390 keeps flooding need help
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Joined: Dec 2001
Posts: 22,436
Likes: 17
From: Louisville,Ky.
Moving the accelerator pump rod to the outer hole may fix that off idle bog. There isn't much you can do to change the cfm except get a different carb. The throttle plates can not be resized.
I run the exact same carb on the 351W in my 63 F100 so it's not too big that it can't be tuned right.
What ignition system do you run. Points or electronic?
I run the exact same carb on the 351W in my 63 F100 so it's not too big that it can't be tuned right.
What ignition system do you run. Points or electronic?
Thread Starter
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Fleet Mechanic
Joined: Jun 2007
Posts: 1,931
Likes: 2
From: Ohio
I'm guessing points as it's nothing aftermarket. I still haven't had a chance to really get on it as every wide open road i took it on today had a bunch of people in front of me.
So are you saying have the carb setup different jet wise or whatever would be alright to have done and make a difference?
So are you saying have the carb setup different jet wise or whatever would be alright to have done and make a difference?
Thread Starter
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Fleet Mechanic
Joined: Jun 2007
Posts: 1,931
Likes: 2
From: Ohio
I honestly don't know. I would like to eventually have a buddy that works at napa or another one that works at a dyno shop check the fuel pressure for me but I just haven't gotten around to it.
Moderator
Joined: Dec 2001
Posts: 22,436
Likes: 17
From: Louisville,Ky.
I'm guessing points as it's nothing aftermarket. I still haven't had a chance to really get on it as every wide open road i took it on today had a bunch of people in front of me.
So are you saying have the carb setup different jet wise or whatever would be alright to have done and make a difference?
So are you saying have the carb setup different jet wise or whatever would be alright to have done and make a difference?
Oh yeah, I would recommend a heat shield like the Mr. Gasket 3710.
CARBURETOR HEAT SHIELD - CARB ACCESSORIES - Mr. Gasket
Thread Starter
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Fleet Mechanic
Joined: Jun 2007
Posts: 1,931
Likes: 2
From: Ohio
Would I be better off payin about $47 for the kit and do everything to the carb on my own or take it somewhere and have them do it? With guidance on which jets to change and what not I'm sure I could do the work myself.
Moderator
Joined: Dec 2001
Posts: 22,436
Likes: 17
From: Louisville,Ky.
If you are not comfortable doing it, by all means have a trusted shop do it. It is basically just trial and error. There is no magic number. All engines react different.
Have you pulled a spark plug just to see how they look? White like too lean or black from too much fuel.
Have you pulled a spark plug just to see how they look? White like too lean or black from too much fuel.
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Fleet Mechanic
Joined: Jun 2007
Posts: 1,931
Likes: 2
From: Ohio
Yea I guess i'd rather have a shop do it. They should have everything right so I won't need to buy anything to give them to use?
I changed out all of the spark plugs the day after the pin sheared and it wasn't running. But since it has been running I haven't checked them again. I'll look tomorrow when I go to work on it a bit and take a picture too.
I changed out all of the spark plugs the day after the pin sheared and it wasn't running. But since it has been running I haven't checked them again. I'll look tomorrow when I go to work on it a bit and take a picture too.
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Fleet Mechanic
Joined: Jun 2007
Posts: 1,931
Likes: 2
From: Ohio
Well now it's not even running right. I went to take it out for a spin today and it wouldn't idle right (too low although i had it set where it should be but it would idle up to there) so i raised it to idle where i wanted it again, and when i'm driving it, when i get close to 2000rpm it seams to misfire or something, or hesitate i think. Like it just sputters kinda. When i'd let off the gas to run or stop, the idle would raise about 100rpm or so for no reason. The filter towards the carb is always completely full. I don't know if too little or too much psi is causing this.
gettin kinda annoying i can't drive this without a problem
gettin kinda annoying i can't drive this without a problem
