How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Ron Your Own Question
Ron
Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 23001
Experience:  23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
7276279
Type Your Ford Question Here...
Ron is online now
A new question is answered every 9 seconds

Ford f150: 92 ford f 150 straight six won't start.50 lbs pressure

Customer Question

92 ford f 150 straight six won't start.50 lbs pressure at the fuel rail spark at the coil
Just bought the truck previous owner replaced the ecm ,icm cap rotor and wires will run briefly with a shot of starting fluid
Submitted: 1 year ago.
Category: Ford
Expert:  Ricardo Hohl replied 1 year ago.
Hi welcome to just answers .MY NAME IS***** WILL TRY MY BEST TO HELP YOU WITH THIS PROBLEM. IF YOU PUT STARTING FLUID ON THE THROTTLE WILL IT START?
Customer: replied 1 year ago.
Yes
Expert:  Ricardo Hohl replied 1 year ago.
ok this means your injectors are not opening to spray fuel in to the cylinders.
Expert:  Ricardo Hohl replied 1 year ago.
have you check for good fuel pressure with a fuel presure tester?
Customer: replied 1 year ago.
50 lbs on the Fuel rail
Customer: replied 1 year ago.
yes it has 50 lbs at the fuel rail
Expert:  Ricardo Hohl replied 1 year ago.
ok then you have no power going to the injectors thats why the engine wont start
Customer: replied 1 year ago.
That I know it has a new electronic control module and ignition control module so I'm thinking wiring or ?
Expert:  Ricardo Hohl replied 1 year ago.
have you check for power atone of the injector harness conector
Customer: replied 1 year ago.
I assume the red is the power wire and the other is the pulse ?
Customer: replied 1 year ago.
No I have not checked there I will check tomorrow
Expert:  Ricardo Hohl replied 1 year ago.
check with a test light while crancking the engine see if the test light flikers on and off.
Expert:  Ricardo Hohl replied 1 year ago.
k ill talk to you tomorrow.
Customer: replied 1 year ago.
Sorry I changed my mine I have 12 volts on the red wire at the front injector
Expert:  Ricardo Hohl replied 1 year ago.
ok good now lest check the ground
Customer: replied 1 year ago.
Yes it seems to flicker with a test light
Expert:  Ricardo Hohl replied 1 year ago.
do the same with the test light on the other wire only this time conect the alagator (clamping side ) side of the test light to positive on the battery. if you have a ground to the injector the light will also fliker on and of as you crank the engine.
Expert:  Ricardo Hohl replied 1 year ago.
sorry did not see your answer ok then this means you either have water on the fuel or bad injectors .
Expert:  Ricardo Hohl replied 1 year ago.
there is no reason why this vehicle doesnt start, you have spark , you have injector signal, engine responds when you add fuel thru the thottle . It has to be bad injectors or bad fuel.
Customer: replied 1 year ago.
Ok with the test light to positive and cranking no light
Expert:  Ricardo Hohl replied 1 year ago.
ok then you have no signal to the injector .
Expert:  Ricardo Hohl replied 1 year ago.
this truck will never start like this., This signal comes from the computer and is provided to the computer by the distribuitor
Expert:  Ricardo Hohl replied 1 year ago.
you said you replace your computer right?How about the distribuitor?
Customer: replied 1 year ago.
replace the computer and not the distributor because I have Spark
Expert:  Ricardo Hohl replied 1 year ago.
let me look up the wiring on this vehicle on my data and get back to you tomorrow will that be ok with you?
Expert:  Ricardo Hohl replied 1 year ago.
any time after 5 pm ?
Customer: replied 1 year ago.
Yes thank you
Expert:  Ricardo Hohl replied 1 year ago.
YOU WELCOME.
Customer: replied 1 year ago.
Good evening have you came up with any ideas on this truck