WATCH: How to Replace Spark Plugs on a Lexus CT200h

[@mohammedsuboh1420]

I like your way of explaining. Your work is excellent, Mr. B

[@AutoScholarwithMrB]

Thank you Mohammed!

[@maxbeckwith9]

Thank you for making this video !!

[@PanaMaJwaaRd]

Keep these comin! So much valueeeee

[@JeepGladiatorestAprilJTR]

Great video!!! Thanks. I now feel confident that I can do it myself and save a lot of money. Thanks again for another great video!

[@AutoScholarwithMrB]

Glad to help and thanks for watching.

[@pgreenx]

I read on a Lexus shop manual somewhere not to use anti seize. The plugs have a coating on them. Also the old 120k plus seem to come out easy without any factory anti seize. What do you think

[@AutoScholarwithMrB]

I’ve used anti seize for 25 years, and also in every Prius/CT I’ve ever done, never had an issue. As far as factory recommendation, I’ve never seen it mentioned pro or con.

[@pgreenx]

@@AutoScholarwithMrB this direct off NGK website. I assume it’s the same for all high quality plugs. Not saying your wrong. Just trying to do the right thing 5 THINGS YOU SHOULD KNOW ABOUT SPARK PLUGS 1. Anti-seize NGK spark plugs feature trivalent plating. This silver or chrome-colored finish on the threads is designed to provide corrosion resistance against moisture and chemicals. The coating also acts as a release agent during spark plug removal. NGK spark plugs are installed at the factory dry, without lubrication or anti-seize. Anti-seize can act as a lubricant, altering torque values up to 20 percent, increasing the risk of spark plug thread breakage and/or metal shell stretch. Thread breakage can sometimes involve removing the cylinder head for repair. Metal shell stretch changes the heat rating of the spark plug and can result in serious engine damage caused by pre-ignition. Do not use anti-seize or lubricant on NGK spark plugs. It is completely unnecessary and can be detrimental.

[@AutoScholarwithMrB]

You are correct! I have put an update in the description for NGK plugs. Thanks for pointing this out.

[@pgreenx]

​@@AutoScholarwithMrB I am weekend mechanic that breaks as many things as I fix but read well! Im still trying to figure out if/when to use anti seize or grease on brake job!

[@AutoScholarwithMrB]

@@pgreenx hey, I value your feedback! I’ve been doing this a long time and I learn new stuff daily, especially from my students at school. Sometimes we as pros are too traditional and stuck in our ways. Thanks for watching and adding to the conversation.

[@jorgeg2492]

Great video! I changed all of my spark plugs, however, one of the plugs had a little oil, and is still misfiring. Any suggestion?

[@AutoScholarwithMrB]

@@jorgeg2492 oil on the porcelain or on the threaded end? If on the porcelain then you need to replace your valve cover gasket and the four seals.

[@jorgeg2492]

@@AutoScholarwithMrB oil on the thread

[@jorgeg2492]

There was a little oil on the tip where it ignites near the thread on only one plug.

[@ChezzusChrist]

Where did you get the torque specs? 15 Ft lbs sounds pretty high for some spark plugs

[@jdmnhearts]

I got stuck at the spark plugs dont become loose and cant get them out what am i doing wrong???

[@mathewswortchek1929]

does this take a 3/8 or 1/2 in driver/torque wrench?

[@AutoScholarwithMrB]

3/8

[@leonardmorales746]

Should the coikcs be changed?

[@tannermullins9320]

Do you know why gas mileage would go down on one of these? I’m getting about 330 miles on a full tank. But a while ago it was over 400. Thanks.

[@jack11224]

Could be your air filter might be dirty. Clean it if you can or replace with genuine. Check your tyre pressure. I own a CT and I run 42psi front and 40 rear. Rides a little harsher but definitely notice better rolling resistance.

[@AmericanMayan]

@@jack11224 whew that's high. The door says 32/33

[@LeagueofLegendsPreRelease]

Check your EGR valve an EGR cooler it probably needs a cleaning there’s something about

[@ChezzusChrist]

I’m having the same issue, I did the math after completely filling the tank when it was on empty. And I found out I was getting about 350 miles on a full tank. After you replaced your spark plugs did your gas mileage increase?

[@AmericanMayan]

You're awesome Mr B Do you own a shop? Where are you located? To hell with the dealership 😭 for tune ups

[@AutoScholarwithMrB]

I’m an instructor at a technical college, thanks for the compliments and thanks for watching!

[@inSpyr]

is it safe to unplug each ignition coil one by one while the engine is running to see which one is bad?

[@AutoScholarwithMrB]

I would not try that. You can swap the coils and see with a scan tool of the misfire moves by either a code setting or the misfire counter showing a different cylinder. Hope this helps!

[@ramziel-hoss9366]

I thought cylinder number one is the first one on your right? The closest one to the driver? I believe in the video you installed the left one first and you mentioned that it was cylinder number one. Please clarify? Thank you.

[@AutoScholarwithMrB]

Cylinder 1 is the first cylinder on the passenger side, furthest away from the transmission. Hope this helps!

[@DrRichtofenXx]

What if my 14 mm deep socket is now stuck. I didn't realize the socket is wider at the end

[@DrRichtofenXx]

Got long needle nose pliers and twisted it left and right as well as pulling up. Purchased 14mm deep socket at harbor freight and did it easily.

[@ryturnitup433]

What size socket extension did you use from the 2nd plug onward? I only have a 6inch extension and want to confirm if that will work. Update: a 6 inch extension was the right size

[@shahn78]

- 10mm to remove coil pack - 9/16 or 14mm to remove/tighten spark plugs

[@Fyane004]

Gracias..!

[@AutoScholarwithMrB]

De nada!

[@MengryBaotou]

My MPG is 35, but my mileage is only 14000 (ct200h 2014). Oils are changed regularly. Do you know what might be the cause of my high MPG? Thanks. Since you said that spark plugs only need to be replaced every 120000 miles, I guess the cause of my high MPG lies elsewhere.

[@myqaveli]

It could be the hybrid battery filter try cleaning it

[@Maineriverandtide]

Driving style can vary this also cold weather climate drops mpg on the prius/ct200

[@jamarcusshelby9587]

Use a code reader, and check the egr Function, tire pressure, alignment issues. Your mpg should be 43-50 in city after oil changes. There's definitely something going on. You may need the upgraded egr, and head gasket.

[@elonbro4733]

Could u plz give me url for all parts u need?

[@AutoScholarwithMrB]

Links are in the video description for two types of spark plugs. Thanks for watching!

[@travislawless9370]

My 14 is to big for the socket

[@leonardmorales746]

I heard to not use lubricant

[@AutoScholarwithMrB]

I updated this recommendation in the description of the video. However, I have put a ton of miles on this since then with no problems.