what's wrong with my Ford

Asked by Feb 15, 2016 at 11:28 PM about the 1983 Ford F-150 STD Standard Cab 4WD LB

Question type: General

OK so Ijust bought a 1983
Ford F150 4X4.. When you
start it, it will run for about 5
seconds but then it dies. But
before it dies you can turn the
key and bump the starter and
it will idel back again . it don't
smoke or nothing I put a new
ignition switch in new spark
plugs. But yea before it dies
completely you can  bump the
starter and it will idel back up
again. I don't know what is
wrong with it

6 Answers

5,725

I believe that you've got a mechanical fuel pump with a diaphragm...these get torn...would suspect that first~ oh, I see that you can have a mechanical cam driven pump or an electrical pump inside the tank...whichever, get a pressure gauge on the fuel rail and see if your pressure is okay...when it dies and when it runs as well...sounds like power to the fuel pump either through torn diaphragm or faulty electric pump? you tell me~

5,725

okay...this bad boy?~

5,725

or for fuel injection this fellow? pumper has perhaps 15 psi...squirter will be 50-70 PSI ~

5,725

that is not inside the tank...those start in '93~ sorry for my mistake...I make many mistakes~

7,365

Check fuel pressure at the carburator, if u don't have a pressure gauge, spray quick start as u accelerate and see if it stays running, this will g8ve u an idea if it's fuel related. If u have pressure and still dies but runs when u spray it, u have an issue with carburator

5,725

torn diaphragm~ these happen!~

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