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

Check the spark plug, look for bridged gaps and deposition of oil or carbon foulings. Clean if necessary. Spots of oil fouling (wet, black deposits) and carbon fouling (black, dry deposits). Check normal burning (light tan deposits), overheating or damage, and change a spark plug as required.

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 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 Mercury Mountaineer Spark Plug

Ignition Spark Plug

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6 Spark Plugs found

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Mercury Mountaineer Spark Plug Part Number: PZK-1F
$10.25 MSRP: $20.73
You Save: $10.48 (51%)
ADD TO CART
Product Specifications
- Replaced by: PZK-1F-X
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2006-2007 Mercury Mountaineer | Luxury, Premier | 8 Cyl 4.6 L GAS
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Mercury Mountaineer Spark Plug Part Number: HJFS-24FP-X
$9.73 MSRP: $15.06
You Save: $5.33 (36%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaces: SP-509, HJFS-24FP
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2008-2010 Mercury Mountaineer | Premier | 8 Cyl 4.6 L GAS
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Mercury Mountaineer Spark Plug Part Number: AGSF-32P-MX
$6.04 MSRP: $9.35
You Save: $3.31 (36%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaces: AGSF-32P-M, AGSF-32P-MF4, SP-493
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2002-2005 Mercury Mountaineer | Base, Convenience, Luxury, Premier | 8 Cyl 4.6 L GAS
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Mercury Mountaineer Spark Plug Part Number: AGSF-32F-MX
$5.41 MSRP: $8.36
You Save: $2.95 (36%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaces: AGSF-32F-SM, AGSF-32F-M, SP-470-X, SP-470, SP-432, AGSF-32F-SMX, AWSF-32F-
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997-2001 Mercury Mountaineer | Base | 8 Cyl 5.0 L GAS
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Mercury Mountaineer Spark Plug Part Number: AGSF-24N-X
$4.22 MSRP: $6.53
You Save: $2.31 (36%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaces: SP-412, AGSF-24N
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2006-2010 Mercury Mountaineer | Base, Convenience, Luxury, Premier | 6 Cyl 4.0 L GAS
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Mercury Mountaineer Spark Plug Part Number: AGSF-22F-MX
$5.52 MSRP: $8.76
You Save: $3.24 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaces: SP-500, AGSF-22F-M
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998-2005 Mercury Mountaineer | Base, Convenience, Luxury, Premier | 6 Cyl 4.0 L FLEX, 6 Cyl 4.0 L GAS

Mercury Mountaineer Spark Plug

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Mercury Mountaineer Spark Plug Parts and Q&A

Spark Plug
AGSF-32P-MX
Q: How to inspect a spark plug for issues such as bridged gaps, deposit buildup, oil fouling, carbon fouling, normal burning, pre-ignition, overheating, and fused deposits on Mercury Mountaineer?
A: Check the spark plug, look for bridged gaps and deposition of oil or carbon foulings. Clean if necessary. Spots of oil fouling (wet, black deposits) and carbon fouling (black, dry deposits). Check normal burning (light tan deposits), overheating or damage, and change a spark plug as required.
Spark Plug
PZK-1F
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 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.