How do these spark plugs look from my cammed LS?
#1
How do these spark plugs look from my cammed LS?
I noticed the one in the middle is slightly different color than the others. This is from the passenger side. Every plug not pictured looks the same as the 2 outside ones. Do they look ok??
#3
#4
ModSquad
iTrader: (6)
No. Ideally plugs should be a medium/light tan to a light grey, on the ground strap, and free of peppering. The insulator around the center electrode should be clean and white…ish.
What cylinder head?
How much total timing?
What compression?
Are you running an additive? Additives will cause that orange color I see.
Do you have access to HP tuners, if this is a fuel injected engine?
Lots of variables to digest, but answers will help figure this out.
What cylinder head?
How much total timing?
What compression?
Are you running an additive? Additives will cause that orange color I see.
Do you have access to HP tuners, if this is a fuel injected engine?
Lots of variables to digest, but answers will help figure this out.
The following 2 users liked this post by Che70velle:
G Atsma (06-29-2024), Old Buzzard (06-29-2024)
#5
No. Ideally plugs should be a medium/light tan to a light grey, on the ground strap, and free of peppering. The insulator around the center electrode should be clean and white…ish.
What cylinder head?
How much total timing?
What compression?
Are you running an additive? Additives will cause that orange color I see.
Do you have access to HP tuners, if this is a fuel injected engine?
Lots of variables to digest, but answers will help figure this out.
What cylinder head?
How much total timing?
What compression?
Are you running an additive? Additives will cause that orange color I see.
Do you have access to HP tuners, if this is a fuel injected engine?
Lots of variables to digest, but answers will help figure this out.
Last edited by Jmichael; 06-29-2024 at 06:27 PM.
#7
8 Second Club
iTrader: (4)
You can't read old crusty plugs. How many miles do those things have on them?
The only way to read a plug is to put a new set in with as little idle cruise time on them as possible. (talking like minutes here) Make a pass. Then shut the car off immediately, and pull them. Once you find your "hot" cyl. Just cycle new plugs in and out of that one cyl.
The only way to read a plug is to put a new set in with as little idle cruise time on them as possible. (talking like minutes here) Make a pass. Then shut the car off immediately, and pull them. Once you find your "hot" cyl. Just cycle new plugs in and out of that one cyl.
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#8
You can't read old crusty plugs. How many miles do those things have on them?
The only way to read a plug is to put a new set in with as little idle cruise time on them as possible. (talking like minutes here) Make a pass. Then shut the car off immediately, and pull them. Once you find your "hot" cyl. Just cycle new plugs in and out of that one cyl.
The only way to read a plug is to put a new set in with as little idle cruise time on them as possible. (talking like minutes here) Make a pass. Then shut the car off immediately, and pull them. Once you find your "hot" cyl. Just cycle new plugs in and out of that one cyl.
#11
TECH Enthusiast
iTrader: (13)
i did the same thing as you today. pulled my plugs and they look like yours. but mine have a lot more miles on them. Trex cammed LS1 with 243 heads. TR6 plugs. im gonna replace mine and then do some reading. my ground straps are kinda white but the other parts are black like yours.
#12
i did the same thing as you today. pulled my plugs and they look like yours. but mine have a lot more miles on them. Trex cammed LS1 with 243 heads. TR6 plugs. im gonna replace mine and then do some reading. my ground straps are kinda white but the other parts are black like yours.
#13
12 Second Club
iTrader: (13)
Just going to throw this out there - Reading plugs on an engine running pump gas isn't an exact science. Too many variables and additives in the fuel. Forcefed86 definitely gave the correct method for doing it, but unless you're running race fuel, it's not going to be as obvious.
The following users liked this post:
DualQuadDave (07-04-2024)
#14
#15
TECH Senior Member
The following users liked this post:
Old Buzzard (07-06-2024)