My 1978 ford thunderbird will not turn on cause it doesn't pass gas from the tank to the carbiator. My fuel pump is new. What can it be?


Asked by May 29, 2015 at 04:01 PM about the 1978 Ford Thunderbird

Question type: Maintenance & Repair

6 Answers


Check the fuel pump relay,


Tap on the carb with the handle of a screwdriver. Not a hammer. The float could be stuck.


Had this happen to my 1977 Thunderbird back in the day. The lobe that pushes the mechanical arm down on the pump was worn. Ended up putting a block plate the fuel pump opening and installed and electric fuel pump. That is the cheapest way to go but if your fuel pump is pumping check for cracks in the rubber fuel lines. If there is a crack in one of the lines it will just suck in air and not deliver fuel to the carb.


is the fuel line plugged any where when you turn it over do you get any gas to the carb is there a filter on the carb that is plugged


It is possible the fuel filter is completely clogged. It's been awhile since I had that vehicle but I think the fuel filter is under the hood on the side wheel well or fire wall. There may be a in line filter that goes into the carb. To check for fuel unhook line going to carb and have someone turn vehicle over and see if any gas comes out. Put a clear bottle or jar over open end of line to catch the gas and it will also allow you to see gas flow. It should be a nice strong flow.


And also like I said in first answer check all rubber fuel lines coming from tank and going to carb making sure they are not cracking or cracked.

Your Answer

Add photo

Related Questions

  • I have a 1978 Thunderbird that wants to start but it won't. Is it the fuel pump? 6 answers

    1978 Ford Thunderbird


    Maintenance & Repair

  • 85 Thunderbird not getting gas 2 answers

    i have a 85 Thunderbird thats not getting gas to the carb. it has a new gas tank, new fuel pump, the fuel pump relay is good.i dropped the tank to check the pump and did a dry test on it and it worke...

    1985 Ford Thunderbird


    Maintenance & Repair

  • Is it the Fuel Filter, Fuel Pump or Wiring? 9 answers

    My 1992 T-Bird, was doing really good until I got it smog, had an o2 sensor replace and an egr sensor. Went to a Valero gas station then it started running horribly, jerking, missing, I burned out the...

    Ford Thunderbird


    Maintenance & Repair

  • 93 T bird getting no hum from the fuel pump 6 answers

    My 93 T bird has been sitting for a couple of years. When it was last running (idling in an effort to keep parts in working order) it was left unattended for a short time and ran out of fuel. Now it t...

    1993 Ford Thunderbird


    Maintenance & Repair

  • 1978 Chrysler New Yorker 440 Lean Burn System 22 answers

    My nefew's 440 ci New Yorker has 25,000 miles on her, inherited from his Grandfather. The car stopped running. The motor spins over, there is spark at the plug boot ends. The distributor has the si...

    1978 Chrysler New Yorker


    Maintenance & Repair


Looking for a Used Thunderbird in your area?

CarGurus has 1,193 nationwide Thunderbird listings starting at $6,777.


Search Ford Thunderbird Questions

Ford Thunderbird Experts

#1 oldtimer37
Reputation 1,430
#2 Tom Demyan
Tom Demyan
Reputation 1,380
#3 tennisshoes
Reputation 1,080
View All

Related Models For Sale

Used Ford Mustang"
725 Great Deals out of 41,064 listings starting at $900
Used Chevrolet Corvette"
433 Great Deals out of 20,224 listings starting at $3,688
Used Chevrolet Camaro"
799 Great Deals out of 38,820 listings starting at $2,650
Used Ford F-150"
3,257 Great Deals out of 216,652 listings starting at $1,500
Used Dodge Challenger"
439 Great Deals out of 25,365 listings starting at $7,980
Used Mercedes-Benz SL-Class"
108 Great Deals out of 3,662 listings starting at $1,500
Used Chevrolet Impala"
935 Great Deals out of 35,693 listings starting at $1,500
Used Dodge Charger"
640 Great Deals out of 29,672 listings starting at $2,275
Used Pontiac Firebird"
9 Great Deals out of 904 listings starting at $2,900
Used Mercury Cougar"
270 listings

Used Cars For Sale

2005 Ford Thunderbird For Sale
4 Great Deals out of 92 listings starting at $7,500
2004 Ford Thunderbird For Sale
9 Great Deals out of 161 listings starting at $7,998
2003 Ford Thunderbird For Sale
9 Great Deals out of 149 listings starting at $7,995
2002 Ford Thunderbird For Sale
14 Great Deals out of 347 listings starting at $6,777