Question : Rough Idle cold start only 3400 V6 HELP!!!!!!

[Bens71442]

I changed my spark plugs on a 3400 V6; in a 2002 Oldsmobile Alero GL coupe

Auto lite Double Platinums were used; Part# APP 606

NO problems until this week, at #2,500 miles,# since NEW Plugs installed


PROBLEM is Rough Idle at COLD START UP ONLY.

NO surgeing or bouncing rpm

If engine rpm increased after 1500 rough run seems to smooth out

NO SES LIGHT as of yet.

ROUGH IDLE GOES COMPLETELY AWAY after 3 to 4 minutes of run time.

NO rough idle at warm or hot engine start up.

regurlary use Lucas FI CLeaner

[robertisaar]

run some seafoam through the brake booster line and get some ACDelco plugs....

3x00 motors don't seem to play well with anything else...