Replacement of spark plugs
#1
Replacement of spark plugs
1998 Mercury Grand Marquis
Location: Zip code 33027
==================
I want to know the cost of replacing spark plugs (material and labor) as I believe I was overcharged at a local shop.
Please advise.
Location: Zip code 33027
==================
I want to know the cost of replacing spark plugs (material and labor) as I believe I was overcharged at a local shop.
Please advise.
#2
I was quoted $600 for a diagnostic and tune up which involved replacing the sparkplugs. I thought they were crazy so I did it myself. After finishing, I realized why they charge so much. It isn't very difficult but you have to remove the fuel rails and I damaged two of the injector O rings in the process. You might even consider having replacements on hand if you are going to do it yourself.
#6
I was quoted $600 for a diagnostic and tune up which involved replacing the sparkplugs. I thought they were crazy so I did it myself. After finishing, I realized why they charge so much. It isn't very difficult but you have to remove the fuel rails and I damaged two of the injector O rings in the process. You might even consider having replacements on hand if you are going to do it yourself.
#10
Spark Plugs '92 -'10 Grand Marquis
The best type and part number for the 1992 - 2010 Grand Marquis is the BOSCH #9606, which is a Double-Iridium type that is superior to the OEM platinum type that's fitted at the factory, and it has exclusive features that other plugs just don't have.
Currently available at ROCKAUTO.COM for $5.02 each.
I have used these plugs in my '95 Grand Marquis restoration project car, with excellent performance and fuel economy, regardless of altitude and/or outside air temperature.
Silky-smooth idle, excellent throttle response, and excellent fuel mileage on 87-octane gas (with 10% ethanol).
If you have the twin coil packs, replace the ignition wires with Bosch Premium Mag-Core ignition wires.
I got my wires from Amazon.com.
When changing plugs and wires, it's a good time to remove and inspect the coil packs for carbon tracking or other problems.
Test the coil resistance with an Ohm meter.
Should be 0 to 1 Ohms for the primary - (lower is better).
14.5 Ohms is ideal for the secondary.
If coils test good, spray them with WD-40, then wash them thoroughly with soap and water.
Spray the terminals with WD-40 before re-installing the coils.
When done right, your ignition system should be trouble-free for 75,00 - 100,000 miles.
Currently available at ROCKAUTO.COM for $5.02 each.
I have used these plugs in my '95 Grand Marquis restoration project car, with excellent performance and fuel economy, regardless of altitude and/or outside air temperature.
Silky-smooth idle, excellent throttle response, and excellent fuel mileage on 87-octane gas (with 10% ethanol).
If you have the twin coil packs, replace the ignition wires with Bosch Premium Mag-Core ignition wires.
I got my wires from Amazon.com.
When changing plugs and wires, it's a good time to remove and inspect the coil packs for carbon tracking or other problems.
Test the coil resistance with an Ohm meter.
Should be 0 to 1 Ohms for the primary - (lower is better).
14.5 Ohms is ideal for the secondary.
If coils test good, spray them with WD-40, then wash them thoroughly with soap and water.
Spray the terminals with WD-40 before re-installing the coils.
When done right, your ignition system should be trouble-free for 75,00 - 100,000 miles.
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