Tried it all!!!
Laughing Gas
Joined: Mar 2013
Posts: 1,027
Likes: 5
From: Garner NC
Sounds like you do not have enough vacuum. There can be several reasons for this including a lack of flatness in the bottom of the carb or in either side of the spacer. First measure your vacuum at idle.
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Junior User
Joined: Aug 2014
Posts: 63
Likes: 0
Again. Funny you say that. Just got done putting the vacuum guadge on it. At idle it's reading 10. When I give it gas it jumps to 15. If I'm not mistaken it should read zero until I give her gas. Timing was set with the vacuum disconnected and plugged. What next?????
Lead Driver
Joined: Jul 2011
Posts: 8,679
Likes: 191
From: On the Edge of the Desert
That brings up another question, is the distributor hooked up to the right port? Should be the one on the passenger side going sideways.
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Fleet Mechanic
Joined: Oct 2005
Posts: 1,369
Likes: 7
From: Gainesville, GA
Vacuum gauge is connected to manifold vacuum. If you have power brakes there should be a tree behind the carburetor coming straight from the intake manifold. Have you taken a compression check? That's the first thing to do in a tune up. Like 351 said, the vacuum is very low, it needs to be 15 or more at idle with the stock cam.
Lead Driver
Joined: Jul 2011
Posts: 8,679
Likes: 191
From: On the Edge of the Desert
Set timing to 12*btc, idle speed to about 650-700, then use your vacuum gauge to tune the mixture. Should be somewhere around 1-1/2 to 2 turns rich. Go for the highest reading.
If that doesn't do it, you've got other problems. A vacuum leak somewhere, or just a worn out motor.
If that doesn't do it, you've got other problems. A vacuum leak somewhere, or just a worn out motor.
Postmaster
Joined: Nov 2012
Posts: 2,806
Likes: 8
From: Langley, BC
No, don't give up. Check your compression and double-check your vacuum. There is no use for you to not want to know what the problem is.
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Junior User
Joined: Aug 2014
Posts: 63
Likes: 0
Number 8 cylender is reading 65 psi. I don't have the skills to do a rebuild and the time with a 3yr old. So I'll save my pennies and get a crate motor or find a low milage donor. I can easily do an engine swap!!!!! Two days work.