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Only four fuel injectors are firing. A gas hog, starts only

Customer Question
only four fuel injectors are...
only four fuel injectors are firing.
JA: Has the vehicle turned into a gas hog? And how does it start -- same as usual?
Customer: Yes a gas hog, starts only with full throttle
JA: What is the model/year of your Ford?
Customer: 1991 F150 5.8
JA: Are you fixing your F150 yourself? What have you tried so far?
Customer: Yes, tested fuel injector connections only four are receiving power
JA: Anything else you want the mechanic to know before I connect you?
Customer: How do we find why the four injectors are"nt receiving impulses
Submitted: 7 months ago.Category: Ford
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Answered in 1 minute by:
4/30/2017
Ford Mechanic: HDGENE, Ford Senior Master/Diesel/Trans replied 7 months ago
HDGENE
HDGENE, Ford Senior Master/Diesel/Trans
Category: Ford
Satisfied Customers: 5,890
Experience: 28 years Auto experience, Ford ,GM, Chrysler, Asian & European
Verified

Hello, and thank you for using Just Answer! My name is***** me a few moments to review your question and Ill do my best to assist you.

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Ford Mechanic: HDGENE, Ford Senior Master/Diesel/Trans replied 7 months ago

Hello, which four are not getting power, all in a row on the same side of the engine? Do all 8 injectors get a pulsing ground signal from pcm?

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Ford Mechanic: HDGENE, Ford Senior Master/Diesel/Trans replied 7 months ago

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Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 7 months ago
Jaybird61
Jaybird61, ASE Certified Master Technician
Category: Ford
Satisfied Customers: 2,088
Experience: Automotive Instructor at Palm Beach State College
Verified

Hi, My name is Jay.

With the key in the on position can you check to see if all eight injectors have battery power on the red wires at the injectors? Which injectors do not receive power or pulse signal from computer?

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Ford Mechanic: Jaybird61, ASE Certified Master Technician replied 7 months ago

Do you have any other questions for me?

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Jaybird61
Jaybird61
Jaybird61, ASE Certified Master Technician
Category: Ford
Satisfied Customers: 2,088
2,088 Satisfied Customers
Experience: Automotive Instructor at Palm Beach State College

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