How to check and replace the spark plug wires and Distributor Cap on Mercury Grand Marquis?

Inspect the wires visually while the engine is running in a dark, well-ventilated garage to maintain spark plug wires. Watch out for arcs or sparks that indicate wear and tear on them. One cylinder at a time, examine the wires starting with number one and mark them accordingly. A wire can be disconnected without removing the wire itself by using a removal tool or twisting and pulling the rubber boot. Ensuring a tight fit, push the wire and boot onto the spark plug. The metal connector inside the boot should be crimped when required. Clean the wire with a rag; check for burns, cracks or damage and inspect for corrosion at distributor end and snug fitting. Replace damaged wires with those made for your engine model and replace one at a time so that you do not disturb firing order. Replace 1991 and earlier models' distributor cap and rotor if they are worn out, damaged or cracked or have carbon tracks or worn terminals.

Genuine Mercury Grand Marquis Spark Plug Wire

Spark Plug Ignition Wires

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Mercury Grand Marquis Kit
Part Number: E8PZ-12259-A
$32.03 MSRP: $51.09
You Save: $19.06 (38%)
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Product Specifications
- Other Name: Cable Set
- Replaces: E6PZ-12259-H
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1980-1989 Mercury Grand Marquis | 8 Cyl 4.2L, 8 Cyl 5.0L, 8 Cyl 5.8L | 3AT, 3AT C4, 3AT C6, 4AT AOD

Mercury Grand Marquis Spark Plug Wire

Spark Plug Wire in the Mercury Grand Marquis automobiles are a significant factor of the ignition procedure through conducting an electrical current from the ignition coil to the spark plug. Technically referred to as high tension leads or HT leads, these cables therefore contain insulation characteristics which are heat resistant with a view of avoiding arcing as well as being manufactured to last long. The spark plug wires are of the correct length while fitting them they are fixed to the engines' and the vehicle's terminals are made of metals. Modern technologies are incorporated to cut down sitting and radio frequency interference while high-quality wires demand brass terminals that are anti-corrosive. Many older engines do feature a coil wire but in the contemporary engines, coil packs or even individual ignition coils are situated directly on the spark plugs voiding the standard spark plug wires. These wires if maintained properly and placed correctly enhances the performance of the engine as well as its durability.

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Mercury Grand Marquis Spark Plug Wire Parts Questions & Experts Answers

Kit
E8PZ-12259-A
Q: How to check and replace the spark plug wires and Distributor Cap on Mercury Grand Marquis?
A: Inspect the wires visually while the engine is running in a dark, well-ventilated garage to maintain Spark Plug wires. Watch out for arcs or sparks that indicate wear and tear on them. One cylinder at a time, examine the wires starting with number one and mark them accordingly. A wire can be disconnected without removing the wire itself by using a removal tool or twisting and pulling the rubber boot. Ensuring a tight fit, push the wire and boot onto the spark plug. The metal connector inside the boot should be crimped when required. Clean the wire with a rag; check for burns, cracks or damage and inspect for corrosion at distributor end and snug fitting. Replace damaged wires with those made for your engine model and replace one at a time so that you do not disturb firing order. Replace 1991 and earlier models' distributor cap and rotor if they are worn out, damaged or cracked or have carbon tracks or worn terminals.

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