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I have a 1986 ford f-150 with a 302 v8. It will start and run for about 10 seconds and then die. Sometimes I can keep it running longer but eventually jus dies. I tried a new relay but did not help
Re: I have a 1986 ford f-150 with a 302 v8. It will start...
Sounds like it is starving for fuel. Possibly a clogged fuel filter. If you haven't changed the filter recently I would suggest that you try this first.
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As it runs well using an ether spray it is unlikely to be timing or ignition related and most likely fuelling.
Take a basics first approach and ensure the following are all good before moving on.
Check the fuel pressures, check the delivery rate and check the injectors.
Get a Camaro they run better faster then ever before try the 2014 stick shift
you will beat every car out there even the Corvette this Camaro is a 6.2 v8 and it goes you'll be the envy of town.
It should at least run for several seconds after you turn the key on. It MAY run longer, but it SHOULD run for several seconds. If fuel demand goes down (engine not burning much fuel), the pump may not run after that.
Check your fuel pressure. It may be low, or losing pressure from a bad pressure regulator. A thorough test of your fuel system seems in order. (A pressure test can also detect a bad regulator, if it's done properly.)
My suggestion is to provide an auxillary fuel source, for diagniostic purposes.
Does the vehicle run porperly when running down the road? if so, fuel flow is not your issue.
What is the normal ambient temprature where you use the vehicle, especially during the dying event?
Has the vehicle heat soaked (which is normal) prior to the issue? Heat soak happens when you turn off the vehicle, no more cooling, temps spike, sometimes causing problems.
During the dying event, does anything that you do help? give throttle, etc?
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