How to inspect a spark plug for issues such as bridged gaps, deposit build-up, oil fouling, carbon fouling, normal burning, pre-ignition, overheating, and fused deposits on 2006 Mercury Mountaineer?

Check the spark plug of bridged and deposit build-up of either oil or carbon. Clean if necessary. Test oil fouling (wet black deposits), and carbon fouling (dry black deposits). Be aware of typical burning (tan or gray deposits) and over heating or fused deposits which reflect possible engine problems.

OEM 2006 Mercury Mountaineer Spark Plug

Ignition Spark Plug

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2 Spark Plugs found

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2006 Mercury Mountaineer 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 2006 Mercury Mountaineer Submodels:
- Luxury, Premier | 8 Cyl 4.6 L GAS
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2006 Mercury Mountaineer Spark Plug Part Number: AGSF-24N-X
$4.75 MSRP: $7.35
You Save: $2.60 (36%)
Ships in 1-3 Business Days
ADD TO CART
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 2006 Mercury Mountaineer Submodels:
- Base, Convenience, Luxury, Premier | 6 Cyl 4.0 L GAS

2006 Mercury Mountaineer Spark Plug

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2006 Mercury Mountaineer Spark Plug Parts Q&A

Q: How to inspect a spark plug for issues such as bridged gaps, deposit build-up, oil fouling, carbon fouling, normal burning, pre-ignition, overheating, and fused deposits on 2006 Mercury Mountaineer?
A: Check the spark plug of bridged and deposit build-up of either oil or carbon. Clean if necessary. Test oil fouling (wet black deposits), and carbon fouling (dry black deposits). Be aware of typical burning (tan or gray deposits) and over heating or fused deposits which reflect possible engine problems.