FAQs—Ford Spark Plug
- What are the common features to look for in a spark plug for a Ford vehicle?
When choosing for an appropriate spark plug, it is best to ask for an expert's recommendation. Generally, a factory plug is employed for its emission quality, reliability, and correct heat range. Normally, a small plug gap is used in a forced induction engine, while a large gap is required for some Ford vehicles such as the Mustang.
- My Ford usually runs smooth on highways but would give rough idle at times. Codes indicate misfires to related cylinder. I already changed the oil and bought new spark plugs, fuel filter, new ignition coil, and cables. Did I miss anything?
There are many possible causes of rough idle and misfires: a faulty crankshaft position sensor, poor fuel quality, mechanical engine problem, defective fuel system, unclean fuel filters, malfunctioning fuel pressure regulators, and damaged idle air control valves. Make sure to purchase a good quality Ford spark plug as an inferior brand can make your engine give off rough and twitchy noise while releasing great vibrations.
- I recently changed my Ford spark plug. While driving, I notice my car running quite sluggish. Is there something wrong with my new spark plug? Or something else may be wrong?
When your Ford vehicle becomes unresponsive when you press down the pedal or gives delayed response, you may have a defective Ford spark plug. Your new plug can cause the lack of response during acceleration. Make sure to purchase only a premium-quality spark plug and have it installed by a skilled mechanic.
- I currently have a double platinum spark plug. Can I replace it with another kind of plug? How often do I need to change my Ford spark plug?
It is highly recommended to use the same kind of plug as the one your Ford is originally provided with. Do not just replace with a copper spark plug or single platinum plug, although you may use a platinum-iridium combination plug. Make sure to verify first with a certified mechanic. Generally, a spark plug must be replaced every 30,000 miles, even for extended-life plugs. The numbers may differ and are subject to the manner on how you use your vehicle and how often you maintain your spark plugs and ignition wires. Preventative maintenance is advisable to avoid misfires that can result in catalytic converter malfunctioning.
- I want to get a new spark plug for my Ford. How much will it cost me including the labor?
Depending on the brand and type of plug, a spark plug replacement will averagely cost between $100 and $170. Service charge will start from $110 to $150. Components, on the other hand, are estimated between $10 and $20. It is best to ask for an estimate based on your vehicle type and location.
- Why do my spark plugs eject from the cylinder heads?
There are many reasons that cause the Ford spark plug to be ejected from its cylinder. It may be because it is over-torque and under tightened during manufacturing production or due to inferior material of cylinder heads. Whatever the cause, spark plug ejection is unsafe and hazardous because a loose plug can fire the fuel vapor up, which may lead to engine fires.