Problem Is Back
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Senior User
Joined: Nov 2004
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From: Wilton, Ca
Problem Is Back
I HAD a problem of when you get on the gas the engin would cough just once and then take off as normal.
Don't know why ,But it hadn't done it in quite awhile but for the last week the problem has came back.
I thoudh it might be starving for gas so I changed ALL the filters.(air and gas)
A friend of mine said it was the vacuum advance. Hum????
This is a 77F250 351M TWO BARREL CARB AND A STANDARD TRAN
Thanks Don
Don't know why ,But it hadn't done it in quite awhile but for the last week the problem has came back.
I thoudh it might be starving for gas so I changed ALL the filters.(air and gas)
A friend of mine said it was the vacuum advance. Hum????
This is a 77F250 351M TWO BARREL CARB AND A STANDARD TRAN
Thanks Don
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Joined: Nov 2005
Posts: 295
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From: Collierville
I had that same problem on a 77 with the Motorcraft card on a 302. Also it was hard to start after it set a couple of days. It turned out to be the accelerator pump on the carb. I notices that when you steped on the gas it pumped gas through a weap hole on the bottom of the little plate covering it. Alos when it set gas would drip out of the carb bowl so it took alot of cranking to fill it back up before it would start.
The repair part was under $4 at AutoZone down the street.
The repair part was under $4 at AutoZone down the street.
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Senior User
Joined: Nov 2004
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From: Wilton, Ca
Originally Posted by Mil1ion
Ah...The Infamous " Flat Spot"
Check the power valve and/or the linkage for it.
Check the power valve and/or the linkage for it.
The cargartor shows no signs of leaking when I changed the fuel filter.
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Joined: Dec 2001
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From: Louisville,Ky.
The accelerator pump is on the front of the carb. It has a linkage that runs to the side of the carb where the accelerator cable hooks up. When you look down inside the carb barrels (engine off) and manually open the throttle, you should see two streams of gas shoot into the barrels.
You might also need to check the timing (loose distributor) and verify that the vacuum advance is working.
You might also need to check the timing (loose distributor) and verify that the vacuum advance is working.
