TLW

hello all

just changed the sparkplugs on a GS400

this is how to do it

tool you will need

10mm deep 1/4 inch socket and ratchetr

one deep Sparkplug socket 5/8

some extensions

one stubby ratchet and a normal ratchet

very easy

ready on the coil pack there is a 10mm bolt ..loosne that and remove coil pack

the coil pack might be a little stubborn but it will free it self ....twist side to side

now take the deep 5/8 sparkplug socket slide into the hole and take out the sparkplug

see how easy that was

put the sparkplug carefully in the deep socket and once carefully insert into the hole
you dont want to mess up the gap

snug it up ,put the coil pack on and put the 10mm bolt back in snug it up

and thats it

i did all eight in less than hour ....the passenger side is easier

good luck

johnny

here some pics
10mm socket and 1/4 inch wrench

deep spark plug socket 5/8

10 mm bolt and the coil pack

coil pack removed

spark plug out

noop

Cool write up , whats a good kind of spark plug to use?

LB Lex

Nice write-up I also heard that anti-seize compound should be used on the spark plug threads so they do not seize to the aluminum heads.

TLW

you know i heard this too ...but i didnt do it this time
the sparkplugs i used are
NGK BKR7-EIX

now these are for the FI GS's

but tthe website is

www.sparkplugs.com

just plug in your car

I almost forgot to thank DaveGS4 ..this place is great the prices are awesome and the overnight is very helpful when you neeed it

Thanks again Dave

DaveGS4

iTrader: (2)

Not a problem, that's why we're all here . Thanks for the writeup!

If I were not FI, I'd buy Torquemaster plugs to put back into my GS4... I still might do it with FI if I can get the colder plugs. Steve G has just opened up a group buy on them.

https://www.clublexus.com/forums/sho...d.php?t=167426

TLW

i was wondering if that was even an option ...hmmmm

ill keep these for a while ...let meknow if you change and notice a difference

LB Lex

Did you get the right plugs or is the part number you provided a typo. It says the plugs you got (NGK BKR7-EIX) are for a Volvo http://www.sparkplugs.com/results_fi...pid=BKR7%2DEIX

The NGK plug for the GS4 is BKR6EIX-11 http://www.sparkplugs.com/results_ap...1&AAIA=1356072

TLW

https://www.clublexus.com/forums/sho...d.php?t=151204

read this my good man

LB Lex

I see, I forgot that you are FI.

chuckb

how did the old ones look?

TLW

compared to the new ones ..dirty

LEXUS_KID

iTrader: (4)

Way to go Johnny What a way for everyone to save a few bucks the dealer charges $299 labor plus around $100 for the plugs nice write up

EFMJR

iTrader: (4)

OK, this is probably a stupid question, but what is ment by FI GS? Ive been stumbling across this a few times and am puzzled. Please help the clueless person here. Thanks

chuckb

forced induction

EFMJR

iTrader: (4)

Ohhh, I kinda thought that, but wanted to make sure it wasnt some rare type or something. Thanks