need your help before taking engine out it smokes on hard accel did a lot of checking
11-14-2011, 05:44 PM
#1
need your help before taking engine out it smokes on hard accel did a lot of checking my engine smokes like a train under hard acceleration it burns oil also my dip tick sometimes pups out i think because of too much crankcase pressure i did a compression test and it was in the 180-190 i change the valve seals twice and did not help also i have a good catch can and it doesn't traps any oil not a single drop car dyno 489 and it runs like champ. Im tire of the smoke and planing to take the engine out and install new rings my old gap is top 19 second 22 top Ring Material Ductile iron Top Ring Facing Material Moly Second Ring Material Iron Second Ring Facing Material Cast iron
Do i have bad rings or do i need a vacuum pump to remove crankcase pressure or why do you think my engine smokes???
Do i have bad rings or do i need a vacuum pump to remove crankcase pressure or why do you think my engine smokes???
11-14-2011, 06:43 PM
#3
11-14-2011, 10:26 PM
#5
10 Second Club
I had somewhat the same problem. My car had been parked for awhile with the 10 bolt out of it and I would start it occasionally. One day I started it, it smoked like a dozer. I thought for sure a ring was broke but I didn't understand why one day it ran fine and the next day it would smoke even at a idle. Turned out my PCV valve was stuck. All I done was took it out cleaned it and put it back and it didn't smoke a drop. Try changing the valve and let us know what happens.
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11-15-2011, 08:08 AM
#8
11-15-2011, 06:51 PM
#10
Change back. 20W-50 does not reach high enough temp while street driving to get down to proper viscocity of 70 SUS. Aren't getting sufficient lubrication. Save the 20W-50 for road course use when oil temps get 250*F+.
As a test, you can put breathers in the valve covers, as long as you disconnect the PCV & plug the vacuum port. If you don't disconnect & plug, it will run leaner (unmeasured air will be entering engine). Anyway, can see if condition improves while using the breathers. If so, then can run either larger lines or 2 PCV lines to give crank pressure more space to exhale.
11-16-2011, 06:24 PM
#11
this morning i did a compression test again just to be sure of my readings with another gauge and they were in the 185-190 so i re-install everything else back and took it for a test drive i did 2 hard pulls and a saw big clouds of black smoke and it burnt half a qt of engine oil!! so i think is running to rich?? also my oil turned from new to dark
11-16-2011, 10:20 PM
#12
10 Second Club
If it is running rich I sitll don't understand where the oil is going. What about taking the oil filler cap off and driving the car. Wouldn't that let the pressure out? You could tape a paper towel or a thin rag around the oil snout just to test it maybe??? I would think that would be the same as a breather. Or just take it off and hold a thin rag down around it and rev it up to see if it still smokes. It would have to be in the PCV system. It turning dark probably isn't anything. If I run a KandN filter for 15 minutes my oil turns black with a paper one it doesn't. I don't think the K and N catches the fine dust particles. Hope you figure it out.
11-17-2011, 07:24 AM
#14
If it is running rich I sitll don't understand where the oil is going. What about taking the oil filler cap off and driving the car. Wouldn't that let the pressure out? You could tape a paper towel or a thin rag around the oil snout just to test it maybe??? I would think that would be the same as a breather. Or just take it off and hold a thin rag down around it and rev it up to see if it still smokes. It would have to be in the PCV system. It turning dark probably isn't anything. If I run a KandN filter for 15 minutes my oil turns black with a paper one it doesn't. I don't think the K and N catches the fine dust particles. Hope you figure it out.
Only the same if the vacuum port on the intake is plugged (after removing PCV hose from it). Otherwise, will cause a huge vacuum leak.
09camaro383,
We've explained the issue. It will continue until you give the pressure some place to go. Add a second PCV line or go to breathers.
Options:
-Can use breathers & maintain stock PCV routing through manifold vacuum if MAF table is re-scaled for it. Otherwise, will run more lean.
-Can use breathers & disconnect & plug vacuum to manifold (not recommended).
-Can add a second PCV line.
11-29-2011, 07:37 PM
#15
im still having problem with my engine i added a second pcv line and did not help! i remove the oil filler cap with the engine runing and saw white smoke coming out it also smells like gasoline i also saw white smokes coming from my exhaust it has a very strong smell like gas vapors!! i did rev my engine with the oil cap off and it has a strong vacuum the white smoke went away but was smoking from exhaust is my car runing too rich??
01-10-2012, 07:11 PM
#18
update i bought the breather and it did not help so i got 
and i took the engine out this weekend and found a oil control ring on the bottom of the oil pan can someone tell me how can this happen also is my cylinder wall still good or is the block junk?? also i want to thank everyone in here for your help and ideas!
and i took the engine out this weekend and found a oil control ring on the bottom of the oil pan can someone tell me how can this happen also is my cylinder wall still good or is the block junk?? also i want to thank everyone in here for your help and ideas! 
