Introduction
This guide will show you how to replace the spark plugs in your VE / VF V6 Commodore. Whilst this guide is written for the LLT Engine, the process is very similar for LFX Models, however the intake manifold is plastic.
Difficulty Rating
Hard
Tools/Parts Required
- Spark Plug Socket
- Socket Set
- Torque Bar
- Breaker Bar
- Anti-Sieze
- x6 Spark Plugs (1.1mm Gap)
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This Post Has 18 Comments
Craig Haydon
17 Sep 2017Hi did you re-use the original gasket from under the intake plenum when putting the plenum back on? Or did you have to buy a new gasket kit?
Staff @ AutoInstruct
17 Sep 2017Re-used the gasket as it is a solid piece. Older models with paper gaskets should be replaced.
Craig Haydon
18 Sep 2017Thanks for the reply, much appreciated. I am looking at doing spark plugs and manifold clean out at 100,000km. (93,500 now).
Angel Towell
7 Nov 2017This is excellent advice! I appreciate your work. Really it such an informative post. I’ve read so many amazing things about your article! Looking forward to reading more of your blogs…
Thanks for sharing.
nordickiwi
29 Jul 2018Thanks for the howto instruction, I was able to use it to get my plugs changed. Though I was unable to find the last bolt to release the manifold in step 5. Even with the manifold still in place I was able to get the coils off by loosening the purge solenoid bracket that was on the side of the manifold and swinging it forward. So Basically I could have done the job without removing any manifold bolts, throttle body bolt or removing the intake pipe. So only the pvc tubes would have needed disconnecting. Hope this helps someone else. Cheers. Thanks again.
madram
2 Jan 2019To change spark plugs in VE Commodore(lfx) there is no need to remove manifold; I did it last week and I am 75 years young.
RodB
22 Mar 2020You don’t need to do any of this on the LLT engine either. Remove a couple of hoses, and the solonoid (to get to number 5) but you definitely do NOT need to loosen or remove the intake. I replaced coils and plugs today on an ’09 LLT engine and didn’t touch any of the manifold bolts. Once you pull the coil from the port, you just need to rotate it 90 degrees so the mounting tab will clear the intake. You’ll need an articulated plug spanner or socket to get the plugs out of 5 and 6 (unless you want to remove the plastic trim below the windscreen). This is a 1-hour job at the most and is of medium complexity at best.