Compression test done, now what

[glittle75]

ok, so i have a 138k 1998 GT.

its started to puff a little white cloud when you accelerate from a stop. just for a second, and not enough to see in the mirrors.
also, it chatters a little under a heavy load, but only when warm, if the car isnt to operating temp. it wont make a sound, but as soon as it gets warm it will chatter in O/D (forgot, yeah its an auto) if you give it throttle, but not enough to downshift, it chatters like a champ when warm.

i cant make it chatter when warm and idling like in the driveway giving it throttle, has to be under a decent load. but other than that, it runs like a champ, never had a problem with it, and it doesnt use enough oil between changes to notice.

either way, heres some pics, any and all help / input is appreciated.

Compression Results

spark plug from different angles.

also, all 8 plugs look just like this one. dark at the base, and a little grey/white on the strap. no wet oil on the "in cylinder" part of the plug, but on the lip of the threads, there is a little bit of residual oil.

maybe you guys can help me, im tired of the chatter, and want to run my car, it hasnt seen more than 3k RPM in a few months becasue of this.

 

[glittle75]

also, compression test was done with motor at operating temp (after my 25 min commute home) with one plug out at a time, throttle held open, and cranked for 5 seconds, fully charged battery.

 

[GDTrumbo]

Always perform a compression test with all plugs out. The other 7 slow the crank speed down. Your #'s will be a touch low.
My auto mechanics instructor would have pulled his hair out. The #'s still look pretty consistant though.

GT

 

[cmher18]

All plugs out and do it when the motor is cold