TSX Bad Plug Question

[JeffKeryk]

My friend's 2007 Acura TSX with the mighty K24 developed a #3 misfire, but not horrible like a bad coil.
Plugs have 35K, engine has 115K.
Here's the NGK stock plug; any idea what the problem is?
Thanks in advance!

 

[tasch72]

Whats the gap of the plug versus spec?

If you run your plugs too tight, they'll wear out prematurely

 

[slacktide_bitog]

What do the other ones look like? Are they as bad as #3?

 

[mk378]

If that's a base metal plug it's normal wear out in 30K miles. If it's supposed to be a platinum iridium etc. it may have been fake.

 

[JeffKeryk]

Marc pulled another plug and said it looked similar. I will post more when I see the car. He is replacing all 4 so he can use the car.
These are the stock NGKs that last for like 90K. I probably bought them off Amazon...

NGK Spark Plugs (USA),Inc. IZFR6K11​

 

[GSCJR]

Show us the porcelain too.

 

[slacktide_bitog]

Marc pulled another plug and said it looked similar. I will post more when I see the car. He is replacing all 4 so he can use the car.
These are the stock NGKs that last for like 90K. I probably bought them off Amazon...

they could be counterfeit

 

[The Critic]

Picture is a bit blurry and taken from a strange angle, hard to see what is happening. But it does look a bit fouled.

Those plugs usually last a lot longer than 30K. I wonder if you received fake ones.

 

[SatinSilver]

Buy from dealer, Rockauto, or even auto parts store. Not worth saving a few bucks to get fakes. Same thing applies with other auto parts especially wheel bearings.

 

[carviewsonic]

I bought my NGK's from the Honda dealer to avoid the possibility of getting counterfeit plugs. A bit pricier, but I was there anyway to pick up filters.

 

[road_rascal]

they could be counterfeit

Bingo. Had that issue a couple years ago when I did the plugs on my V6 Rav4. Bought them from either Amazon or ebay. Lasted about 18K before I started getting misfire codes. All the the plugs were shot. Got a real set from Napa.

 

[JeffKeryk]

Marc replaced the 4 plugs with NGKs from a retail store, probably NAPA.
Plugs 1 and 4 were rine, 2 and 3 were badly worn. He will bring it by tomorrow and I will clean the MAF and TB.
Here are the Amazon NGK plugs I bought in 2019.... I am leaning towards fake plugs.
Some things just ain't right!

 

[slacktide_bitog]

Bingo. Had that issue a couple years ago when I did the plugs on my V6 Rav4. Bought them from either Amazon or ebay. Lasted about 18K before I started getting misfire codes. All the the plugs were shot. Got a real set from Napa.

oh no! You had to deal with that on a Toyota transverse V6?

Those are almost impossible, so it's really sad you had to do it all over again so soon

 

[The Critic]

oh no! You had to deal with that on a Toyota transverse V6?

I don't know why you keep posting that nonsense. Toyota V6's are not even that bad to change plugs on.

 

[mightymousetech]

Marc pulled another plug and said it looked similar. I will post more when I see the car. He is replacing all 4 so he can use the car.
These are the stock NGKs that last for like 90K. I probably bought them off Amazon...

NGK Spark Plugs (USA),Inc. IZFR6K11​

Going to say those were most likely fakes then.

This is exactly why I only buy plugs at the dealer.

 

[road_rascal]

I don't know why you keep posting that nonsense. Toyota V6's are not even that bad to change plugs on.

First time took a little over 3 hours since I was taking my time. Second round was under 2 hours. Not that bad of a job. My old '99 24V Taurus was more of a pain.