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Blue smoke? Only after short time on idle


Noz

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Had a spirited drive and now after tick over for a short time I begin getting quite a lot of blue smoke.

 

Now. That tells me oil. But I'm after driving a short distance home and it going away. I'm uncertain why it only happens when I'm at idle.

 

Then it vanishes.

 

Any ideas?

 

I'm stood now it on idle and waiting. Nothings coming out (just moved it from driving back). Intermittent blue smoke on idle?

 

I'm confuzzled.

 

Drove fine. Oil pressure ok. I'll check the engine over tomorrow when its light. For now. Experience welcomed.

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Had a spirited drive and now after tick over for a short time I begin getting quite a lot of blue smoke.

 

Now. That tells me oil. But I'm after driving a short distance home and it going away. I'm uncertain why it only happens when I'm at idle.

 

Then it vanishes.

 

Any ideas?

 

I'm stood now it on idle and waiting. Nothings coming out (just moved it from driving back). Intermittent blue smoke on idle?

 

I'm confuzzled.

 

Drove fine. Oil pressure ok. I'll check the engine over tomorrow when its light. For now. Experience welcomed.

 

check you spark plugs, can be bad valve seals.. what oil pressure do you have?

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5 bar ish.

 

Valve seals keeps coming up in multiple searches online. Just curious how valve seals are to blame from a leak during idle.

 

Anti lag doesnt help the turbo I know but that would surely be a constant smoking rather than just at low rpm

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I've had similar in the past with an old engine of mine that had "meh" cylinder ring seal. Noticed it whilst idling after beating the crap out of it on a dyno for a bit and got it nice and hot.

 

If smoke is blue then its burning inside combustion chamber, so it can only be rings on the way out or oil being pulled from the head. White smoke that smells foul would be oil burning on exhaust wheel of turbo.

 

Get a compression & leakdown test and that should indicate any issues with cylinder sealing.

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They can their is a thread somewhere where you put rope in the cylinder and then compress it to stop the valves falling into the cylinders

 

To honest mate I wouldn't even want to risk it. Maybe this is a good excuse to upgrade the cams?

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The exact symptoms mine had when the valve stem seals were due. Only happened when the car had been ideling and then i would blip the throttle and it would give a good puff of smoke. Changed the seals and perfect.

 

However i haven't heard of a ge engine needing VSS doing, maybe the addition of your turbo has heated them up and they just couldnt take the extra heat.

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Well, 600hp on a GE engine is likely to raise some not so typical wear and tear I suppose. I'm glad you've had a similar issue. I was worried it was a turbo seal or bottom end issue. Or head off situation.

 

But I can live with VSS being done.

 

I think anyone having head and valve work done should consider upgrading their stem seals for higher temperature ones. Considering it's clearly something that can go.

 

Though I'm beating myself up over it, who owns a single turbo and not enjoy the power every now and then.

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