Manifold vacuum port
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Manifold vacuum port
Could someone tell me what should be connected to the manifold vacuum port located just in front of my 2150 2bbl carb, and just behind the large smog pump port in the manifold? I've been trying to get my vacuum lines located in the most accurate places. Mil1ion has been helping me out with some suggestions over the past couple of nights...Thanks for that.
I have a '79 F150 351M with a C6 tranny. Most of the smog pump system has been eliminated or bypassed. Someone took the vacuum line from the bright finished canister that is connected by what looks to be a 1 inch hose to the smog pump and stuck it onto the manifold port that I described earlier. This just doesn't look right.
I have a '79 F150 351M with a C6 tranny. Most of the smog pump system has been eliminated or bypassed. Someone took the vacuum line from the bright finished canister that is connected by what looks to be a 1 inch hose to the smog pump and stuck it onto the manifold port that I described earlier. This just doesn't look right.
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Ah ! specific questions ? 
Didn't I link this page for you.?
http://mil1ion.clubfte.com/FordVacuumDiagrams.html
Normally the vacuum port from the carb runs to the controlled vacuum switch at the front of the engine,with the vacuum line from the distributor running to the same spot
Didn't I link this page for you.?
http://mil1ion.clubfte.com/FordVacuumDiagrams.html
Normally the vacuum port from the carb runs to the controlled vacuum switch at the front of the engine,with the vacuum line from the distributor running to the same spot
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Hi Dennis. The linked picture is a little confusing to me. It shows the dist vacuum going directly to manifold vacuum....? Like Farmnaggie, I'm re-doing my vacuum lines. I'm running manifold vacuum to the outside port of the TVS (located on thermostat housing). The dist will run to the center TVS port, and the carb ported vacuum will run to the inside TVS port.
This gives manifold vacuum to the dist at start-up and until the engine thermostat opens, then it switches to carb ported vacuum. (This results in a longer fuel burn time and faster idle until warm-up, at which time vacuum switches to carb ported vacuum for normal operation.)
What do you think of this setup? Is this correct (for a 78 351M)?
Thanks for any advice, and Farmnaggie excuse me for hijacking your thread.
TLR
This gives manifold vacuum to the dist at start-up and until the engine thermostat opens, then it switches to carb ported vacuum. (This results in a longer fuel burn time and faster idle until warm-up, at which time vacuum switches to carb ported vacuum for normal operation.)
What do you think of this setup? Is this correct (for a 78 351M)?
Thanks for any advice, and Farmnaggie excuse me for hijacking your thread.
TLR
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Yes, that is how Ford designed it
It's when people remove all the emissions stuff off their engines,the vacuum advance line gets run directly to the ported vacuum on the carb,
This is diagram 9-60S-R0 for a 351M non-california application.
It's when people remove all the emissions stuff off their engines,the vacuum advance line gets run directly to the ported vacuum on the carb,
This is diagram 9-60S-R0 for a 351M non-california application.
Last edited by Mil1ion; Mar 27, 2006 at 12:05 AM.
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Thanks for the diagram, Dennis, it's a big help. 
I plan on integrating the TVS/VCV into the vacuum advance hose routing this week, and I'll post back the results. I'm hoping it'll improve cold start-up drivability.
I plan on integrating the TVS/VCV into the vacuum advance hose routing this week, and I'll post back the results. I'm hoping it'll improve cold start-up drivability.
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