to come out anyways, but I agree it's not likely to be the wrong valve or seat, more likely a damaged one of something interfering with it.

[mack]

Same problem

Not long ago I a similar issue. Finally figured out that the viton tip had a deep circular crease in it where is meet the hole shoulders in the seat. Couldn't seal properly at all. Low float level I believe caused it. Anyway, I changed it out with a new on and haven't had an issue since.

[JoesN68]

Update.

The new float and needle valve should be here today. I will get it installed after work. I removed the carbs and opened up the float bowls. Removed gasket material to the edge of the carb body just to make sure.
What is the best way to route all the carb hoses? They seem like a huge PITA each time I have to connect them.

[JoesN68]

Got the new parts. installed them. It seems to match the other carbs action much better. I decided to check the octy out. Not good. port 3&4 and 1&2 are xonnected whther i blow through them, create vacuum on them or if i do the same to the vacuum line to the octy.
So I can run a hose from the front petcock nipple to both petcocks and run the aft nipple to the respective
"T"s on the carbs? I need to cap off the vacuum lime to the octy of course. Is this correct or am I missing something?

[JoesN68]

what would be the best routing if i placed an inline filter between the petcocks and carb "T"s? would it be feasible to route the right petcock to the left carb "T" and vice versus?
If all goes well I could be riding by the weekend! WOO HOO!

[jetmechmarty]

would it be feasible to route the right petcock to the left carb "T" and vice versus?

That's how I did it. Then I placed the filters just above the Tee on each side. I used Visu Filters.