How do these spark plugs look to you ? - Toyota Yaris Forums

Hershey · 03-29-2014, 09:25 PM

Had them changed out at Toyota service center while in for suspension work . Replaced with DENSO SK16R11 plugs at $8.99 each . Car was idling rough , so had them replaced , seems no better . The tech lost one of the nuts for the engine cover and will likely have to order one at $2.35 . Here are pictures of used plugs at NGK , http://www.ngksparkplugs.com/tech_su...qs/faqread.asp . Which one looks close to these ? Don't look that healthy to us .

fnkngrv · 03-29-2014, 10:27 PM

I needed to replace the nuts myself a few times. I just purchased them at local hardware with the correct thread and have done fine. NO worrying about ordering any. Just a thought.

fnkngrv · 03-29-2014, 10:34 PM

Check Spark Plug Condition

Looks like you could have a mixture of a couple conditions there.

CTScott · 03-29-2014, 10:37 PM

Those plugs don't look bad for 73K miles.

Shroomster · 03-29-2014, 10:40 PM

I like how ash fouled and worn are the same image....

Sent from my C6902 using Xparent Skyblue Tapatalk 2

Hershey · 03-29-2014, 11:31 PM

Quote:

Originally Posted by fnkngrv

Check Spark Plug Condition

Looks like you could have a mixture of a couple conditions there.

What two conditions are you referring too? Is that with the NGK pics ? I was thinking that the PCV may be not working properly. Maybe I will clean it out or get a new one. Thanks

Hershey · 03-30-2014, 10:18 AM

Quote:

Originally Posted by fnkngrv

I needed to replace the nuts myself a few times. I just purchased them at local hardware with the correct thread and have done fine. NO worrying about ordering any. Just a thought.

Thanks , but I expect to get it back the way it went in with all the parts . It's less than $2.50 . They're going to try to locate it , if not , hopefully a new one through parts .

esse10 · 03-30-2014, 05:38 PM

looks like a candidate for a Seafoam cleaning at the Intake manifold. Did wonders for my 200k mile new beetle.

Exiwolfman · 03-30-2014, 06:02 PM

Seafoam ...does really work ? I did my plugs at aground 140km and they looked clean nothing like urs ....also did u clean ur throttle body mine was dirty would stick and caused bad ideal , easy to do just make sure u have key on and someone on the throttle pedal when cleaning or ur get we'll May engine light .

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jack black · 03-31-2014, 11:00 AM

Little wear but lots of carbon. Any oil consumption? Is this short trip driving? If so, this car needs some hwy driving or Italian tuneup.

fnkngrv · 03-31-2014, 11:06 AM

Like Scott said with over 70k the results are not bad per se. Personally I would verify after 15-20k more miles how new ones look just for due diligence sake.

From my m-o-b-i-l-e

Hershey · 03-31-2014, 10:45 PM

Quote:

Originally Posted by jack black

Little wear but lots of carbon. Any oil consumption? Is this short trip driving? If so, this car needs some hwy driving or Italian tuneup.

No oil consumption . Usually 50 or more miles per drive on urban roads , interstate and some city . Did use some Chevron Techron for the tank before removal of the NGK and install of the new Denso , probably around 300 miles of driving of Techron on the NGK .

Hershey · 03-31-2014, 10:53 PM

More pics of NGK the plugs .

bronsin · 04-01-2014, 06:10 AM

They are OK. Just gap them and put them back in for another 200,000k miles.

jack black · 04-01-2014, 11:33 AM

Quote:

Originally Posted by Hershey

More pics of NGK the plugs .

Are these the same plugs as the OP? They look much better in this picture indeed.

Hershey · 04-01-2014, 12:31 PM

Yes , these are the NGK IFR5A11 installed at the factory .

Hershey · 04-05-2014, 10:28 PM

Got the nut in the mail and put it on . The car is still idling a bit rough . Oh well

.

jack black · 04-05-2014, 11:05 PM

Have you cleaned the TB and checked the engine mounts?

