Should Spark Plug be replaced at 106,000mile on 2001 RX300
#1
Driver School Candidate
Thread Starter
Join Date: May 2011
Location: CT
Posts: 12
Likes: 0
Received 0 Likes
on
0 Posts
Should Spark Plug be replaced at 106,000mile on 2001 RX300
It will cost around $400+ to replace those 6 plugs. So far, the car run smoothly no hick-up or mis-fire. Car start right up with in one crank of key turning. no bang noise like lawn mover. These plug set is an original that come with the car. But my mechanic recommend me to change it as a 100,000 mile maintenance. How do I know it time to replace those plug? Thank
#2
Moderator
Recommended interval is 110k.
You can wait till you have a fail and then only replace the one that fails or replace them as part of recommended maintenance.
Check the DIY and shop around for better price but make sure you install recommended plugs Denso or NGKs. Dont bother with anything else, unless you have done your research.
Salim
You can wait till you have a fail and then only replace the one that fails or replace them as part of recommended maintenance.
Check the DIY and shop around for better price but make sure you install recommended plugs Denso or NGKs. Dont bother with anything else, unless you have done your research.
Salim
#3
I waited until one of my coil packs in the back went bad, and then had the plugs changed at the same time. This was at around 130,000 miles, and the spark plugs looks fine.
#5
Right. Denso presented a paper to the SAE showing the results of their successful effort to develop an iridium plug which would go 200k miles without any drop-off in performance in a passenger car. These are the fine tip plugs which are factory equipment in the RX's. They also make a larger tip plug which does not last nearly as long. However, not a good idea to leave plugs in that long because the threads could seize and do major damage when removing them. I like to pull them at 120k or so, inspect and re-install after applying anti-seize. I just pulled a set of NGK fine tipped iridium's from my niece's Acura TSX with 120k miles. I looked at the tips under magnification and they looked perfect...hard to distinguish new from used. Gap was perfect. For the vast majority of car owners, these plugs are good for the life of the car.
Last edited by artbuc; 01-31-15 at 01:12 AM.
#6
Per advice of a an NGK engineer i correspond with on another forum, DO NOT use anti-seize on NGK plugs. They use chromium plating to prevent plugs from freezing into the head.
Denso is suspected to use the same chromium plating.
Anti-seize will also change the tightening torque..without enough care you can over-torque and strip the threads.
#7
Moderator
Good luck getting a torque wrench on some of the spark plugs.
Salim
Salim
Trending Topics
#8
fwiw,
Per advice of a an NGK engineer i correspond with on another forum, DO NOT use anti-seize on NGK plugs. They use chromium plating to prevent plugs from freezing into the head.
Denso is suspected to use the same chromium plating.
Anti-seize will also change the tightening torque..without enough care you can over-torque and strip the threads.
Per advice of a an NGK engineer i correspond with on another forum, DO NOT use anti-seize on NGK plugs. They use chromium plating to prevent plugs from freezing into the head.
Denso is suspected to use the same chromium plating.
Anti-seize will also change the tightening torque..without enough care you can over-torque and strip the threads.
#9
#10
#11
They were the laser iridiums #6994. The instructions also showed different torque angles for plugs with tapers vs plugs with gaskets.
Last edited by salimshah; 01-31-15 at 12:08 PM. Reason: Moderation
#12
Just saying you probably "think" you saw instructions for anti-seize usage.
They are no where to be found on my new boxes of iridiums.
READ #1 on the attached NGK pdf link
NGK wouldn't spend the extra time, money and process to chromium plate the plugs..then tell customers to use anti-seize when it alters factory recommended torque specs.
source: http://www.ngksparkplugs.com/pdf/dyk_5points.pdf
Please Dont push the other person buttons. Salim
Last edited by salimshah; 01-31-15 at 12:06 PM. Reason: Moderation
#13
Just saying you probably "think" you saw instructions for anti-seize usage. http://www.ngksparkplugs.com/pdf/dyk_5points.pdf
Guys: Please remain civil in public forum. I dont want to sit an wordsmith each note.
Last edited by salimshah; 01-31-15 at 12:03 PM. Reason: Moderation
#14
Pit Crew
iTrader: (1)
If you bought them legit or stole them is your business.
Just saying you probably "think" you saw instructions for anti-seize usage.
They are no where to be found on my new boxes of iridiums.
READ #1 on the attached NGK pdf link
NGK wouldn't spend the extra time, money and process to chromium plate the plugs..then tell customers to use anti-seize when it alters factory recommended torque specs.
source: http://www.ngksparkplugs.com/pdf/dyk_5points.pdf
Please Dont push the other person buttons. Salim
Just saying you probably "think" you saw instructions for anti-seize usage.
They are no where to be found on my new boxes of iridiums.
READ #1 on the attached NGK pdf link
NGK wouldn't spend the extra time, money and process to chromium plate the plugs..then tell customers to use anti-seize when it alters factory recommended torque specs.
source: http://www.ngksparkplugs.com/pdf/dyk_5points.pdf
Please Dont push the other person buttons. Salim
#15
The NGK 3764 would also be a good candidate for 100k intervals with a slightly smaller iridium center electrode and standard nickel ground electrode. (saves you $3 per set of 6 if you're cheap )