Fuel shooting out the top of two vertical ports on the carburator.

Asked by Nov 12, 2012 at 02:11 PM about the 1969 Ford Thunderbird

Question type: Maintenance & Repair

When i try to start the 1969 Ford Thunderbird, with the 429 engine, as the engine turns, fuel looks like a fountain pulsating out the top of the carburator.  Should it be doing this?  I've never seen anything like this?  The car had been sitting for about 30 years in a garage.  We pulled the spark plugs and put a little mystic oil in them and let it sit for two days.  Then we turned the motor by hand and it moved pretty freely.  We hooked a battery up and turned it with the starter.  Then we added some dry gas and about 9 gallons of fresh fuel.  We replaced the fuel filter, sending unit, fuel pump, cleaned up the spark plugs and replaced the plug and condensor wires.  Everything seems to be working correctly.  When we spray starting fluid into the carb, it wants to start.  Now when we turn the motor we have the fuel fountain that looks like pulsating cobras out the top of the carb?  Did we do something wrong, or is this normal?

8 Answers

2,155

your carb will need a strip down and clean replacing the shut off valves as this is more than likely the problem as they become sticky and fail to function properly and then the floats do not operate properly and you end up with a possable ignition point regards j.s autos

Thanks John! That is what i thought the answer was going to be. I've ordered a rebuild kit for the carb and intend to do just that! Not sure if i will have to purchase the shut-off valves or if they will be included in the rebuild kit. Have a great day!

2,155

a good quality kit will have all the parts required for an overhaul within it send us a photo of the beastie when you can as i love old yank iron j.s autos

Thank you for your insight. You seem to be very knowledgable, any suggestions as to where to buy the rebuild kit?

And I'll be happy to send you a pictures!

815

I agree with John. It sounds to me like the floats are staying open and not closing down like they should. Rebuild the carb and all should be fine.

2,155

im uk so i would go to the net for a kit from probably webber or holly stockist over here try hitting the net for your nearest stockest

5,965

I'm surprised anything at all moved on that carb after 30 years. Gasoline turns to molasses after about 6 months. Take it off the car and soak it in fresh gasoline for about 24 hours before trying to rebuild it. It will save you a bunch of headaches. Try Mac's Antique auto parts on the net for the rebuild kit. They specialize in old Fords and should have the kit if it's a factory Ford carb. The carb should have a metal tag on the top of it somewhere. You'll probably need that number from it to get the correct kit. It should be an Autolite/Motorcraft 4100 4 bbl on that 429, but might have been changed over the years to a Holley 4150, 3310 or maybe something else. That tag will tell you exactly what it is for the rebuild kit.. Good luck, Kenny/MrBlueOval.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Thunderbird

Looking for a Used Thunderbird in your area?

CarGurus has 1,143 nationwide Thunderbird listings starting at $6,995.

ZIP:

Search Ford Thunderbird Questions

Ford Thunderbird Experts

#1 oldtimer37
oldtimer37
Reputation 1,440
#2 Tom Demyan
Tom Demyan
Reputation 1,420
#3 tennisshoes
tennisshoes
Reputation 1,080
View All

Related Models For Sale

Used Ford Mustang
682 Great Deals out of 38,461 listings starting at $1,963
Used Chevrolet Corvette
354 Great Deals out of 20,300 listings starting at $3,688
Used Chevrolet Camaro
659 Great Deals out of 39,411 listings starting at $2,995
Used Chevrolet Impala
929 Great Deals out of 36,399 listings starting at $1,800
Used Mercury Cougar
240 listings
Used Dodge Challenger
414 Great Deals out of 25,373 listings starting at $7,980
Used Pontiac Firebird
11 Great Deals out of 817 listings starting at $3,800
Used Porsche 911
149 Great Deals out of 4,479 listings starting at $9,995
Used Mercedes-Benz SL-Class
110 Great Deals out of 3,396 listings starting at $1,500
Used Chevrolet Monte Carlo
16 Great Deals out of 1,731 listings starting at $1,695
Used Dodge Charger
527 Great Deals out of 29,010 listings starting at $2,275

Used Cars For Sale

2005 Ford Thunderbird For Sale
3 Great Deals out of 77 listings starting at $10,900
2004 Ford Thunderbird For Sale
5 Great Deals out of 156 listings starting at $7,998
2003 Ford Thunderbird For Sale
7 Great Deals out of 143 listings starting at $8,500
2002 Ford Thunderbird For Sale
16 Great Deals out of 333 listings starting at $6,995