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Old 08-16-2013, 04:27 PM   #1
Duba
 
Join Date: May 2009
Vehicle: 1967 Mustang Coupe
Location: California
Posts: 42
Default 67 stang with fuel problem

67 coupe with fuel problem. Thought is was a crimp in the fuel line from the tank to the pump, replaced it since it needed it anyway, took off the pump to see if was pumping...nothing, so I replaced the fuel pump even though it had a new on on it....checked fuel filter before the pump, has a brand new carb...doesn't seem to be pumping gas, has a new tank...am I missing something? What heck else could it be?
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Old 08-16-2013, 09:16 PM   #2
Boogie's_AutoRama
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Vehicle: 1966 Mustang Convertible / 1965 Mustang Fastback
Location: Louisiana
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Default

Coupla' things to check, kinda sorta in this order:

Prime the motor in the carb with a ˝ shot glass (or less) of gas. May need to run a bit to haul fuel all the way from the tank.

No luck, then:
Disconnect the feed line going to the pump and see if you can siphon gas from the tank. Some air pressure back at the filler neck should get it flowing. Or go old school and suck on the line. ...hehehe, be careful.

If you get gas up to there, then make sure the fuel pump cam eccentric is doing it's job.

If you've got fuel up to the pump, and the pump is being actuated you should get gas up to the carb.




What kind of filter do you have between the pump and the tank? is the flow correct?

On this "new tank", is the sending unit installed correctly?


Hope this helps.




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Old 08-16-2013, 10:02 PM   #3
Duba
 
Join Date: May 2009
Vehicle: 1967 Mustang Coupe
Location: California
Posts: 42
Default

Quote:
Originally Posted by Boogie's_AutoRama View Post
Coupla' things to check, kinda sorta in this order:

Prime the motor in the carb with a ˝ shot glass (or less) of gas. May need to run a bit to haul fuel all the way from the tank.

No luck, then:
Disconnect the feed line going to the pump and see if you can siphon gas from the tank. Some air pressure back at the filler neck should get it flowing. Or go old school and suck on the line. ...hehehe, be careful.

If you get gas up to there, then make sure the fuel pump cam eccentric is doing it's job.

If you've got fuel up to the pump, and the pump is being actuated you should get gas up to the carb.




What kind of filter do you have between the pump and the tank? is the flow correct?

On this "new tank", is the sending unit installed correctly?


Hope this helps.




.
Car runs with a 1/2 shot of gas in the carb...albeit for about 3-4 seconds.

Not sure about the cam eccentric or how to tell if that is working, was I supposed to do something different then remove the other pump (which was new) and reinstall another one?

I will try to attach a vacuum pump to the newly install line. The pick up for the tank is installed correctly as it was running about 3 months ago, although with a hick up which prompted me to look at the gas line in the first place.

Just have a regular filter bought at O'reilly's and the flow is correct with the part that says "in" as being gas from the tank going towards the pump then out to the fuel pump. Maybe I will try to eliminate that altogether.
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Old 08-16-2013, 10:02 PM
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