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Miss fire at start up ford f350 5.4. 2002 cylinder #4. Tried…

Customer Question
Miss fire at start...

Miss fire at start up ford f350 5.4

Mechanic's Assistant: What year is your F350?

2002 cylinder #4

Mechanic's Assistant: Are you fixing your F350 yourself? What have you tried so far?

Yes tried switching fuel injectors # 4 for # 1 same problem

Mechanic's Assistant: Has the vehicle turned into a gas hog? And how does it start -- same as usual?

Starts on 7 cylinder but 30 sec it runs just fine

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

About a month a go replaced radiator and the over heated replaced thermostat over heating gone

Submitted: 10 months ago.Category: Ford
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Answered in 5 minutes by:
10/2/2017
Ford Mechanic: john -aka eauto, The Car Guy replied 10 months ago
john -aka eauto
john -aka eauto, The Car Guy
Category: Ford
Satisfied Customers: 17,495
Experience: ase tech over 15 years in the field
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did you check the spark plug and the coil?

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Customer reply replied 10 months ago
I did replace coil same problem
Customer reply replied 10 months ago
Im fine typing
Ford Mechanic: john -aka eauto, The Car Guy replied 10 months ago

what about the spark plug?

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Customer reply replied 10 months ago
Im waiting for an answer to my question miss fire # 4 cylinder
Ford Mechanic: john -aka eauto, The Car Guy replied 10 months ago

did you check or change the spark plug??? any other codes other then the missfire?

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Customer reply replied 10 months ago
no did not change spark plug no other codes
Ford Mechanic: john -aka eauto, The Car Guy replied 10 months ago

primary ignition is the #1 cause plug or coil...I would change the spark plug

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Customer reply replied 10 months ago
are you going to take 5 minutes every time we switch from question
Customer reply replied 10 months ago
ok thanks
Ford Mechanic: john -aka eauto, The Car Guy replied 10 months ago

Please let me know if you need anything else on it, just reply back and we will continue
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you can always come back to this conversation and ask me any follow up question you may have on this issue
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John S
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