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I have a 2003 4.7L and I just replaced the spark plugs and…

Customer Question
I have a 2003...

I have a 2003 4.7L and I just replaced the spark plugs and coil packs. My truck is still miss firing on 1&5. Can you tell me what's happening.

Mechanic's Assistant: How many miles are on the car? When was the last time the plugs were changed?

253,300 miles. I just changed the plugs twice.

Mechanic's Assistant: Are you fixing your 300 yourself? What have you tried so far?

I replaced all the coil packs and the spark plugs. Could it be the wiring going to the coil packs?

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

No, I believe that's all.

Submitted: 7 months ago.Category: Dodge
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Answered in 8 minutes by:
11/23/2017
Dodge Mechanic: HDGENE, ASE Master Tech replied 7 months ago
HDGENE
HDGENE, ASE Master Tech
Category: Dodge
Satisfied Customers: 6,588
Experience: 28 years Auto experience, Ford, GM, Chrysler, Asian & European
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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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Dodge Mechanic: HDGENE, ASE Master Tech replied 7 months ago

Hello, what did the first spark plugs and second plugs look like when removed from the misfiring cylinders? Does it have a delayed start up when cold and then clear up or it misfires all the time at idle and driving down the road?

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