help plz
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Senior User
Joined: Dec 2012
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From: louisiana
help plz
my f100 i got from utah(provo area) drives like pooh ever since i got it back down here. everyone tells me it's because of the atmosphere difference. What needs to be done?
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Senior User
Joined: Dec 2012
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From: louisiana
the carb says 9834-3, i htink it's a 600 cfm. the truck drove fine all the back to la. but ever since it runs bad. when i drove up there in a diff vehicle it drove bad too. i know nothing about engines. so any help is appreciated
Elder User
Joined: Aug 2011
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From: Sweet home Alabama
If you know nothing about what your doing Id take it to someone who does...If you want to drive it, But if your looking to learn then youve come to the right place.
Sounds like the carb is tuned to high elevation and your gonna need to re-jet it to sea level, Being your new I'd toss the Holley and get a Edelbrock a hell of alot easier to tune.
Is it puking black smoke? Or smell like raw fuel when its running?
Could also be the spark plugs a fouled out.
Points if its 75 or older,Vacuum leak...Etc
Sounds like the carb is tuned to high elevation and your gonna need to re-jet it to sea level, Being your new I'd toss the Holley and get a Edelbrock a hell of alot easier to tune.
Is it puking black smoke? Or smell like raw fuel when its running?
Could also be the spark plugs a fouled out.
Points if its 75 or older,Vacuum leak...Etc
Hotshot
Joined: Apr 2009
Posts: 14,333
Likes: 247
From: Stanley, VA
Provo area is around 4600 ft, LA is sea level. You'll probably need to lean out the carb jetting. It's relatively simple but if you're not familiar with engines I would take it to someone to do the carb tuning. While it's simple, it's not the kind of thing to get your feet wet with.
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Senior User
Joined: Dec 2012
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From: louisiana
http://imageshack.us/a/img687/2181/img02551c.jpg
http://imageshack.us/a/img824/3295/img02561f.jpg
Are these peices screwed together somewhere i don't see or is it a stick on gasket? the jets are in here right ?lol
okay the jets are 68s. what should i change them too
http://imageshack.us/a/img824/3295/img02561f.jpg
Are these peices screwed together somewhere i don't see or is it a stick on gasket? the jets are in here right ?lol
okay the jets are 68s. what should i change them too
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Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
Genuine Ford Motorcraft carbs: 0-5,000 ft. used the same carb jets / 5,000-10,000 ft. used another / 10,000-15,000 ft. is different again.
Truck may have come from Provo UT, but where was it sold new? Could have been sold anywhere, like Park City UT or Leadville CO, the highest incorporated city in the US @ 10,000 ft.
Truck may have come from Provo UT, but where was it sold new? Could have been sold anywhere, like Park City UT or Leadville CO, the highest incorporated city in the US @ 10,000 ft.
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Senior User
Joined: Dec 2012
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From: louisiana
Genuine Ford Motorcraft carbs: 0-5,000 ft. used the same carb jets / 5,000-10,000 ft. used another / 10,000-15,000 ft. is different again.
Truck may have come from Provo UT, but where was it sold new? Could have been sold anywhere, like Park City UT or Leadville CO, the highest incorporated city in the US @ 10,000 ft.
Truck may have come from Provo UT, but where was it sold new? Could have been sold anywhere, like Park City UT or Leadville CO, the highest incorporated city in the US @ 10,000 ft.
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