Spark plug replacement
Thread Starter
Instructor
Joined: Mar 2014
Posts: 180
Likes: 5
From: Tallahassee area Fl
Spark plug replacement
I've got a slight shimmy at idle on my 2010 base I just bought, I'm looking into changing the plugs and doing a bit of a tune up so I have a starting point/baseline to go from.
What plugs are you guys using?
I'm not tracking the car but I do like to drive a bit aggressive sometimes....like most of us in here.
Thanks in advance.
What plugs are you guys using?
I'm not tracking the car but I do like to drive a bit aggressive sometimes....like most of us in here.
Thanks in advance.
Melting Slicks
Joined: Jan 2017
Posts: 2,704
Likes: 891
From: CONCORD CA.
i just changed the plugs & wires last week ( after 137k miles ).no reason other then I felt that it was way overdue.
went with the AC Delco plugs ( #41-110 ) & duralast gold wires. the car is still stock, so I stayed with "stock' replacements.
one of the plugs was totally missing its electrode. I'm sure it was firing, otherwise I'm also sure I would have gotten a CEL.
went with the AC Delco plugs ( #41-110 ) & duralast gold wires. the car is still stock, so I stayed with "stock' replacements.
one of the plugs was totally missing its electrode. I'm sure it was firing, otherwise I'm also sure I would have gotten a CEL.
Le Mans Master
Joined: Feb 2008
Posts: 5,634
Likes: 1,185
From: Lake Worth Beach, Florida
I replaced my plugs and wires with OEM parts at 96K. Just because it was called for by GM at 100K. If you are not close to the 100K mark I don't think you need them. One thing you can check is that all the wires are tightly attached to the coil packs and spark plugs. It is not uncommon for the wires to slip off the coil packs. I had one recently come off and for a couple of days it was close enough to allow the spark to continue but I could hear it arching.
Once a year I clean the MAP and throttle body.
Once a year I clean the MAP and throttle body.
Last edited by Rocketmanwpb; Sep 27, 2018 at 04:19 PM.
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Drifting
Joined: Jul 2009
Posts: 1,435
Likes: 19
From: Sioux Falls South Dakota
Curious... have you checked your HB? I'd have to go through all the old strings on it, but I thought a slight shimy / shake was one of the signs / signatures of when the HB starts to wobble.
Melting Slicks
Joined: Sep 2017
Posts: 2,396
Likes: 525
From: Lower New York
The LS-3 is known to have a lumpy idle as many members here have mentioned. I bought my 2012 new (sold) as I did my current 2013 GS and both cars had, have a lumpy idle.
Le Mans Master
Joined: May 2015
Posts: 5,187
Likes: 1,216
From: Las Vegas Nevada
I was curious about the use of the word "shimmy" also. Sounded like he was maybe referring to a miss, or loping idle. Shimmy is something I have only ever felt in the steering.
Thread Starter
Instructor
Joined: Mar 2014
Posts: 180
Likes: 5
From: Tallahassee area Fl
Been a busy day...
So I just turned 66,000 miles and my best comparison is against my old '05 that was smooth as silk.
I took a long look at the HB this evening and I don't think that's a problem.
It very well could be that the LS3 just has a bit more lump in it's idle than the LS2 did and it still feels different to me.
I listened at the tail end and it does sound like there's a little skip in there somewhere...but that can show up in just about anything mechanical.
I'll check the wires and the connections, and clean the MAF & throttle body before I start throwing new parts at it.
Thanks for all your input.
Trey
So I just turned 66,000 miles and my best comparison is against my old '05 that was smooth as silk.
I took a long look at the HB this evening and I don't think that's a problem.
It very well could be that the LS3 just has a bit more lump in it's idle than the LS2 did and it still feels different to me.
I listened at the tail end and it does sound like there's a little skip in there somewhere...but that can show up in just about anything mechanical.
I'll check the wires and the connections, and clean the MAF & throttle body before I start throwing new parts at it.
Thanks for all your input.
Trey
Le Mans Master
Joined: Jan 2008
Posts: 6,457
Likes: 297
From: corpus christi Texas
Been a busy day...
So I just turned 66,000 miles and my best comparison is against my old '05 that was smooth as silk.
I took a long look at the HB this evening and I don't think that's a problem.
It very well could be that the LS3 just has a bit more lump in it's idle than the LS2 did and it still feels different to me.
I listened at the tail end and it does sound like there's a little skip in there somewhere...but that can show up in just about anything mechanical.
I'll check the wires and the connections, and clean the MAF & throttle body before I start throwing new parts at it.
Thanks for all your input.
Trey
So I just turned 66,000 miles and my best comparison is against my old '05 that was smooth as silk.
I took a long look at the HB this evening and I don't think that's a problem.
It very well could be that the LS3 just has a bit more lump in it's idle than the LS2 did and it still feels different to me.
I listened at the tail end and it does sound like there's a little skip in there somewhere...but that can show up in just about anything mechanical.
I'll check the wires and the connections, and clean the MAF & throttle body before I start throwing new parts at it.
Thanks for all your input.
Trey
Pro
Joined: Jun 2017
Posts: 566
Likes: 277
From: Amarillo TX
I replaced the plugs and wires on my ‘05 C6 at 68,000 miles, partially out of curiosity to see there condition and partially because I needed a project one Saturday morning. I used OEM ACDelco plugs and Hinson wires (I’m a fan of Hinson and got them for about the same price as OEM). Replacing plugs and wires on a C6 is one of the easiest projects you can do has mentiobed, a dab of anti seize or motor oil on the plug threads and some dielectric grease on the inside of the boots. Make sure you feel them click onto the plug and coil or you will have a misfire.
Thread Starter
Instructor
Joined: Mar 2014
Posts: 180
Likes: 5
From: Tallahassee area Fl
I decided to go ahead and change plugs & wires yesterday for peace of mind and to establish a baseline for my ownership.
One of the plugs was loose and the plug wire on the one placed by a genius under the dip stick pulled right out of the boot when I was trying to pop it loose from the plug itself.
Idle is smoother and it definitely runs stronger now.
One of the plugs was loose and the plug wire on the one placed by a genius under the dip stick pulled right out of the boot when I was trying to pop it loose from the plug itself.
Idle is smoother and it definitely runs stronger now.
Thread Starter
Instructor
Joined: Mar 2014
Posts: 180
Likes: 5
From: Tallahassee area Fl