[RESOLVED] Car still smokes, running out of ideas

[91 TSi GP]

Ok well I'm freaking out I officially hate dsms and am regretting ever getting involved (sometimes ). I'll just write everything i have encountered so far.

I rebuilt my motor (machine work, Bearing, Rings, Gaskets, ARP wherever neccessary, new oil pump, water pump, timing, everything..) Car was running awesome just needed tuned. Me and my friend got on it a lil and blew a huge cloud of smoke I was like shit i blew my head gasket already. So i replaced my head gasket and it was still smoking.. My next thought was maybe my valve seals are shot, So i replaced my valve seals still smoking. So then I found oil coming out of my turbo, so i bought a brand new turbo and still smoking.. hmm so now what, i have my practically brand new turbo rebuilt with all new bearings and seals.. and the bi*** is still smoking wtf. So then I think to myself well maybe my charge pipes and IC have oil in the still so i thoroughly clean them.

I went on vacation and came back and started at it again taking it for drives and what not and its not improving at all. Smokes like a freight train at idle and in lower rpms. I noticed that i had oil coming out of the hole on my BOV so I thought maybe I didnt get all the oil out of my IC so i pulled my charge pipe off today and there is no oil in there...

So these are the symptoms MAD smoke at idle and low rpms, oil coming out of BOV im assuming it has to be coming from the vacuum line from the intake mani but why? And i also have alot of blowby on a fresh motor? There is always oil on my spark plug cover around my oil filler cap and there is alot of air coming out of my valve cover. Someone please help and give me some more ideas..

 

[BIRDCLAWTSi]

did you break it in?

 

[asexton6969]

When I rebuilt my motor, it smoked like a banshee. Took it out and did the pulls on the highway with engine braking to "break in" the motor. Stopped smoking, I'm talking THICK smoke filled my barn and had to leave because it was so thick. Take her around the block and drive it a bit. (IF you haven't broken it in)

 

[96eclipzGsT]

You broke an oil ring on one of the pistons when you installed them.

 

[91 TSi GP]

You broke an oil ring on one of the pistons when you installed them.

this was what i was thinking in the back of my head but kind of tried not to think about it because i dont want to tear it apart again.... Do you think this would be a good culprit because i was thinking the same thing blahhhhh

 

[96eclipzGsT]

this was what i was thinking in the back of my head but kind of tried not to think about it because i dont want to tear it apart again.... Do you think this would be a good culprit because i was thinking the same thing blahhhhh

The pistons should go in with just a very lite tap with the end of a plastic hammer. If they didn't go in with one or two quick taps, then you more than likely broke an oil ring. It is easy to do. When I put mine in I hit one a little too hard and sheared the end on one. Luckly I have rebuilt enough motors to know what I did and pulled the piston back out as soon as it happened.

I car shouldn't ever smoke when you first rebuild it, unless you used a shit load of oil/lubricant on the cylinder walls to put the pistons in.

 

[91 TSi GP]

The pistons should go in with just a very lite tap with the end of a plastic hammer. If they didn't go in with one or two quick taps, then you more than likely broke an oil ring. It is easy to do. When I put mine in I hit one a little too hard and sheared the end on one. Luckly I have rebuilt enough motors to know what I did and pulled the piston back out as soon as it happened.

I car shouldn't ever smoke when you first rebuild it, unless you used a shit load of oil/lubricant on the cylinder walls to put the pistons in.

this is my 3rd motor and it seemed to go together easily but i have a feeling this is what happened. and the motor now has 150 miles on it so the assembly lube/ lubricant would be gone by now and i dont think it would produce that much smoke as what im having

 

[forcefed86]

Do a compression check on all cyls.

 

[jimmythesaint]

Do a compression check on all cyls.

You built three motors and didnt think to do a compression check even though you suspected the rings were possibly damaged during install? Ok well I agree with the post above, try a compression check and you should have your fears confirmed.

 

[talondave]

Ok well I agree with the post above, try a compression check and you should have your fears confirmed.

Atleast then you will know what cylinder the rings are damaged in..

 

[Awoler]

Oil on "spark plug cover" is a bad oil cap.

Lots of blow-by and lots of smoke at low rpm leads me to thing the rings. Either way a compression/leak down test will tell. But a search should tell you that blow-by is generaly caused by bad (improperly seated/broken in) rings.

Of course this also could be the cylinders being worn out or you have the wrong rings installed. I assume of course this isnt the problem since you have built several engines before.

 

[96eclipzGsT]

You have 2 compression rings and an oil ring. A compression test is not going to show you that the oil ring is broken.

 

[91 TSi GP]

Well this weekend i tore the motor out and tore it down expecting to find a broke piston ring, and i find 4 broken pistons! the ringlands were broken on all 4 pistons. it sucks but shit happens.

 

[96eclipzGsT]

Well this weekend i tore the motor out and tore it down expecting to find a broke piston ring, and i find 4 broken pistons! the ringlands were broken on all 4 pistons. it sucks but shit happens.

How in the world does that happen. Must be defective or install error. Is your block bored? If not I have some stock pistons that are brand new I could give ya.