Smoke on hot start after being stood 45 mins

[Dunky Boy]

Had a good blast out today, stopped it for 1/2hr then started and put back in the garage then started again 45 mins later and it puffed some smoke out. Does this sound serious.

[nrick]

I am sure that Matt will be on in a minute, but mine does this if I get the oil really hot. Not ideal but I think it is fairly normal depending on the oil you use. It doesn't do it all the time just if the circumstances happen to be right. I am not that worried at the moment but you could do a leakdown or compression test to see. I am guessing there is some wear in the valve guides.

[dvs_dave]

Classic worn valve guides symptom. You can put some thicker oil in to reduce the symptoms, and it'll soldier on for a good few more miles. However it will only get worse.

This is how my engine went before I got a Power rebuild at 36k. It was up to using a liter of oil every 200 miles so was quite smokey One thing to watch though is that excess oil in the combustion chambers causes pinking/detonation which doesn't do your engine much good at all.

[m4tti]

Dunky Boy said:

Had a good blast out today, stopped it for 1/2hr then started and put back in the garage then started again 45 mins later and it puffed some smoke out. Does this sound serious.

Did you touch the throttle when starting it?

Does it smoke on hard acceleration?

Just keep an eye on your oil see how the consumption goes. Mine puffs some smoke on start occasionally just as Neil's mentioned, especially if the oil has got really hot. Mine had a top end rebuild.

Even if the guides are slightly warn it'll likely go on another 5 or 10k miles.



To be honest this is pretty common and I know other owners who have experienced it and their cars kept on going, didn't suddenly blow up, melt, turn into a monster.

Drive it, enjoy it, if it starts drinking oil get the head rebuilt.

Edited by m4tti on Saturday 8th June 12:49

[Dunky Boy]

Started it today and not a whiff of smoke. Must have been v hot oil. Thanks for the responses.

[nrick]

I would say 1L per 1000 miles is about average?

[Mattt]

nrick said:

I would say 1L per 1000 miles is about average?

I've heard that but mine doesn't really drink anything unless I really rev it hard, when it might need a small top up.

[TVR_owner]

The S6 uses oil depending on how hard it's used. Some use as little as 0.5 litres over 2 or 3 thousand miles.

1 litre per thousand on a tracked of hard driven car using 0 or 5 40 oil wouldn't keep me awake at night

[Firing order]

I would say about a litre every 1000 miles or so is normal if under hard acceleration or idle when hot then it may need checking, suns out enjoy it .