Compression test

[totta Crolla]

These are the compressions for my bluetop (psi)
cylinders 2,3,4 showing 125 and cylinder 1 showing 175
Any thoughts about the condition of the engine ??

[Rick]

Did you do the test when the motor was warm or cold?

How many cranks of the motor per cylinder did you do?

If the test was done when warm then this would be an indication of excessive carbon buildup in the engine. It can only be corrected by performing a chemical de-carbonizing process on the engine or by removing the cylinder head and physically removing the carbon that is attached to the cylinder portion of the head and the tops of the pistons.

Could also be blown head gasket.

[totta Crolla]

Rick Wrote:Did you do the test when the motor was warm or cold?

How many cranks of the motor per cylinder did you do?

If the test was done when warm then this would be an indication of excessive carbon buildup in the engine. It can only be corrected by performing a chemical de-carbonizing process on the engine or by removing the cylinder head and physically removing the carbon that is attached to the cylinder portion of the head and the tops of the pistons.

Could also be blown head gasket.

Test was done with a warm engine. Don't know how many cycles it went through though.
I intend to take the head off, is there anything to watch out for when doing this or is it fairly straightforward ?

[Ivan141]

taking the head off is pretty easy.. just remember to use one of those 12-sided sockets on the headbolts (size: metric 10), and keep track of what went where.