8 replies to this topic

[Moto-guy93]

My car has been sat for about 1 1/2 years , I have white smoke at idle not much , when Revving lots!
but I haven’t had it running long enough to get it properly hot , I have also fitted a new carb.
I’m hoping this is due to overfueling.
im going to mess around with the mixture

Any tips ?

Edited by Moto-guy93, 15 March 2020 - 12:04 PM.

[panky]

If it has a servo check the vacuum pipe for brake fluid. The seals in the servo (or master cylinder seal in late model servos) can fail causing fluid to be drawn into the inlet manifold, the result can be lots of white smoke.

[RustyAutoCityE]

White smoke normally indicates water, check to make sure it is not loosing coolant after you have run it.

 

As you say it has been sat and not gotten up to temp, it could also just be condensation that has built up in the exhaust system and will clear once the engine has been run more.

[Moto-guy93]

No servo , coolant system I have checked and is ok no emulsification or loss of coolant
Condensation ? How long would we expect that to last ?
I was thinking to much air/fuel as In the smoke looks like a choke effect

Edited by Moto-guy93, 15 March 2020 - 01:07 PM.

[RustyAutoCityE]

Can you let the engine idle until it gets up to temperature?

 

You should see the smoke start to decrease as the engine warms up, but if you rev it it will probably get thicker again as the pressure pushes more water out.

 

You may also get a small puddle in the tip of the exhaust pipe/on the floor benath it.

 

My mini had not been run since before christmas, and even after being at normal temp for 20 mins on idle there was still water in the exhaust (I found that out when I took it off later in the day, as I am attempting the rear subframe.)

[panky]

Just a thought - was there any stale petrol on the tank when you started it?

[Rorf]

Get it on the road and drive it, so long as there is coolant in the radiator and oil in the gearbox/engine. Keep and eye on the temp gauge. Not sure what your ambient temps are but in the colder clims you are sure to have lots of white vapor from the exhaust

[blacktulip]

A good blast will see if it's a problem. I think it will clear up from experience

[Steve220]

Without taking it for a run and getting the oil nice and hot, you're not going to find out quickly what it is. I'm guessing condensation in the exhaust and moist air.