On the charcoal canister. Look at the small elbow hose on the tank, it's probably torn.
And you can try swapping the hoses on the top of the canister to see if it helps, it often does.(my 60 has been like that for a few years now,)
ICS....the failure point is normally inside the emission computer, not the ICS itself. By grounding it to the carb, you bypass the computer. The ICS grounds/switches in the computer, the old soldered joints goes bad at about 30 years.
There is also an o ring on the ICS that may be gone/torn...not sure what issues it would cause but it's something to check.
And you can try swapping the hoses on the top of the canister to see if it helps, it often does.(my 60 has been like that for a few years now,)
ICS....the failure point is normally inside the emission computer, not the ICS itself. By grounding it to the carb, you bypass the computer. The ICS grounds/switches in the computer, the old soldered joints goes bad at about 30 years.
There is also an o ring on the ICS that may be gone/torn...not sure what issues it would cause but it's something to check.