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Join Date: Sep 2008
Location: Nanton, Alberta
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i just replaced and rebuilt that engine, there are small holes on the pistons and yes they do get clogged and the oil ring gets all carboned up. now what i think would stop that from happening, is well starting with a fresh build engine, if the rings are in good condition just needs to be cleaned, clean them and the oil holes and reuse them, put them EXACTLY the way they came out (i havnt found a product that cleans rings, once they are carboned up i dont see how to get them clean again) So drive the damn thing hard!, the engine loves a hard workout, that means revving it to 6000-6500 or more RPMS (7000 is redline) before shifting, use good oil, keep an eye on it, it takes 15 seconds to check it., Every 1zzfe engine i worked on was all carboned. prevent this from happening.
What i did:
cleaned all pistons
made sure those piston holes are clean
cleaned the chamber walls and bottom of head valves.\
This one is a common blowing blue smoke problem and solution:
That PCV valve on the valve cover lets unburnt gases/air and such past it right back into the intake manifold for emissions. take the valve off and make sure it rattles first, blow into the hose side, you should not be able to blow through it, but if you blow through the other side you should be able to. If thats so, it works. clean the hose if its oiled up, turn the car on and spray alot of sensor safe intake cleaner into the intake to get that film of oil out of it which can cause blue smoke. I know this because it worked on mine.
A Reason why theres alot of oil past that pcv valve, hose and intake:
Too much oil in the engine, should be 3.8L not anymore.
Rings could be damaged allowing compression past
Last edited by Fergifruitchew; 08-25-2009 at 03:34 PM.