'70 distributor and carb

[Mercury Mike]

I've got a bud with a 1970 Maverick, Carter carb, and stock distributor. As long as he's had it, there's never been a vacuum line from the distributor to the carb. Is there supposed to be? It runs rough sometimes, but sometimes it doesn't. Thought that might be something.

 

[Bort62]

Well, AFAIK there should be a vac line from the distributor to some sort of vacuum source for the vac advance...

 

[fordconvert]

The only dizzys I have ever seen without vac advance on them (till the 80's when they went to electric spark control) was on marine and industral equipment like tractors.

 

[CZLN6]

Howdy Back:

Yes, the '70 distributor is designed to help the engine run more smoothly and economically with a ported vacuum source from the carb to the distributor.

There may be a reason that the hose is not there. If the diaphram in the canister is cracked, it would cause a full time vacuum leak. A privious owner may have chosen to simply disconnect and plug the vacuum port on the carb. Check it out.

Adios, David