How to inspect a spark plug for issues such as bridged gaps, deposit buildup, oil fouling, carbon fouling, normal burning, preignition, overheating, and fused deposits on 2005 Ford Mustang?

Inspect the spark plug for bridged gaps and deposit buildup from oil or carbon fouling. Clean if necessary. Check for normal burning, preignition, overheating signs, and fused deposits. Address oil leaks and ensure proper ignition timing and fuel type to avoid damage, replacing the spark plug if needed.

OEM 2005 Ford Mustang Spark Plug

Ignition Spark Plug

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2 Spark Plugs found

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2005 Ford Mustang Spark Plug Part Number: PZK-1F
$10.25 MSRP: $20.73
You Save: $10.48 (51%)
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Product Specifications
- Replaced by: PZK-1F-X
- Item Weight: 0.30 Pounds
- Item Dimensions: 3.9 x 1.1 x 1.1 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: PZK-1F
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
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Fits the following 2005 Ford Mustang Submodels:
- Bullitt, GT, Shelby GT | 8 Cyl 4.6 L GAS
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2005 Ford Mustang Spark Plug Part Number: AGSF-24N-X
$4.75 MSRP: $7.35
You Save: $2.60 (36%)
Ships in 1-3 Business Days
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Product Specifications
- Replaces: SP-412, AGSF-24N
- Condition: New
- Fitment Type: Direct Replacement
- SKU: AGSF-24N-X
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following 2005 Ford Mustang Submodels:
- Base | 6 Cyl 4.0 L GAS

2005 Ford Mustang Spark Plug

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2005 Ford Mustang Spark Plug Parts Q&A

Q: How to inspect a spark plug for issues such as bridged gaps, deposit buildup, oil fouling, carbon fouling, normal burning, preignition, overheating, and fused deposits on 2005 Ford Mustang?
A: Inspect the spark plug for bridged gaps and deposit buildup from oil or carbon fouling. Clean if necessary. Check for normal burning, preignition, overheating signs, and fused deposits. Address oil leaks and ensure proper ignition timing and fuel type to avoid damage, replacing the spark plug if needed.