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- Lexus IS GS: How to Replace Spark Plugs
Step by step instructions for do-it-yourself repairs
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Spark Plug Change for GS300
03-27-11, 03:50 PM
#93
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Join Date: Feb 2010
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TORQUE MASTER PLUGS, I just did a major tune up on my gs300 and take it from me there CRAP. My car is running really bad now,I got a cel code po300 now so imma go back with the ngk's I took out...
Last edited by byoung1; 03-27-11 at 03:56 PM.
06-06-11, 07:34 AM
#96
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I know everyone, including Lexus, says to run Iridium plugs, but it still says to use a double platinum plug under the hood. I use the Denso PK16TR11, they are cheaper, they run just as well as Iridiums, and I'll be darned if they don't last nearly as long. If it ain't broke, then why fix it. My money will go towards double platinum plugs until the car refuses to run with them, which I don't think will ever happen.
Last edited by RoboRam12; 06-06-11 at 07:37 AM.
06-20-11, 08:03 PM
#97
Instructor
I forgot which coil packs go in which location. Can someone give me some insight of where the coil pack and plugs go?
so far i have it has
from front to back
Plug Coil Pack Plug Coil Pack Plug Coil pack
so far i have it has
from front to back
Plug Coil Pack Plug Coil Pack Plug Coil pack
06-21-11, 09:31 PM
#98
Instructor
Figured it out from the picture a few posts back.
here are some pics.
After tearing down everything to get to the spark plugs I noticed oil that leaked from the valve cover gasket. So went ahead and changed the gasket as well. About 29.99 from Autozone.
The car is a 2000 GS 300 with 95k
I replace the plugs with NGK Irridium (they work great)
Problems I encountered
1. Clips on spark plug wire break very easily (as mentioned before, but can still be placed back on without the clip part that breaks)
2. Forgot where to number all plug wires before removing from plugs
3. Alot of dirt and pieces of the plug wire in the spark plug cylinders
4. In my case oil was leaking at the back of the valve cover gasket so I had to replace gaskets
5. Needed help on location of critical locations where the gasket sealant should go.
6. You don't have to remove the whole intake manifold just half of it and lift it high enough for the valve covers to clear. (4 bolts on top 2 nuts under neath. I had to use and open ended wrench for the nut closer to the firewall)
7. When reinstalling I forgot to place the bottom (coolant?) hose to the throttle body. Make sure to attach the rear bottom coolant hose before bolting up.
8 Rear bolt (on valve cover and plug wire) was not as easy to tighten but still very doable with angle socket
PM me if you need any help
Here are some random pictures I took along the way (not in order)
here are some pics.
After tearing down everything to get to the spark plugs I noticed oil that leaked from the valve cover gasket. So went ahead and changed the gasket as well. About 29.99 from Autozone.
The car is a 2000 GS 300 with 95k
I replace the plugs with NGK Irridium (they work great)
Problems I encountered
1. Clips on spark plug wire break very easily (as mentioned before, but can still be placed back on without the clip part that breaks)
2. Forgot where to number all plug wires before removing from plugs
3. Alot of dirt and pieces of the plug wire in the spark plug cylinders
4. In my case oil was leaking at the back of the valve cover gasket so I had to replace gaskets
5. Needed help on location of critical locations where the gasket sealant should go.
6. You don't have to remove the whole intake manifold just half of it and lift it high enough for the valve covers to clear. (4 bolts on top 2 nuts under neath. I had to use and open ended wrench for the nut closer to the firewall)
7. When reinstalling I forgot to place the bottom (coolant?) hose to the throttle body. Make sure to attach the rear bottom coolant hose before bolting up.
8 Rear bolt (on valve cover and plug wire) was not as easy to tighten but still very doable with angle socket
PM me if you need any help
Here are some random pictures I took along the way (not in order)
09-12-11, 11:06 AM
#99
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im about to change my plugs tomorow. just wondering since we are moving the intake manifold out of the way, do we change out the intake manifold gasket as well? i was told by a mechanic it would need to be done as well
11-09-11, 07:46 AM
#101
Driver School Candidate
it took about 2 hours to do
i was getting pissed off with ever thing that i need to take off and then the coil pack did not want to come off.
then i missed the firing order.
found some oil in the bay but i was not worried about it so much.
when doing this, i would recommend take your time. get the spark plugs and wires....
i was getting pissed off with ever thing that i need to take off and then the coil pack did not want to come off.
then i missed the firing order.
found some oil in the bay but i was not worried about it so much.
when doing this, i would recommend take your time. get the spark plugs and wires....
11-18-11, 04:58 PM
#102
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hey i did a major tune up on my 01 gs3 and used ngk wires with torque master plugs everything worked out good still running the plugs but thinking bout changing them out for E3 plugs my buddy used those in his is3 and you really can tell a difference....
11-30-11, 12:00 PM
#103
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I've stuck with the OEMs or Iridiums without any issues. It's just kind of funny when you have guys looking for insane horsepower increases from a spark plug!
03-06-12, 10:25 AM
#105
Save your money for other mods or fuel.