What carb do I have???
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What carb do I have???
I recently removed the smog pump because it wasn't hooked up, and blocked off my EGR on my 84 F150 I6 2wd. Now in reading alot of other posts, there is mention of vacuum advance distributors. After looking the motor over, I don't see any vacuum lines going to my distributor, just a wiring harness.
Since I have removed the SMOG and EGR related Vacuum lines, should one of these lines at 1 point gone to the dist??? It sounds like there is a factory setup where a vacuum line goes from the Carb to the Dist.
Do I have a different distributor and carb?
-Thanks, Rob
Since I have removed the SMOG and EGR related Vacuum lines, should one of these lines at 1 point gone to the dist??? It sounds like there is a factory setup where a vacuum line goes from the Carb to the Dist.
Do I have a different distributor and carb?
-Thanks, Rob
Last edited by 84ford150; Nov 14, 2007 at 12:05 AM.
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From: Virginia
Do you have a spot to hook a vacuum line on the dist and it's just missing the line? Or you do not even have a vacuum advance can on the side to hook a vacuum line to. If you do not have a vacuum advance on the side of the dist, then your engine is computer controlled, so I would not unhook anything if it can be helped.
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I had to unhook the smog, because it did not work, and the pipe that went from the pump to the CAT was rotted away, and no longer hooked up. EGR was also bypassed.
I don't see any vacuum diaphram or hookup on my distributor, just some electrical connections which are plugged into the side of distributor.
I don't think the removal of SMOG and EGR would effect an electronic distributor, but I could be wrong.
I don't see any vacuum diaphram or hookup on my distributor, just some electrical connections which are plugged into the side of distributor.
I don't think the removal of SMOG and EGR would effect an electronic distributor, but I could be wrong.
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From: Cle elum, Wa.
Im not positive, but I think Ford switched from the Duraspark II to the TFI system in 83. My truck was built in late April of 83 and when I go to get a new distributor cap they always ask if I have the DS II or TFI. I would guess that you have the TFI distributor which doesnt have a vacuum advance. Oh and my truck is a 4X4, 351, Duraspark II.
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From: Virginia
To your original question, it sounds like you have a feedback carb with electronic engine controls. This means you have sensors and a computer to run the engine, and you do not have any advance mechanisms in the dist because the computer has control of these functions. It takes info from the engine sensors, and makes decisions on what to set the timing at. That's why I say, I would not take anything off the engine if you can help it. If you take too much stuff off, or it's not working, you will cripple the computer's ability to run the engine, and performance and mileage will suffer.
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If I remove this setup, and install a duraspark II dist and module, and get the matching carb? Will this work?
What I understand is that this conversion is pretty much plug n play as far as the electronics go?
What I understand is that this conversion is pretty much plug n play as far as the electronics go?
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From: Virginia
I don't know if it's that easy. You need to run a resistor in the coil wiring. Other guys have said the DSII module does plug in where the old one was, but I have personally never done this swap.
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Posting Guru
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From: North Reading Mass
My 83 302 had non computer control 2bbl carb DSII electronics and vac advance on the dist. Sounds like you have the TFI system. Look at your carb if its computer controlled there should be an electrical connector on it. My friend had a ford truck with a computer controlled carb and I replaced it with an older carb. The electronic carbs main function was to have the computer control the air fuel ratio by a mixture jet in the carb that was activated by the computer. Before electronics it was controlled by vacuum. BTW when the electronic carbs work right they give great gas mileage.
regards
rikard
regards
rikard
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From: Virginia
If you change or swap out any major component in this system, you need to swap it all out, meaning carb and dist/ignition. The computer controls all the timing functions for the engine, so any sensor missing, including the throttle position sensor on the feedback carb, could interfere with the computer making timing decisions for the engine.
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This post has drummed up alot of interest!!!!!
Just took the truck out tonight, and under heave accel, or up hill, there is little power,and alot of valve ping!!!!. The TFI is not advancing at all. Should have more power with NO ping.
IS the recurve difficult, or is it trial and error?
Also, I don't know for sure, but I'm thinking that I can run a vacuum line from the intake manifold to the dizzy for vacuum advance?
In theory, it seems like it would work..
Just took the truck out tonight, and under heave accel, or up hill, there is little power,and alot of valve ping!!!!. The TFI is not advancing at all. Should have more power with NO ping.
IS the recurve difficult, or is it trial and error?
Also, I don't know for sure, but I'm thinking that I can run a vacuum line from the intake manifold to the dizzy for vacuum advance?
In theory, it seems like it would work..
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From: Spokane, WA
http://fordsix.com/forum/viewtopic.php?t=30894
http://www.reincarnation-automotive....ons_index.html
Give that a read and see if it helps.
This company has recurved distributors available:
http://www.performancedistributors.c...dduraspark.htm
http://www.reincarnation-automotive....ons_index.html
Give that a read and see if it helps.
This company has recurved distributors available:
http://www.performancedistributors.c...dduraspark.htm
Last edited by Harte3; Nov 25, 2007 at 10:38 AM.
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From: Spokane, WA
The whole system must be intact and working properly for the whole engine to run properly. Re-engineering by removing this part or plugging that part is not going to work...the whole system has to be re-engineered if anything other than a properly intact system is to work.
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HARTE3,
I agree with you. Do you think if I completely remove the TFI system and install the DSII, the engine will run better?
It seems as though if any 1 part of the TFI systems fails, or is removed, engine problems begin.
I agree with you. Do you think if I completely remove the TFI system and install the DSII, the engine will run better?
It seems as though if any 1 part of the TFI systems fails, or is removed, engine problems begin.