How to inspect a spark plug for a bridged gap and signs of fouling on 2005 Ford Freestar?

Check the spark plug on bridged gaps and accumulation of deposits due to oil or carbon foulages. Clean if necessary. Fouling oil (wet, black deposits) and carbon fouling (black, dry deposits). Check normal burning (light tan deposits) and overheating or pre-ignition, and a new spark plug may be needed.

OEM 2005 Ford Freestar Spark Plug

Ignition Spark Plug

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2005 Ford Freestar Spark Plug Part Number: AGSF-42F-MX
$5.55 MSRP: $8.58
You Save: $3.03 (36%)
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Product Specifications
- Replaces: AGSF-42F-M, SP-486
- Condition: New
- Fitment Type: Direct Replacement
- SKU: AGSF-42F-MX
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following 2005 Ford Freestar Submodels:
- Base, Limited, S, SE, SEL, SES | 6 Cyl 3.9 L GAS, 6 Cyl 4.2 L GAS

2005 Ford Freestar Spark Plug

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2005 Ford Freestar Spark Plug Parts Q&A

Q: How to inspect a spark plug for a bridged gap and signs of fouling on 2005 Ford Freestar?
A: Check the spark plug on bridged gaps and accumulation of deposits due to oil or carbon foulages. Clean if necessary. Fouling oil (wet, black deposits) and carbon fouling (black, dry deposits). Check normal burning (light tan deposits) and overheating or pre-ignition, and a new spark plug may be needed.