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Old 01-24-2016, 06:18 PM   #1
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Compression tested

So as many of y'all know my timing chain was rattling and making noises. Got it fixed and at the last moment heard a very loud pop noise. Figured hey new engine time. No, not yet. Spark plug from cylinder 3 i believe blew out causing popping noise. But no check engine light other then MAF sensor. Did a compression checked and cylinder 3 was at 60. Tested again and bump to 125 then again at 80. All other cylinder range from 180 to 200. So is my rings bad or valves? Or could it be a head gasket issue? I have been white smoking a lot since I had the car but no coolant loss? Cylinder 4 spark plug was moist but didn't smell like coolant.

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Old 01-24-2016, 06:19 PM   #2
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The spark plug that blew out.

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Old 01-24-2016, 06:21 PM   #3
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The only 2 spark plugs that were bad. The broken one is obviously the one that blew out and the dark one is from the cylinder with low compression. I have no idea if my car is tune or not. Been running 87 octane. Any detonation issue?

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Old 01-24-2016, 06:21 PM   #4
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Also this plug. Where does it go? It's been unplugged since I ve had the car

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Old 01-24-2016, 06:23 PM   #5
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Different view from the low compression plug.

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Old 01-24-2016, 06:24 PM   #6
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Just a reminder. Car is 04 GT 5 speed with 103k miles. Before I had the chain and tensions replaced it ran like a beast. Pulled hard and ran great. Only mods are cams slp long tubes and catless x pipe wield in 40s. And msd coils. Which are horrible by the way.

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Old 01-24-2016, 08:13 PM   #7
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First thing that concerns me is where did the rest of that spark plug go with that missing electrode? Also, if that's the one with low compression, the looks of it says a lot. Nothing good I'm afraid.
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Old 01-24-2016, 10:52 PM   #8
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Quote:
Originally Posted by oxfordwhite View Post
First thing that concerns me is where did the rest of that spark plug go with that missing electrode? Also, if that's the one with low compression, the looks of it says a lot. Nothing good I'm afraid.
It all came off with the MSD Coil pack. As soon as I pulled the Spark Plug and the Coil apart it shattered.
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