Factory Spark Plugs

[barnburner]

Are the NGK laser iridium plugs that much better than the factory ones? For MPG and HP?

 

[fishycomics]

What are the actual toy Rolla plugs, do they say NGK. I will have to inspect mine one day. My Honda was Just that NGK and I wil lstik with them and not Bosh!!!

 

[barnburner]

Denso Iridium's

 

[Donabed Kopoian]

I haven't heard anything. Don't really see how plugs can increase power. Either they ignite 100% of the time like they are supposed to, or they don't.

 

[Scott O'Kashan]

Are the NGK laser iridium plugs that much better than the factory ones? For MPG and HP?

 

[Scott O'Kashan]

Are the NGK laser iridium plugs that much better than the factory ones? For MPG and HP?

 

[fishycomics]

Be on my List to Inspect the Plugs as time nears but still Maintenance free Denso and NGK are what I think, and Bosh as a substitute. if found in your owner's manual, under the hood for gap info?

I ask for gapped one's and I still check the gap?

 

[Donabed Kopoian]

The manual says not to gap them, for whatever reason.

 

[GotWheels]

The manual says not to gap them, for whatever reason.

I've heard that inexperienced people often damage them while gapping against that thin center electrode. Maybe that's why. A damaged plug can cause a lot more problems for an engine than one slightly off gap.

 

[Donabed Kopoian]

That's the only thing I can think of.

 

[Scott O'Kashan]

Spark plug gap should always be checked before installation. "Pre-gapped", spark plugs can have the gap change during shipping as the spark plug is bounced around, (I've seen this myself). NGK also states spark plug gap should always be checked and adjusted as needed before installation.

 

[Donabed Kopoian]

I didn't gap the plugs in my '08 Matrix per the manual, and had an intermittent miss on wide-open throttle that was fixed by (wait for it) ... gapping the plugs, LOL! But since there isn't a specification, I just set it to 0.050" if I'm not mistaken (the gap was bigger on all 4 plugs out of the box). If someone can find it for the 1ZZ-FE and 2ZR-FE, it oughta be stickied.

 

[Scott O'Kashan]

That is one weird manual and I would never follow that recommendation. That has to be some kind of mistake.

Funny story.:laughing:

 

[Donabed Kopoian]

It's literally in the car's manual ... from Toyota.

 

[Scott O'Kashan]

That's a recommendation I would never follow.

 

[Kev250R]

I agree with Scott, I always check the gap on my plugs, plus you never know how they were treated before you got them (think things never get dropped at the parts store? LOL) Plus several years ago I developed an ignition problem on a Dodge Ram P/U I used to own which turned-out to be due to mis-gapped plugs. Live and learn

Kevin

 

[stvotw]

It's literally in the car's manual ... from Toyota.

But then it lists a gap of 0.043.
Strange.

 

[Donabed Kopoian]

What page was that on?

 

[stvotw]

Page 422. Right above where it says not to adjust gap!

 

[Donabed Kopoian]

Go figure ... LOL!

 

[Donabed Kopoian]

I got the same in the manual for my '14 S ... in my '08 Matrix, it didn't even give me the gap specification, just said not to adjust it...

 

[Donabed Kopoian]

 

[fishycomics]

pg 431 on the 2010

Yep I was gonna say 1.1mm Lol and it's not located under the hood but the plugs Lol

 

[Donabed Kopoian]

So ... does Toyota expect me to travel all of the O'Reillys in SoCal to find the 4 plugs with the perfect gap? LOL! Reminds me of Clerks, the dude that was trying to find the perfect carton of eggs and claimed that he couldn't mix to match.

 

[Donabed Kopoian]

I should get the pictures up here of typos I've seen in Chilton's manuals. Scott would have a field day with them.