Another Possible Stupid Question...
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From: Ball Ground Georgia
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From: Ball Ground Georgia
I will eventually put prob a Holley carb on it. Just wanted to get it running first, so I put it back stock. Didn't want to spend the $ on a new intake and carb. So many other things that need to be done first.
5th Wheeling
Joined: Aug 2012
Posts: 32
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From: Gladwin Michigan
It could be that your engine back fired and caused the power valve in carb to blow. Holleys are known for that, that is why i swithced to edelbrock. If the truck timing is good and its hard starting or very hessatant on acceleration then most likely power valve. if not then it sounds like timing.
5th Wheeling
Joined: Aug 2012
Posts: 32
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From: Gladwin Michigan
I just noticed you posted that you were planning on a holley in the future but a motorcraft carb also has a power valve, check it out. I recomend Edelbrock carbs, I put on on my 67 f250 with a 360 that had a holley and boy what a difference.
5th Wheeling
Joined: Aug 2012
Posts: 32
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From: Gladwin Michigan
Just a small diaphram on the front of your carb with 4 bolts and a linkage that goes to your throttle linkage. Thats if you have a motorcraft carb. Holly is on top i beleive. Its been a while but i will check if you need me to. Should be less than $10.00 bring that fuel pressure down to less then 8 lbs
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From: Ball Ground Georgia
I have been researching power valve for the past few minutes. Someone mentioned it before, but I guess I misunderstood them because I didn't check it. After reading about it I will be checking it tomorrow. A couple of sites said to take the idle screws all the way in... If it is still running... Its the Power Valve. On the Motorcraft, I will have to pull off the carb. It is on the bottom. Luckily, I believe I have an extra to the house. While I have it out (if that is the problem) I will be installing the power valve protector. I have a refurbished carb so i thought it would have one...
Post Fiend
Joined: Jun 2003
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From: Black Hills of SD
Just a small diaphram on the front of your carb with 4 bolts and a linkage that goes to your throttle linkage. Thats if you have a motorcraft carb. Holly is on top i beleive. Its been a while but i will check if you need me to. Should be less than $10.00 bring that fuel pressure down to less then 8 lbs
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Joined: Dec 2008
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From: Fowlerville, Michigan
Just a small diaphram on the front of your carb with 4 bolts and a linkage that goes to your throttle linkage. Thats if you have a motorcraft carb. Holly is on top i beleive. Its been a while but i will check if you need me to. Should be less than $10.00 bring that fuel pressure down to less then 8 lbs
Senior User
Joined: Jan 2012
Posts: 333
Likes: 1
From: Denver, Co
I have been researching power valve for the past few minutes. Someone mentioned it before, but I guess I misunderstood them because I didn't check it. After reading about it I will be checking it tomorrow. A couple of sites said to take the idle screws all the way in... If it is still running... Its the Power Valve. On the Motorcraft, I will have to pull off the carb. It is on the bottom. Luckily, I believe I have an extra to the house. While I have it out (if that is the problem) I will be installing the power valve protector. I have a refurbished carb so i thought it would have one...
That was my problem on my autolite 2100
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From: Ball Ground Georgia
Ok. Power valve is good. Intalled the regulator. Runs good at about 3.5psi. Still have issues with the idle. Is there a thread that goes step by step on tuning? I'm just not doing something right....
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