Volvo 940 steaming and burning oil

[Breadcom]

Hello, recently my 940 lpt auto has started leaking and burning oil also burning water ?? I'm not sure how to describe.i recently drove 600 miles up country and back all was fine but the next day on the way to work was idling and huge cloud of white smoke came out of exhaust and engine bay and smell of burning oil, it was not hot and oil level fine but as soon as I moved off it stopped and also only happens when I floor it and then lift off and 2 seconds later white smoke comes out if exhaust.

It's loosing coolant I pretty sure it's not leaking, and it's just had a headgasket, also when take oil cap off loads of steam come out.it gas an oil catch can which is just full of water and these little yellow flakes

https://youtu.be/_lK71J1MfGU

If anyone has ideas it's much appreciated, thank you

[Forrest]

It looks like it’s dripping coolant. You need to try to spot where from.

Did you do the head gasket yourself or was it done professionally? Was the head skimmed. Were new bolts used?

The symptoms look like the head gasket has failed again but there are other places coolant could mix with oil. If you’ve got coolant leaking into the oil at any significant rate the oil level will rise and that could lead to it burning oil too.

If it’s burning oil in the engine bay it is not unusual for the turbo oil return pipe to leak after a head gasket job if new rubber seals are not used.

[Breadcom]

Thanks for replying, the Head was done and installed by a garage and was done with all new parts etc, also bearing on turbo has gone so could explain the burning oil but not water in oil ?? Maybe not sure
But could be the oil cooler .

[360beast]

What's going on with the pcv system at 31 seconds? It looks like the heater for the pcv system is routed to a catch can? What has been done at the pcv box as you could have excessive crank case pressure which won't be helping matters.

[Laird Scooby]

Did the garage change the oil and coolant?

Also from your description, the turbo cartridge needs replacing, the PCV system will need cleaned out thoroughly at least twice, once after you cure the oil/water mixing problem and again about a month after and then checked a month after that.

Have the head bolts been retorqued since the HG was fitted or did they use stretch bolts?

[Breadcom]

Thanks again, pcv system goes to a catch can which has now been replaced by a real one and not just a vodka bottle haha but that was all sealed but was filled with about 500ml if water in 150miles ish, and I'm sure the garage used good stuff and did it properly as it's been about 3ish months since the headgasket and has been 100% good untill now and no overheating and they did a full service and flushed the coolant system 😀

[230ina245]

Hi
It's not already been asked but is the oil milky? and what about the oil level on the dipstick? Is there oil and water on the stick as separate layers or have they mixed?
I couldn't tell from the you tube view inside the rocker cover what state the oil was in.
Tim

[lynns hubby]

I cant open the you tube link so forgive me if I am way off the mark.

The description "an oil catch can which is just full of water and these little yellow flakes" Are they yellow or copper coloured?

Sounds to me that someone previous has put a bottle of sealer in the system to hide a problem. Can't remember what its called but here is one out there with copper flakes in !!!

[griston64]

Originally Posted by Laird Scooby

Did the garage change the oil and coolant?

Also from your description, the turbo cartridge needs replacing, the PCV system will need cleaned out thoroughly at least twice, once after you cure the oil/water mixing problem and again about a month after and then checked a month after that.

Have the head bolts been retorqued since the HG was fitted or did they use stretch bolts?

It'll be stretch bolts on a 98 turbo Dave.

I hope the garage haven't chucked a bottle of sealant in as the copper flakes thing would worry me slightly

[Laird Scooby]

Originally Posted by griston64

It'll be stretch bolts on a 98 turbo Dave.

I hope the garage haven't chucked a bottle of sealant in as the copper flakes thing would worry me slightly

It certainly should be Mark but knowing that some garages will fit what's available to get it out of the workshop ASAP they may have taken a shortcut or possibly re-used the orignal stretch bolts. If either option was taken and the head bolts not tightened again after 600 miles (or perhaps the bolt holes in the head weren't cleaned out properly resulting in incorrect torque figures) then it's highly probabl that is the cause of the current HGF if that's what it is. Also if the original stretch bolts were re-used, there would be the added risk of shearing when re-torqued.

Worryingly you've voiced the other concern that crossed my mind - K-Seal if memory serves has copper flakes in it and claims to fix head gasket troubles. If the garage did that and got it mobile again and it's lasted past the usual 3 month/3000 mile guarantee from most (i use the term loosely) back street garages then the OP is snookered.