Fair question .
Ive used propane listening for a rise in idle , and even watched
the tach from timing lite .
Ive yet to do that with a hot hot engine .
Ive Sprayed bottle water to see if it was drawing in.
Other than that , are there better methods . ?
I paid a lot of attention to the outboard pod
Connection to bodies .
Just because , ive done the suck test on the outboards tee hose.
They do open in unison with kill bleeds plugged or not .
This is irrelevant kind of , because i know they open.
I think ive been thorough or im missing a better
More accurate method .
Those things you did/checked have no bearing on the outboard carbs opening. A leak in any part of the outboard carb vacuum system would go completely undetected with what you did.
Do you have the 69 carbs as Lew asked?
Not only do they have the larger kill-bleed like Lew mentioned, the outboard throttle plates can stick in the throttle bores as mentioned, particularly in the 69 carbs. Also as mentioned, over torquing the base plate can cause binding. You can simply check these by hand with the engine off.
Yes they are 69 1/2 carbs
Hoses
Nipples
Connections to main body
Seal between carb and pod have been gone through
Note, and this particular set of carbs have been
Gone through by maxwgn
Please elaborate on a more specific independent
vacuum test on the outboard components and your suggestion .
I was assuming you thought a poor base seal or
Other would/might cause this issue .. thus the propane test .
If there is a method , lmk .
