I found Corbin's write up on here but had a quick question.

Once you've got the compression tester in one of the cylinders and you go to start the car, do you keep the accelerator pushed in all the way? And you keep cranking until the gauge stops going any higher correct? Thanks guys.

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HAD: '98 Eclipse RS

HAVE: '04 Grand Prix GTP Comp G

Yep. And don't forget to pull the engine fuse so the fuel will be shut off.

You are not your job.
You're not how much money you have in the bank.
You're not the car you drive.
You're not the contents of your wallet.
You're not your fu**ing post count.

97 Eclipse GS - *SOLD*
01 Audi A6 2.7T
01 YZF-R6

There should be 3 relays to the right of the brake fluid resovoir on the firewall, disconnect those to stop fuel n spark. Make sure the comp. tester is correctly sealed into the plug well. Keep cranked over, and step WOT then let off, do that about 3 times until you reach maximum psi for each cylinder.

*winter rebuild in process*
GST Muffler
injen short ram intake
magnecore 8.5mm wires
EGR removal/blockoff
front/rear strut tower bars
GSX dual piston calipers

Thanks guys.

____________________________
HAD: '98 Eclipse RS

HAVE: '04 Grand Prix GTP Comp G

I just unplug the injector and coilpack harnesses.

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four nails four corners four riders and four horses

Yeah, I just unplug the 2 relays also. Place the tester so you can see teh dial face from inside the car(so you can see it between the open hood and the windshield cowl), and keep cranking the engine UNTIL you don't see the needle move up anymore. Just don't crank the motor a few times, just keep cranking unitl the needle stops moving. Do this with the motor fully warmed up!

13.5 @108 MPH-2.2 60ft(stupid FWD!)
S16G @ 18 PSI/FMIC/Running on MegaSquirt II (Now with sequential
fuel injection)
My webpage: http://eclipsed4evr.home.comcast.net
-1998 Mitsubishi Eclipse RS-T- "Toy"
-1992 Plymouth Laser Turbo AWD(SOLD)
-2000 Honda CR-V(daily)

As pathetic as it sounds, I'm very nervous to see my results. Before I had a compression tester I was getting my 60k checkup done at Mitsu and told them to do a comp test for me. They said every cylinder was within 10% of each other but when I asked for hard numbers they said they didn't keep the numbers. Bastards.

____________________________
HAD: '98 Eclipse RS

HAVE: '04 Grand Prix GTP Comp G