What's the Mazda CX 9 spark plug torque?
If you have a very reliable and sensitive torque wrench, the Mazda CX-9 shop manual specification for tightening the spark plugs is 14 lb-ft or 18.98 N-m. If you insist on using a torque wrench, please verify the correct torque specifications for your vehicle.
What are the signs of bad spark plugs in Mazda CX-9?
The most common signs of bad spark plugs in Mazda CX-9 are poor acceleration or hesitation, rough idle, engine misfires, poor fuel economy, check engine light illuminates, engine knocking noise, and sometimes hard starting. In worst case scenario, if the spark plugs are in really bad condition, the engine will not start.
How often should I change the spark plugs on my CX-9?
The maintenance schedule in the owner's manual specifies that the spark plugs should be changed every 40,000 miles (or every 64,000 km). For more, please check out all of the 2016-2021 Mazda CX-9 DIY Repair & Maintenance Guides.
What are some of the Mazda CX 9 fuel consumption problems?
If you see noticeable loss of performance or engine hesitation with high fuel consumption in your Mazda CX-9, you should definitely check the condition of the spark plugs and ignition coils.

How do you change spark plugs on a Mazda CX-9?
1:4330:20DIY Mazda CX-9 Spark Plug Change 2016 2017 2018 2019 2020 2021YouTubeStart of suggested clipEnd of suggested clipYou need to remove this metal bracket. And this will require some of the eight millimeter. End or itMoreYou need to remove this metal bracket. And this will require some of the eight millimeter. End or it'll require an eight millimeter and a ten millimeter socket there are several bolts of each.
Is the Mazda CX-9 a 4-cylinder?
The 2021 Mazda CX-9 delivers power through a 6-speed automatic transmission to all four wheels from a turbocharged 2.5-liter 4-cylinder engine.
How do you change the spark plugs on a 2012 Mazda CX-9?
0:0012:08How to Replace the Spark Plugs on a 2006-2015 Mazda CX-9 with 3.7L ...YouTubeStart of suggested clipEnd of suggested clipSo when you go to unplug this mass airflow since there's a little red tab to underneath that youMoreSo when you go to unplug this mass airflow since there's a little red tab to underneath that you need to pull and slide it towards you and then you can squeeze the tab.
How much is a tune up for a Mazda CX-9?
The average cost for Mazda CX-9 Engine Tune-Up is $358.
How long will a Mazda CX-9 last?
The Mazda CX-9 is a robust SUV that can last between 200,000 – 250,000 miles on average when properly maintained, driven conservatively and well looked after. Based on an annual mileage of 15,000 miles, it can last 13 to 17 years of service before breaking down or requiring uneconomical repairs.
Is the Mazda CX-9 a reliable car?
Is the CX-9 a reliable car? Consumer Reports' used Mazda CX-9 reliability ratings show good things for this SUV. The 2018 and 2019 model years have a reliability rating of 4/5 while the 2020 and 2021 Mazda CX-9 both have perfect reliability ratings.
Are Mazda CX-9 expensive to repair?
Mazda CX-9 Maintenance Costs. A Mazda CX-9 will cost about $7,574 for maintenance and repairs during its first 10 years of service. This beats the industry average for popular SUV models by $1,559. There is also a 21.93% chance that a CX-9 will require a major repair during that time.
Is it expensive to maintain a Mazda CX-9?
How Frequently Does a Mazda Cx-9 require maintenance? Overall - the Mazda Cx-9 has yearly car maintenance costs total to $539 .
Does Mazda CX-9 have a spare tire?
Your Mazda has a temporary spare tire. The temporary spare tire is lighter and smaller than a conventional tire, and is designed only for emergency use and should be used only for VERY short periods. Temporary spare tires should NEVER be used for long drives or extended periods.
How many spark plugs should I change at a time?
To help further reduce the risk of having debris or any other object fall down into the cylinder, I recommend only checking or changing one spark plug at a time.
How to tighten spark plugs?
Attach the 3/8" drive ratchet and continue tightening the new spark in the clockwise direction until it is snug.
How to tell if ignition coil is bad?
If necessary, attach an extension bar to your 14mm spark plug socket and the 3/8" drive ratchet.
What is the NGK part number?
The NGK part number is NGK DILKAR7M8 (also known as # NGK 90288).
What is the code for a service engine soon?
If you see a CEL (check engine light) or SES (service engine soon) warning indicator on your SUV's gauge cluster, use an OBDII scanner (also known as an OBD2 scan tool) to check for an ignition coil related DTC (diagnostic trouble code) such as P0350, P0351, P0352, P0353 and P0354.
Can you use anti seize grease on spark plugs?
Most spark plug manufacturers recommend that you do NOT apply anti-seize lubricant grease to the threads of the new spark plug. Anti-seize grease is a lubricant and can easily lead to over tightening.
