Celica Compression

[Its_Jay]

Gday, if anyone knows what the compression of each cylinder of a 1990 celica SX (5sfe) would be great, my car is 293 xxxkms and i think it may be out on compression does anyone know any ways to tell by driving if the car may have loss of compression?

any help would be sick

:)

Edited June 9, 2011 by Its_Jay

[SuperDave]

Drop into supercheap/repco/autobarn/etc and ask for a compression tester.

With the engine up to temperature (and off) disconnect the spark plugs and remove 1 plug at a time. Connect the compression tester to where the spark plug was and crank the engine a couple times until the needle stops jumping on the tester. Move through the cylinders.

If there is more than a 15PSI difference between cylinders it isn't ideal. But the main thing is to check for a massive drop from what it should be. Ideal on that engine is 180+PSI, minimum is 140PSI.

Usual signs of low compression can be low power and/or high oil consumption.

[Its_Jay]

Drop into supercheap/repco/autobarn/etc and ask for a compression tester.

With the engine up to temperature (and off) disconnect the spark plugs and remove 1 plug at a time. Connect the compression tester to where the spark plug was and crank the engine a couple times until the needle stops jumping on the tester. Move through the cylinders.

If there is more than a 15PSI difference between cylinders it isn't ideal. But the main thing is to check for a massive drop from what it should be. Ideal on that engine is 180+PSI, minimum is 140PSI.

Usual signs of low compression can be low power and/or high oil consumption.

Yeah will do thanks mate! as its done near 300000kms i think it would be ideal to check.

if a cylinder is out,

it will need new pistons? or.. and is it best to do all 4 cylinders with new pistons or just the one that needs it. in my head it sounds smart to do all 4. haha

[Mole]

If the engine is cactus and needs to be rebuilt it'd be cheaper for you to get another Celica. Or if you can do it yourself just a new engine and pop that in.

[Its_Jay]

If the engine is cactus and needs to be rebuilt it'd be cheaper for you to get another Celica. Or if you can do it yourself just a new engine and pop that in.

Yeah, it would be i dont think it is the engine runs quite well just thought i might get a test done jus to be safe then sorry