I changed my plugs today..and decided to do a compression test.. i want you guys to help me understand if the below figures are ok.. and what numbers would i see if they were bad... i am hoping these numbers reflect good.. my cars is a 92 si.. and i jsut had the head redone due to some type of aluminum shrapenel getting in one of the chambers...

1: 155
2: 160
3: 150
4: 160

????????????

 

If you did the test properly and your valves are adjusted right, those numbers are low.

The engine needs to be warm for the test, pull the ecu fuse out and hold down the gas pedal while cranking, crank the motor about 8-10 times.

My '95 turbo Si tested at 210, 210, 210, 195.

 

yea.. i found out about the engine temp and the wot.. after reading some info i thought that it was low.. i will do the test again and hope for the best... thanks