Smoke, Then No Smoke, Then....?

[RAYDEN]

Hi, I was wondering if anyone else has had this problem, my 33 was blowing a small amount of smoke for ages, it then started idleing lumpy, like i lost a cylinder, so i went the quick fix and put 2 iridiums in no.s 2 and 4, it ran great, and no more smoke!, i then changed the remaining 4 and had the miss back after one gear change, i pulled each plug out and found no. 6 black and wet so i replaced it, then as soon i got on boost and just after i got off boost heaps of smoke, thinking it may have been breather set up i moved a few things round because of my on going but newly magnified blow bi problem, no change. I then drove it 3 hours on the highway and it totally cleared up, no longer any smoke, but rough idle, adjusted air idle screw, then small amount of smoke, worried about idle still i dissconnected each coil plug.

and found 6 to be weak again, so replaced plug, now i got heaps of smoke but only on

decell, so dissconnected plug, no smoke and u guessed it rough idle. So iv worked out its

no. 6. So now knowing im fouling no. 6 and pumps out blue white smoke when connected is it, blow bi, scratched bore, valve issue, change to iridium plugs? Or just a unrelated sequence of events?

Edited December 28, 2010 by RAYDEN

[mad082]

blue/white smoke = oil = bad news. get a compression check done.

[SECURITY]

i'd be looking at how your PCV is set up. return your PCV to stock and see how you go then.

if its still doing it after you return your PCV set up to stock and its still only doing it on deceleration then i'd then be looking at your valve stem seals.