Debris in the Cylinder - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 3 (permalink) Old 12-26-2015, 05:54 PM Thread Starter
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Debris in the Cylinder

Today I as I was checking my plugs, I remove coil on cyl 3 and the spark plug came out with it. The threads in the head were ruined and i found bits of aluminum inside the cylinder. I am not sure how to get the debris out of the cylinder. I tried using a shop vac, but it didn't work. Please help.
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post #2 of 3 (permalink) Old 12-27-2015, 01:14 AM
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Originally Posted by DarkGothic View Post
Today I as I was checking my plugs, I remove coil on cyl 3 and the spark plug came out with it. The threads in the head were ruined and i found bits of aluminum inside the cylinder. I am not sure how to get the debris out of the cylinder. I tried using a shop vac, but it didn't work. Please help.
I've read that you can fill the cylinder with oil or water, then disconnect the fuel injection/pump fuses and also the ignition coil fuses. Then turn it over with the starter (with the spark plug still out). It will spray the contents of the cylinder everywhere and youll have to do it a few times.

You should do some more googling first, but it's the only thing I know of.
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post #3 of 3 (permalink) Old 12-28-2015, 03:04 PM Thread Starter
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Thank you. I managed to crank it over with the injectors and coils unplugged and a friend held a shop vac over the empty spark plug hole. That got most of it out.

2006 Cobalt SS Supercharged Stage 3 aka "Balto"
2.9" GMPP Pulley
60# injectors
Snow Performance water-meth kit
ZZP front-mount intercooler
Pacesetter mid-length header
Lou's Custom Exhaust axle-back system
cat delete
Fujita CAI
B&M sts
Eibach Sportline springs
Dyno tuned by SMG Motoring
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