vacum hose question

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Jun 23, 2013 | 06:37 AM

luv2ski

Thread Starter

5th Wheeling

Joined: Feb 2012

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vacum hose question

My 390 distributor has 2 connections.The front one is going to carb "front as is closest to radiator.Second on is going no where the is no nipple to be found.

Truck seems ok except for a backfire issue on hot days,runs fine ,idles fine,starts fine.
do i have correct distributor ?

Jun 23, 2013 | 06:34 PM

NumberDummy

Ford Parts Specialist

Joined: Nov 2006

Posts: 88,826

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From: Simi Valley, CA

Dizzy ID number is located on a tag (probably missing) and stamped on the base. Post what it is.

Jun 23, 2013 | 06:40 PM

2500ak

Senior User

Joined: Nov 2007

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Quote:

Originally Posted by luv2ski

Second on is going no where the is no nipple to be found.

I don't quite understand what you mean here. Do you mean there is a vac line coming off the dist that doesn't connect to anything?

Jun 23, 2013 | 06:42 PM

NumberDummy

Ford Parts Specialist

Joined: Nov 2006

Posts: 88,826

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From: Simi Valley, CA

I know what the OP is speaking about inre to two connections, that's why I asked for the dizzy ID number.

Jun 23, 2013 | 06:50 PM

2500ak

Senior User

Joined: Nov 2007

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Here's an old picture of what the dist on my FE looks like I'd get a better one but I keep that truck at my grandma's for when I fly up to visit her now.

Can't say if it's the original dist though.

Jun 23, 2013 | 07:08 PM

NumberDummy

Ford Parts Specialist

Joined: Nov 2006

Posts: 88,826

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From: Simi Valley, CA

Introduced in 1971 F100/350 (1967 cars), 12A091 Type 2 vacuum control valve installed. Some people removed the vacuum hoses, capped off the nipples they connected to.

Attached Images

Jun 23, 2013 | 07:25 PM

montana_highboy

Post Fiend

Joined: Apr 2008

Posts: 8,261

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From: Big Sky Country

Those were smog era dizzys, they had both advance and retard canisters....they were "retarded" to say the least (no pun intended)....

Ditch it and get a single can dizzy.