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Classic Mustangs Tech Forum

Technical discussions specific to 1964-1967, 1968-1970, and 1971-1973 Classic Mustang. Discuss all tech related to in-line six cylinder and V8 powered Vintage Mustangs here.

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Unread 08-09-2009   #1 (permalink)
cory93 is offline Rookie

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Default '65 Fastback Mustang

Hey everyone, I got my car running,but only with starting fluid. is there a flow of the gas switch or where is the gas hose connected to the rest of the car? is there a picture that i can see. maybe its the fuel pump. how do you tell if thats bad? thanks, cory93
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Unread 08-09-2009   #2 (permalink)
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Hello. It sounds as if you have an obstruction of some sort in the path of the fuel from the tank to the carb. I think that I would start with disconnecting the fuel line from the carb and, with the fuel line pointed into a suitable container, have someone start cranking the motor. If fuel comes gushing out of the line, the obstruction is in the carb itself, probably some crud accumulated on the bottom of the float bowl. If no to the fuel gushing out, I would then check the filter inside the screw-on cannister hanging off of the bottom of the fuel pump, assuming that your car still has the right fuel pump. Basically, you just start at one end of the system and go through it step at a time until you find the problem.
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Unread 08-10-2009   #3 (permalink)
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Silly question, but does it have enough gas in the tank? I have learned that you can't trust what it says when you turn the key. The gas needle will surge up and then drop to what is actually in the tank.
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Unread 08-10-2009   #4 (permalink)
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cay ill try that. but how do you know if the fuel pump is bad? ya, i have 6 or ,or more gallons
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Unread 08-10-2009   #5 (permalink)
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Quote:
Originally Posted by cory93 View Post
Hey everyone, I got my car running,but only with starting fluid. is there a flow of the gas switch or where is the gas hose connected to the rest of the car? is there a picture that i can see. maybe its the fuel pump. how do you tell if thats bad? thanks, cory93
Hello Cory93,

This is Print Dad once again and I gotta slow you down.

Don't do anything just yet......
You were having trouble witht eh ignition switch and then I thought all that was fixed and the car started.....

Now you needed starter fluid o start. It is quite possible you fouled the plugs.

The advice given is great but ......take it one step at a time.
It would help if you could answer the following:

1. - When the car started did it continue to run or stall out in 10 seconds?
2. - Does the car have an inline clear filter?

It is possible you have a fuel blockage as others indicated but perhaps you have fouled the plugs.
If the car started and kept running itself, you may just need to clean the plugs.

It is also possible you have issues with carb, fuel pump, lines etc tec.

The best way is determine what is going on. If the car stalled out after the starter fluid burned off, I would pull the fuel line to the carb. Then insert end in to a container and have someone crank te motor and see if the gas goes to the container. Then you know there is fuel coming from the tank and getting pumped by the fuel pump.
If not...then the trouble is further back in the system assuming the car has fuel.

Sorry to jump on you...but I hate to see people throw away money.
Just be patient a little and we can diagnose this. As you see there are many great people here Print Dad
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Unread 08-10-2009   #6 (permalink)
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print dad is spot on
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Unread 08-10-2009   #7 (permalink)
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when the car started it stalled out in when the starting fluid ran out. There is about 6 or more gallons of gas in the car. no the filter is not clear
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Unread 08-10-2009   #8 (permalink)
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Default 65 Fastback Mustang

Hello Cory93.


The best way is determine what is going on. If the car stalled out after the starter fluid burned off, I would pull the fuel line to the carb. Then insert end in to a container and have someone crank te motor and see if the gas goes to the container. Then you know there is fuel coming from the tank and getting pumped by the fuel pump.
If not...then the trouble is further back in the system assuming the car has fuel.

How old is the gas in the car?

Look at the carburetor, do you see a metal line that goes to the carb?

I forget your engine size 6 - 8? Does your car have an electric fuel pump that was added? My advice is for a stock fuel pump. Electric we can tackle after.

If it is an 8 cyl.
Trace the fuel line back to the lower driver side of the motor. You should see the fuel pump. The fuel pump will have 2 lines. One that goes up to the carb and the other that comes out of the inner fenderwall on the driver side. This hose will be about 8 inches long and made of neoprene (rubber looking).

Now what I would do is
1. - Remove the fuel line from the carb. Place the end into a 2 liter clear plastic soda bottle. Tape the line into the bottle. Now have someone crank the motor and see if gas gushes into the bottle.

If it does, you know the fuel pump is working.

Next I would replace the filter on the carb. Built into the carb where the line goes.

At some point I would install a clear filter before the carb but don't worry about that yet.

If the fuel pump is not pumping it should be replaced. You may have a canister type fuel pump but I am thinking we should just replace the unit.

Once we establish we have good fuel to the carb we can go from there.

So to summarize - - 1What size motor 6 - 8?
2 - How old is the gas?
3 - Electric fuel pump or stock. If it is electric it is probably mounted on the drivers inner fender and you'll have a block off plate on the motor.

I am thinking your experience level is somewhat low so please bear with me.
I am sure we can get this going. Just be patient and it will run.

If you don't understand things on the post.....just let me know....I'll break it down even further. Print Dad
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Unread 08-12-2009   #9 (permalink)
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the motor is a v8, brand new gas, stock fuel pump, if i need to get a new fuel pump would you recommend electric or stock?
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Unread 08-13-2009   #10 (permalink)
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Default 65 Fastback Mustang

Hello cory93,
My opinion is to stick with stock pump. Less hassles.

Fuel pumps don't go too often to check it before you replace. You may need to spend money on other things.

Try as suggested to check the pump. Print Dad
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