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Car smokes at startup

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inthemidst

10+ Year Contributor
363
23
Aug 25, 2009
PALMDALE, California
I just put new rings valve stem seals resurfaced head torqued head to 80 ft lbs arp head studs with a felpro head gasket in three steps and my car smokes a nice puff on start up for about 2 seconds and gos away.im stumped?????
 
Does not do it every time you start it? If something was leaking it may just be burning off leftover oil that didn't get cleaned out. Other than that maybe turbo oil seals? I'm not all that knowledgeable about the turbo seals though, I would think they would smoke all the time if they are bad.
 
Well I know it's the one bottom center only that is thru the oil passage and I put rtv to b sure so I know it's not that. And it does smoke less when I rev it but at idle no smoke.
 
And yes every time I start it cold it's smokes a lot more than when hot.
 
How many miles on it since you did the head?

How were the exhaust guides in the head? If you have bad guides the new seals will slow it down some.
 
The head has bronze guides all around and I checked them for excess play I did buy the seals from eBay though don't know if maybe that's why. And it doesn't have any miles I haven't drove it.
 
I just sat their and revved at 3k and the hotter it got the more it smoked any ideas???
 
Somewhere on here I read that if not broken in its possible for it to smoke????
 
Are they blue Vition valve seals?

Also You replaced the rings. How did you hone the cylinder bores?

What rings did you use?
 
Guide clearance is important. We've replaced seals before but sloppy guides ate them up in a few weeks. Just throwing that out there like Bogus was stating.
 
Its rare, but happens, When the old guides were removed, the the guide bores got a bit gaulled up and the when the new bronze guides were installed they did not seal on the OD of the guide, allowing oil to pass between the the guide OD and the head casting.
 
I remembered I put some old gas that was in oil jugs I'm thinking maybe some of the oil mixed with the old gas and because the old gas isn't burning properly the oil gets left behind in the cylinders until it starts to get hot then it starts burning the oil and I get smoke? Make sense or its something else .
 
And my compression 170,150,150,142 order 1234 that threw me off don't know if that's normal on a new rebuilt engine.
 
Let me be more specific at cold start my car smokes a lot then goes away. If I start reving it the hotter it gets the more it smokes and if I let it idle again it goes away????
 
It could possibly be where the old valve stem seals were removed but a little rubber o-ring type piece was left behind and it's keeping the new seals from completely sealing. Just a thought.
thats what im thinking, not sealing properly, allowing oil in, then it burns off at start up.

this will produce white or greyish white smoke
 
What about running an external oil cooler and feeding a 14b turbo from the ofh without coolant lines on the turbo and yes I do have a turbo timer would this be the problem of white smoke.
 
No not really normally white smoke is oil burning and black is gas not burning completely.

I think you have oil getting into the cylinder from some point, if it started after the work was done it's probably a error in the rebuild.

It might just be excess lube or oil, from the stuff done, how long has it been smoking after the work?
 
When I rebuild motors I see white smoke for up to a few weeks, then it fades out, it's excess lube/oil.

Clears up, and then it's fine
 
Yes. I honed it and yes I'm sure I pt rings on properly. So you guys saying running a 14b turbo from ofh without oil pressure restrictor should not cause my car to smoke???
 
Oil smoke is a light blue

Coolant/water is white

Rich is grey/black

I doubt you have part of the old valve seal stuck the valve stem, only time I have seen that is when the engine caught on fire and melted the seals.

You have better odds of flubbing the seal install, and side loading one side of the seal allowing oil to get pass.

#4 cylinder compression is a tad low, but not horrid bad.

How much oil pressure or you feeding the turbo? you could blow the seals out with too much.

At start up you have a pool of oil that burns off, then when you rev it the seals may expand causing the smoke to die down until at idle the seal contracts and allows oil by.

If this is the case, you should find wet oil in the exhaust, drop the down pipe and take a look.

If you flubbed the seal install, you would have wet oil in the runners, pull the exhaust mani and look.
 
I just removed my upper boost pipe the one that connects to throttle body to check for oil and none but I did find what looks like sugar or salt crystals in the pipe any idea where are these crystals coming from. And if I run the car for at least an hour and shut it off and start the next day I get no smoke on start up but if I run it for like 5-10 min and shit it off I get a lot of smoke on a cold start??????????
 
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