roshko

Advice from someone who just completed this DIY. (Heads up I didn't read every reply in this forum so some of this might have been addressed already.) I was only able to get one coil off without removing that rubber/plastic seal. My car is AWD, though that shouldn't make a difference in room between the engine and fenders. You do not need to remove the battery tray at the bottom, just the battery. A battery must of leaked once and the bolts on the tray were melted almost. Because my car was AWD the coil under the dip stick was kind hard to undo the bolt because the placement of the dipstick tube.

jud149

I just started my plug job on my '11 LS today and just removed all the crap. I'll start the plugs tomorrow. Here's a video which might be some help.

FreddyG

Sorry to raise up an old thread but I had to Thank the Helpful Folks that contributed to this thread (Especially Road Frog for starting this and Many other Helpful threads)!

I bought the factory plugs from our local Lexus dealership (wanted to avoid fakes and they actually had the best price around after discounting not having to pay for shipping) and did this job in around 2-2.5 hours without taking the battery out. I changed the rubber seals/gaskets/whatever that wrap around the coil too. The old ones were a little brittle and I also figured that I'd probably drop one or two while taking them out (which surprisingly didn't happen) but since I was in there already, it was money well spent.

Thanks again to all the contributors that posted up here. This forum ROCKS!!

ijones027

I have tried for 2 days getting the plugs out anyone the exact measurements of extensions needed?

Cape600L

Not to be smart a$$, but this is a very basic job. If you are "2 Days" in and still can't get them, I would highly recommend taking to a shop. Otherwise, just go out and buy some misc extensions and swivels and try again. This took me maybe 2 hours and that was replacing the coil gaskets etc. Very simple job that some seem to want to make a major ordeal.

FreddyG

I agree that it wasn't that hard but it depends on your mechanical ability and comfort level to work on cars. I like working on our cars, so it went smoothly. The comfort level varies though. I thought that the rear plug on the passenger side was the toughest but I agree that it wasn't that bad. It took about the same (2-2.5 hours) and I also changed the plug hole gaskets too just because the rubber gets hard and wants to crack/split.

It's nice that the plugs come already gapped but I ran a feeler gauge through them anyway and surprisingly enough, they were all spot on the money.

Zetascry

Can we run ruthenium NGK spark plugs with .044 gap?