Spark Plugs - Please Read

[Impulsed7]

Just got the CEL for misfire 0300 or something like that? Gonna check the plugs tomorrow.

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[EcoSwag1990]

Ok guys so I just made an attempt to swap out my spark plugs but I could not get that damn thing to turn so I just gave up after trying do one. I'll try again tomorrow. The stock spark plugs need to be turned to the left (counterclockwise) to be removed right? I felt like I was going to break something

Up to that point everything was pretty simple

 

[wmsky33]

Ok guys so I just made an attempt to swap out my spark plugs but I could not get that damn thing to turn so I just gave up after trying do one. I'll try again tomorrow. The stock spark plugs need to be turned to the left (counterclockwise) to be removed right? I felt like I was going to break something

Up to that point everything was pretty simple

Yes, CCW to remove.

You are trying to change the plugs while the engine is cold, right? Never try to change the plugs unless the engine is cold. The threads of a spark plug are steel and expand into the threads of the cylinder head when they get hot. I'm assuming that the head is aluminum which is a softer metal than steel. If you try to forcibly remove a spark plug and it has not had a chance to cool off and contract, you could strip the threads in the head.

I can't tell you how much effort to put into removing the plugs, but sometimes it takes quite a bit. How many miles are on the plugs, and who put them in? If they are the factory-installed plugs, then I can't imagine that they were overtightened, so I'd feel pretty safe putting more effort into removing them. As long as everything is cold, if putting more effort into removing the plugs strips the threads, I would say that you are covered under warranty. There is no reason why simply removing the factory plugs should cause any problem.

 

[EcoSwag1990]

Thanks. Heat was probably the problem, I'll let it sit for before I go at it again tonight. I didn't give it any time to cool last night, I probably was under the hood 15mins after making a 40min drive lol

 

[smdandb2]

Thanks. Heat was probably the problem, I'll let it sit for before I go at it again tonight. I didn't give it any time to cool last night, I probably was under the hood 15mins after making a 40min drive lol

For sure let it cool down.

I changed my plugs first thing in the morning, and the stockers were easy to get out.

 

[EcoMax]

NGK v-power 4554 plugs

Are the NGK V-power 4554 plugs ok to use in the 2015 ecoboost 2.3l?

 

[Impulsed7]

I checked mine, only one was even close to the right gap.

 

[EcoSwag1990]

Got mine swapped out earlier. I let it cool down this time and it was easy. They were relatively dirty for 8,000 miles. I noticed things felt a bit smoother driving afterward

 

[friendgr]

How do you measure such a tiny gap with accuracy?

 

[dgc333]

Quite easy with a set of feeler gauges. Most sets come with gauges in 0.001" to 0.050" in .001" increments with a couple on the low end in 0.0005" increments.

 

[Nihil]

How do you measure such a tiny gap with accuracy?

http://customtoolz.com/products/spark-plug-gap-gauge.html

 

[ryant601]

How are you supposed to gap NGK-6510s, I've gapped non iridiums before but everyone is saying don't dare do such a thing. Do they come reasonably gapped from the factory?

 

[MAPerformance]

How are you supposed to gap NGK-6510s, I've gapped non iridiums before but everyone is saying don't dare do such a thing. Do they come reasonably gapped from the factory?

You open them with pliers then you can close the gap by lightly tapping them on wood.

 

[Dannyho]

How are you supposed to gap NGK-6510s, I've gapped non iridiums before but everyone is saying don't dare do such a thing. Do they come reasonably gapped from the factory?

search youtube for gapping iridium plugs. some guys do it as above, some guys use one of these to open or close them and feeler gauges to check the gap. the latter of which I feel more comfortable with

 

[EcoSwag1990]

Yea I just used something like that ^ it was easy. it didn't feel like they were breaking

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