PINKS

This is a brand new rebuilt d16a6 motor, total bottom end is 100% new with new parts, the head is completely built and was previously used for 4500 miles and then slapped on my motor.
The car ran great for the first 3K or so Ive had it and just recently I noticed that after the car is fully warmed up and you go for a drive. Come to a stop or slow down hard, the car will kind of billow smoke. Not to heavy but enough to surround the car and into the cabin a bit.

Smelt like burning oil so I pulled the plugs, sure enough #3 was SOAKED, a good 1/2 teaspoon all up the threads and on the tip of the plug.

I did some research and found that the valve cover gromets like to fail on people, picked up a brand new set and threw em in, didnt work.

Now this problem doesnt seem to be constant, the car has gone a day before without smoking, but today it smoked at almost every full stop.

It will not smoke if you start the car up from cold and let it idle, no smoke at all.

Im lost on what it could be or how I could fix it.

HamiltonRex

First thing.

Do a compression and leakdown test.

PINKS

Dont have a leakdown tester

What would that show?

komat

it will see if see the following things if its leaking valves,headgasket,rings,valve seals and probably couple others. too lazy to think of it:-D

PINKS

Motor is new and rebuilt, I doubt its anything in the block

Valve cover grommet are new, not them

Headgasket is new with arp studs and copperspray

Valve seals I dont know, they were new 8k miles ago

PINKS

bump

5thgenusmc

My car was doing something similar, did a leakdown test and confirmed my rings were bad in one cylinder. If it happens on deceleration it could also be your valve stem seals on the head as well. Id do a leakdown test as someone stated above for sure then go from there. good luck

PINKS

Well Theres oil on the dam threads of the spark plug, to me that mens its coming from the top.... right?

I did just replace the valve cover orings though so I cant see that being the problem, would teflon do anything there or would it just burn up?

BoostedEG6

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PINKS &raquo;</TD></TR><TR><TD CLASS="quote">Motor is new and rebuilt, I doubt its anything in the block

Valve cover grommet are new, not them

Headgasket is new with arp studs and copperspray

Valve seals I dont know, they were new 8k miles ago</TD></TR></TABLE>

Just because the motor is new and rebuilt doesnt mean that is wasnt rebuild properly. do a leakdown and that will let you know what is wrong

it sounds like you have a bad valve seal to me

alpha

Have a catch can? I had this happen on an engine. Not saying it's happening with your's. So much crank case pressure it was pushing through the seals. Installed catch can and nuff said

PINKS

Running the valve cover open and the block has the black box on the back and thats vented open

Aint no pressure

nonvtecD

Is there oil all over the spark plug wire that connects to the plug? If the spark plug seals are upside down that will do it.

Weq

valve stem sels. rebuilt it before u get oil contaminationa dn destroy all ur pistons like mine did.. oil = low octane.

PINKS

Are they hard to change?

Im gonna swap in another valve cover tonight with a new gasket. Hope that does something but I highly doubt it

What else could it be?

PINKS

bump, compression test and new valve cover will be done tonight

oscarmayer

possible busted ringland (broken piston).

eitehr way the motor needs to be torn down.

notoriousB

compression test and get back with results. rebuilt with stock pistons?

nonvtecD

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by oscarmayer &raquo;</TD></TR><TR><TD CLASS="quote">possible busted ringland (broken piston).

eitehr way the motor needs to be torn down.</TD></TR></TABLE>

ha, it's definitely not time for a rebuild yet , he hasn't given us much of any information yet.

Hybrid96EK

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PINKS &raquo;</TD></TR><TR><TD CLASS="quote">Are they hard to change?

Im gonna swap in another valve cover tonight with a new gasket. Hope that does something but I highly doubt it

What else could it be?</TD></TR></TABLE>

Its not the valve cover. Its not the valvecover gasket. Think about things a little and quit being close minded... and YES, you ARE being close minded by assuming that because the block was just rebuilt that it CAN'T be anything in the block. This is not the correct way to look at things...

1). You have oil all over the spark plug
2). Your engine is smoking

That right there CONFIRMS that oil is entering the combustion chamber, and at a decent rate. If the oil WAS leaking past the past the valve cover spark plug tube seals, it would be at a slow rate. Even slower once it had to work its way down through the threads of the spark plug... which I don't think it even could.

Now, go do a compression test. Then come on here and post the rediculously low numbers in the #3 so we can tell you you fried either the rings or the ring lands.

Also, when you post this info, also include the following. You said the motor was rebuilt, but was it rebuilt with stock parts? Forged pistons? what? Also, did you tune it or just slap boost on it and go?

PINKS

Yes I understand oil is getting in the combustions chamber, but if you read when it may change your mind where its coming from

If I start the car cold it will NOT smoke, when driving around under boost or vacuum it will NOT smoke. It only smokes OCCASIONALLY (about every 3rd time I stop) when i come to a hard stop and sometimes when just coming to a slow stop, once I start moving again, it goes away.....

Im going to do a compression test in 10 minutes

The motor was rebuilt with vitara pistons and eagle rods, head is fully built with aftermarket parts

komat

i would recommend getting it leakdown instead of compression testing it

PINKS

Dont have one available

tegedrex

Results of the leak down?
Less typing more wrenching

Hybrid96EK

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PINKS &raquo;</TD></TR><TR><TD CLASS="quote">Yes I understand oil is getting in the combustions chamber, but if you read when it may change your mind where its coming from

If I start the car cold it will NOT smoke, when driving around under boost or vacuum it will NOT smoke. It only smokes OCCASIONALLY (about every 3rd time I stop) when i come to a hard stop and sometimes when just coming to a slow stop, once I start moving again, it goes away.....

Im going to do a compression test in 10 minutes

The motor was rebuilt with vitara pistons and eagle rods, head is fully built with aftermarket parts</TD></TR></TABLE>

I still think the problem is in the lower end. Do the compression test. Since you don't have a leak down tester available, its a starting point... lets see the results of the comp test.....

PINKS

Compression Test Results - 130 - 130 - 130 - 130

Damn that made me smile seeing those numbers , whether they mean something or not

I really would like to know how oil is getting all over my dam spark plug though