Help?

How bad is the leak, and what part is it coming out? How many miles on the car? Any other mods? Don't know the PSI sorry. Someone with a 4g63 will have to answer that one.

the ecu has nothing to do with the oil coming out of your valve cover...replace the valve cover gasket and see if that fixes the problem, if your talking out compression numbers for the 4g63T anything around 155 or above is ok as long as they dont stray to far away from each other per cylinder. Im almost sure it's just your valve cover gasket.

Adam13059 said:

Anyone know why there could be oil coming out of my valve cover? I am assuming it could be a problem with the moron who owned the car before messing with the ECU but im not sure anyone have any ideas? anyone know how many psi per cylinder the 4g63 is supposed to have...thanks...

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Is oil coming out of the valve cover breather tube, or leaking past the gasket?

could just be the oil cap seal, or coming up through the valve cover bolt holes, ive had bolth problrms and it would pool up on top.

Where is it coming from? If is in the ''tool box'' on the valve cover, look for cracks. Could also be the oil cap seal like stated above.

If is in the ''tool box'' on the valve cover

the tool box coulnt of said it better