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Old 07-31-2006, 03:10 AM   #1
ski4ever
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Dizzy 2000 LS1 4 cyl. Where do spark plugs go?

At approx. 76,000 mi. I've noticed my milage has dropped about 2 mpg. Decided to do my first tune-up & change the spark plugs. I couldn't immediately find where they are! My car manual doesn't give a clue as to where to find the spark plugs and wires. I assume they are hidden under a metal shroud, but am not sure. A recent stomach bypass operation makes it difficult for me to get under the engine. I don't want to buy a shop manual right now. Can anyone help? Could use a schematic of engine if available.

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Old 07-31-2006, 04:17 AM   #2
Sir Trews
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Default Re: 2000 LS1 4 cyl. Where do spark plugs go?

Here's one to check around in.... http://www.faqfarm.com/wiki.phtml

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Old 07-31-2006, 08:10 AM   #3
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Default Re: 2000 LS1 4 cyl. Where do spark plugs go?

they are under the coil packs, the black panel on top of the cam cover. DOHC engines always have the plug centered right over the piston. sorry I didn't go looking for a picture.

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Old 07-31-2006, 10:44 AM   #4
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Default Re: 2000 LS1 4 cyl. Where do spark plugs go?

Check out a thread in the L-series tech section. The plugs are under the coil pack, with four bolts 15mm I believe. Pop of the coil packs and remove the old plugs with extension and spark plug socket. Make sure the engine is cool to the touch. Do not use anti-seize on the new plugs and torque plugs to 20ft lb. Wally world sells the Auto-lite platinum plugs that are gapped to the correct spec. Holler if you need more help.

Brian

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Old 08-21-2006, 10:16 PM   #5
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Default Re: 2000 LS1 4 cyl. Where do spark plugs go?

Quote:
Originally Posted by frostypanic
Check out a thread in the L-series tech section. The plugs are under the coil pack, with four bolts 15mm I believe. Pop of the coil packs and remove the old plugs with extension and spark plug socket. Make sure the engine is cool to the touch. Do not use anti-seize on the new plugs and torque plugs to 20ft lb. Wally world sells the Auto-lite platinum plugs that are gapped to the correct spec. Holler if you need more help.

Brian
Brian,
Why should I put in the plugs without anti-seize?
thnx
Endre

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Old 08-21-2006, 10:53 PM   #6
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Default Re: 2000 LS1 4 cyl. Where do spark plugs go?

vibration makes them come loose.

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Old 08-21-2006, 11:52 PM   #7
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Default Re: 2000 LS1 4 cyl. Where do spark plugs go?

The Haynes Manual for the L Series has a section on spark plug maintenance and specifically states that plugs need a light coating of anti-seize compound before being put into the head.
You put a plug into an aluminum head without anti-seize coating and you will have a lot of difficulty in getting it back out a couple of years later without stripping the threads in the block and all the expense that it entails.
For what it is worth,I asked my local Saturn dealer about this today and was told that " anyone that puts new plugs into a 2.2 engine aluminum block without applying anti-seize coating,if they do not already have it on them,is asking for trouble."
Properly torqued down plugs will not come loose.

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Old 08-22-2006, 11:14 PM   #8
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Default Re: 2000 LS1 4 cyl. Where do spark plugs go?

Both techs on this board state that anit-seize should not be used.

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Old 08-23-2006, 12:00 AM   #9
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Default Re: 2000 LS1 4 cyl. Where do spark plugs go?

I don't know what Techs you are referring to,but I find it strange that they would say such a thing. Possibly they are thinking of the OEM plugs for the L81 engine (V6) which come with anti-seize coating already applied. This apparently is not the case with the plugs for the 2.2. All I can say is that my dealer always puts anti-seize on any plug for any of the Saturns and Saabs that are serviced in their shop. The Haynes Manual supports this as well.

You can always take a chance that after 100K miles you can get the plugs out without damage. It just seems smarter to spend a few seconds and a few cents worth of anti-seize coating for peace of mind down the pike.

Maybe Wolfman and/or SSICarman would comment on this.

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Old 08-23-2006, 11:12 AM   #10
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Default Re: 2000 LS1 4 cyl. Where do spark plugs go?

Here's the complete thread with the service bulletin from GM advising antiseize NOT be used on 2.2L Ecotec engines. I assume this also applies to the 2.4L Ecotec based engine.
http://www.saturnfans.com/forums/sho...ight=antiseize

Two techs suggested a couple of drops of engine oil on the 2.2L plug threads rather than antiseize.

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Old 08-23-2006, 03:31 PM   #11
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Default Re: 2000 LS1 4 cyl. Where do spark plugs go?

Wow....talk about surprises !

I guess I'll have to take a copy of that TSB in to my service dept as they did not seem to know that Saturn had officially decreed not to use anti-seize on 2.2 L plugs.

I'm sure there are a lot of people like me that are "belt and braces" types from way back that will still use a light coating and a torque wrench when replacing plugs.

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Old 08-24-2006, 02:21 PM   #12
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Default Re: 2000 LS1 4 cyl. Where do spark plugs go?

If the concern is that overtorquing will occur because of using antisieze, I would just use a light coating of antiseize, screw the plugs in fingert tight, and add 1/4 additional turn of the ratchet. I can't see how this would be a problem.

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