Slowmaro305

I dont have a specific problem but bought a high mileage ls1 and wanted to perform a compression test just to see if there was any compression lost in the cylinders. I searched for a link but really couldnt find a step by step procedure for these cars. anyone know where i can find one. It seems the rear spark plug holes are gonna be a pain in the *** to get too.

99LSS1

iTrader: (12)

Yes they are!!!!! There is no real good way, Just be patient and have a bunch of bandaids handy for your cut up hands.

Slowmaro305

Whats the correct way to perform the test on these cars.

1. Warm up engine to operating temp
2. Remove all spark plugs

(This is where i am confused)3. What needs to be disconnected as far as coils or fuel injectors so no fuel or spark happens in the cylinder?

4. Hold throttle open, and crank engine, record readings move on.

Am i missing anything

LS6427

iTrader: (2)

#3......pull the fuel pump fuse

Slowmaro305

Thanks for the response, i guess thats easy enough. LOL, i am still thinking of old motors where you had to disconnect the coil wire on the distributor