03-29-2014, 10:27 PM	#2
fnkngrv Mr. 155 and climbing View User's Garage Drives: Seriously Modded 07 Sedan Join Date: Jun 2006 Location: In The Hotbox Posts: 4,742	I needed to replace the nuts myself a few times. I just purchased them at local hardware with the correct thread and have done fine. NO worrying about ordering any. Just a thought. __________________ Team Tiamat Racing on Facebook Youtube Channel: Team Tiamat Racing *Class record holder in Land Speed @ 154.5mph for 1.5 mile and 145.5mph in the mile in the F (2.016 to 3.014 L), G (1.524 to 2.015 L), and H (1.016 to 1.523 L) classes.*

03-29-2014, 10:34 PM	#3
fnkngrv Mr. 155 and climbing View User's Garage Drives: Seriously Modded 07 Sedan Join Date: Jun 2006 Location: In The Hotbox Posts: 4,742	Check Spark Plug Condition Looks like you could have a mixture of a couple conditions there. __________________ Team Tiamat Racing on Facebook Youtube Channel: Team Tiamat Racing *Class record holder in Land Speed @ 154.5mph for 1.5 mile and 145.5mph in the mile in the F (2.016 to 3.014 L), G (1.524 to 2.015 L), and H (1.016 to 1.523 L) classes.*

03-29-2014, 10:37 PM	#4
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	Those plugs don't look bad for 73K miles. __________________

03-29-2014, 10:40 PM	#5
Shroomster '07 to '12:2 wipers to 1? View User's Garage Drives: '12 5-door LE & '14 5-door LE Join Date: Apr 2007 Location: Orlando Posts: 1,999	I like how ash fouled and worn are the same image.... Sent from my C6902 using Xparent Skyblue Tapatalk 2 __________________ MicroImageonline forums - Shroomster Xda Forums - Shroomster Androidforums - Shroomster I'm noticing a pattern......

03-30-2014, 05:38 PM	#8
esse10 Drives: 2009 yaris 2 door Join Date: Feb 2013 Location: richmond TX. Posts: 232	seafoam looks like a candidate for a Seafoam cleaning at the Intake manifold. Did wonders for my 200k mile new beetle.

03-30-2014, 06:02 PM	#9
Exiwolfman View User's Garage Drives: 2007 Yaris Join Date: Feb 2013 Location: Wasaga beach Posts: 1,617	Seafoam ...does really work ? I did my plugs at aground 140km and they looked clean nothing like urs ....also did u clean ur throttle body mine was dirty would stick and caused bad ideal , easy to do just make sure u have key on and someone on the throttle pedal when cleaning or ur get we'll May engine light . Sent from my iPhone using Tapatalk

03-31-2014, 11:00 AM	#10
jack black Drives: 2007 red Yaris HB AT Join Date: Dec 2013 Location: southeast USA Posts: 197	Little wear but lots of carbon. Any oil consumption? Is this short trip driving? If so, this car needs some hwy driving or Italian tuneup.

03-31-2014, 11:06 AM	#11
fnkngrv Mr. 155 and climbing View User's Garage Drives: Seriously Modded 07 Sedan Join Date: Jun 2006 Location: In The Hotbox Posts: 4,742	Like Scott said with over 70k the results are not bad per se. Personally I would verify after 15-20k more miles how new ones look just for due diligence sake. From my m-o-b-i-l-e __________________ Team Tiamat Racing on Facebook Youtube Channel: Team Tiamat Racing *Class record holder in Land Speed @ 154.5mph for 1.5 mile and 145.5mph in the mile in the F (2.016 to 3.014 L), G (1.524 to 2.015 L), and H (1.016 to 1.523 L) classes.*

04-01-2014, 06:10 AM	#14
bronsin Drives: 2009 Base Hatch 2 Dr Auto Join Date: Dec 2008 Location: nj Posts: 4,790	They are OK. Just gap them and put them back in for another 200,000k miles. __________________ Synthetic Oil: Its All In Your Head

04-01-2014, 12:31 PM	#16
Hershey Drives: 08 Yaris sedan auto / Fit auto Join Date: Oct 2009 Location: northeast Posts: 2,897	Yes , these are the NGK IFR5A11 installed at the factory .

04-05-2014, 11:05 PM	#18
jack black Drives: 2007 red Yaris HB AT Join Date: Dec 2013 Location: southeast USA Posts: 197	Have you cleaned the TB and checked the engine mounts?

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