Symptoms
When one or more of the spark plugs start to fail or has failed in your CX-9, it will cause the engine to misfire and the check engine light may illuminate in the instrument cluster. To perform further diagnostics, you will need to connect OBD2 scanner to your vehicle.
What causes spark plugs to go bad in Mazda CX-9?
A spark plug is like a canary in a coal mine for the engine. Inspecting the condition of the spark plugs in your CX-9 can help you determine the health of the engine.
How to replace spark plugs in CX-9
If the spark plugs go bad in your Mazda CX-9, you must replace them with new ones. You don’t necessarily have to visit a workshop to replace the spark plugs, you can do it at home by following a few simple steps. Before you begin, make sure the engine is cold to prevent burn injury.
Which type of spark plugs to use in CX-9?
There are four main types of spark plugs: copper, platinum, double platinum and iridium. Generally all the spark plugs have similar type of internal components, but where they differ is at the tip where the spark happens.
Use OBD2 scanner for diagnosis
Since Mazda CX-9 is equipped with on-board diagnostics (OBD), a fault diagnosis can provide initial indications of where the malfunction is located.
Conclusion
If you see noticeable loss of performance or engine hesitation with high fuel consumption in your Mazda CX-9, you should definitely check the condition of the spark plugs and ignition coils.
How long do spark plugs last?
The basic design and task of the spark plug has changed little over the last 100 years. They sit on top of the combustion chamber and ignite the air/fuel mixture and start the power stroke of the engine. Something that has changed about modern spark plugs is that many of them use iridium, don’t need gapped, and can last for 100k miles ...
Why does my CX-9 accelerate so slow?
Accelerates Slower than Normal. As you ask your CX-9 for more power, the fuel and ignition systems respond. If acceleration has diminished, it should be felt. The less cylinders that your engine has, the more that one cylinder not firing properly will have. If you have one or more bad spark plugs, it’ll cause the acceleration ...
What is the most common symptom of bad spark plugs?
Misfiring is the most common symptom of bad spark plugs. All of the other symptoms are a result of the misfiring itself. The real question is, what is causing the misfire? There is more to your CX-9’s ignition system than just the plugs. There’s also coil packs and spark plug wires.
What does it mean when spark plugs are bad?
This means that something such as bad coil packs will produce the same results and feel as bad plugs. On the left is a fouled spark plug. on the right is the exact same type of plug new.
What is the left spark plug?
On the left is a fouled spark plug. on the right is the exact same type of plug new.
Why does my spark plug feel rough?
When a spark plug is misfiring, it is often most pronounced at idle speed. This is because when the engine turns slower, it is easier to detect . You’ll feel a rough vibration.
Do spark plugs go bad?
That being said, they still can go bad. The good news is, that if you do need replace them all, they are very affordable.
When should you replace spark plugs?
Some cars require regular replacement at 30k, 60k or 100k miles. It is possible in some cases that a spark plug might fail before the service schedule , but it’s not typically common.
What are spark plugs and how do they work?
Spark plugs are one of the key components of your vehicle’s ignition system. They ignite gasoline and air inside of your engine. This gives your engine the power to propel you down the road. The spark plug takes high voltage electricity from the ignition coil and creates a spark at just right moment during the engine’s combustion cycle. This gives the engine the best mix of power, fuel economy and low emissions. However, the electrode at the end of the spark plug eventually wears out and can cause performance issues.
Can high speed driving cause spark plugs to wear out?
High-speed driving may accelerate spark plug wear. Consider earlier than required inspection and tune-up if you operate the car in severe conditions.
Should spark plug wires be replaced?
If your vehicle is equipped with spark plug wires (as opposed to a coil-on-plug system), the wires should be replaced at the same time. This may increase the cost of your repair.
Do you need to remove the intake manifold when replacing spark plugs?
Some engines require that the intake manifold be removed while replacing spark plugs. This may increase the parts and labor cost for the repair.
Is it safe to drive with worn spark plugs?
Yes, but spark plugs that are worn enough to cause engine-misfiring have the potential to cause engine damage and overheating of the catalytic converter. Regardless of the age of the plugs, or mileage, if the engine misfires or runs poorly, the plugs should be inspected for defects. Generally, spark plug failure will not keep the engine from running, but in cases of extreme wear, you may experience a limitation in the speed at which you can drive the car. If the maintenance schedule says the plugs should be replaced, it is best to do so promptly.
What plugs did the CX-9 use?
Just did a 100k on a CX-9 and used the autolite iridium. Factory plugs was a motorcraft-autolite platinum. They were well worn out. Runs well with no issues. Customer is happy and should make it another 100k easy.
Who makes motorcraft plugs?
Historically, Autolite made Motorcraft. Imho, all available plugs are good, but many disagree.
Is Bosch a good plug?
I use a very small amount on plugs still. Not as much as the old uncoated ones but still a little. And the newer Bosch are a good plug. I have used them in Fords, Toyotas, and 1 other car with no issues. I just went with the autolite Iridium as they are a OE maker for that motor and were cheaper at the time.
