Inconsistant cylinder pressure on cyl #3

[OilPatch197]

a 1997 Pontiac Bonneville, 3800v6 it is missing on cyl #3.

Dad took it to autozone and they said "low cylinder pressure on #3

So he did a compression check, all cylinders reads around 180-190psi, but cylinder #3 he cannot get a consistant reading(it goes from 125-185, but always lower than the other cylinders)

He took off the valve cover and removed the rocker arm and checked to see if a spring was broken, rod bent or stuck open.

He didn't find anything.

So what do we do from here?

 

[skippy]

sounds like a bad valve,if plug isn't oil fouled that would be my first guess.pita factor and money.