Toyota Compression Testing??

[celica2004]

Hi There..

I want to test the compression of my 1993 Toyota corolla. I got that 2 months back... I got my compression tested from a mechanic the compressions are #1) 130 , #2) 110 , #3) 30 , #4) 130...

It seems that I need to check compression again now.. I got a compression tester from Autozone yesterday..

I am in need of help regarding how to test the compression of my engine..

Please write to me as soon as possible.. as i need to return the compression tester to Autozone by next week.

your answeres are highly apprececiated...

thanks,

New Corollate..

[cobrajet25]

Here is what you do with the 1990 models, the 1993 should be the same:

1) Warm up engine.

2) Remove spark plug wires and all four spark plugs.

3) Disconnect the connectors at the distributor (there should be two of them).

4) Disconnect the cold-start injector connector (on the front of the intake plenum).

5) Thread the tester CAREFULLY into the number one spark plug hole.

6) Crank the engine over for about 3-5 seconds (about ten revolutions) with the gas pedal FLOORED.

7) Record reading on gauge, and repeat for other cylinders.

8) Reconnect all connectors and replace plugs/wires.

Personally, I do this cycle twice and compare the readings to each other. It is not that difficult, and only takes about 1/2 hour if you are doing it for the first time. Let us know what you come up with. Regards, Aaron