I have a lot of smoke coming out the exhaust. I changed the piston rings, head gasket, and sent the head out to get a valve job and get new valve seals. The piston walls appear to be ok. Anyone have any idea what this could be? PLEASE HELP.

Pete

 

It's blowby.

Blue - Blowby

Black - Running Rich

White - Coolant in oil.

 

blue is oil
white means it burning coolant
and yeah black is running rich i believe

 

Check your PCV and make sure it is working. A plugged PCV can cause over pressurization of the crank case which can lead to blow by and oil leaks. With the list of stuff you've already done that would be where I would start.

 

I know its oil burning already, but the PCV is fine. Anyone have any other ideas?


Pete

 

valve seals...

pretty common place to check...


try both a compression test and a leakdown test and you should have your answer from those results...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ZigenBallz &raquo;</TD></TR><TR><TD CLASS="quote">valve seals...

pretty common place to check...


try both a compression test and a leakdown test and you should have your answer from those results...</TD></TR></TABLE>

If it were the valve seals, it would only do it after startup.

 

I checked the PCV again, the hose was 50% pinched I chaged the hose. Do I have to let the car run for a while to fix the following?

I'm getting air pressure in the crankcase, I've heared that it could be a bad injector. I am not convinced. What you guys think could be causeing this air pressure? Also its like a white color smoke, that smells like gas. Its not the head gasket that has been changed.

Pete


Modified by Petekazel at 7:20 PM 7/13/2004

 

Blue smoke upon deceleration means worn valve guides or bad valve seals. High manifold vaccum draws oil past the guides into the combustion chamber.

Blue smoke when accelerating indicates bad/worn rings. Oil is drawn into the cylinder under load since vaccum in the cylinder is high from high piston speeds. If you are not getting excessive blow-by, oil control rings are bad. If blow-by is excessive, compression rings are worn.

 

It smokes while in idle and while you give it gas. The smoke smells like gas. Compression is around 160lbs accross all cylinders


Modified by Petekazel at 9:59 PM 7/13/2004

 

Was the engine overhauled or rebuilt? How many miles since then?

 

All I did to the engine was change the piston rings, head gasket, and I sent the head to a mechine shop to get a valve job and valve seals. Still after all that it is smoking like crazy. Now I am stuck and I have no idea what elce to do.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Justin Klemgold &raquo;</TD></TR><TR><TD CLASS="quote">

If it were the valve seals, it would only do it after startup.</TD></TR></TABLE>

As opposed to what? Before startup?


Did you hone the cylinders before replacing the rings? or did you just slap new rings in there without checking clearances or having a machine shop take a look at the cylinder walls?

 

The car smokes constantly cold, hot, night, day, holidays too lol.

we just replaced the rings and there was no damage on the cylinder walls. Let me ask you a question, when you have your car running, while the oil cap is open fo you feel air pressure comming out?

Let me know

Pete


Modified by Petekazel at 1:25 AM 7/15/2004

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ZigenBallz &raquo;</TD></TR><TR><TD CLASS="quote">

As opposed to what? Before startup?


</TD></TR></TABLE>

Yeah smartass....if it's the valve seals while the car is off, oil will seep down into the combustion chamber...the you start it up and it burns it off for a few seconds...get what I mean now? 1+1 = 2.

 

When you replace the rings you should hone the cylinders because they are not a true cylinder shape, the rings wear a shape into the cylinder that's not visible to the eye. There's probably gaps and the oil is getting thru there. Run a feeler gauge of varying thickness between the walls and the rings, you might find some tight spots and some that are more loose.

But at least yours is running, I can't get mine timed right...