Milky engine oil and white smoke at start up on 3.5L v6 petrol (G6DC) Grand Carnival - Kia Forum
 
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post #1 of 3 (permalink) Old 06-14-2019, 10:23 PM Thread Starter
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Unhappy Milky engine oil and white smoke at start up on 3.5L v6 petrol (G6DC) Grand Carnival

Hi there,
I'm new here and hoping to get some help.
Just bought a used 2013 Grand Carnival / Sedona with 3.5L v6 petrol engine with 107,000 kms.
Engine code is G6DC.

Really dissapointed as there is thick white smoke at start up for about 5 secs.
Discovered coolant on oil cap. There is milky goo on cap and in engine.
Coolant reservoir is low. Haven't driven much but not overheating yet.

Mechanic replaced PCV valve which fixed blue smoke problem but says need to swap engine out which will cost around $7k Aud for a wrecker engine. Ouch!
I've taken car back as don't trust his recommendation as he hasn't done tests to find out cause of coolant in engine oil.

Has anyone come across this problem and do you think needs new engine?
Any help is much appreciated.

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post #2 of 3 (permalink) Old 06-15-2019, 03:01 AM
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Hi, You seem to know what the answer is going to be... is either has or has had a head gasket blow, the oil is under more pressure than the water which is why the oil has crossed to the water. You may also have bubbles in the overflow tank with the engine running. I at least would get the cooling system pressure tested to confirm the leak.

I do not know what part of Australia you are in so prices will vary for wreckers but a quick look at ebay and a reco could be found for $4490. Used seem more like $5000 - $5500 from a local wrecker might be better.

As for swapping an engine while not technical is still labour intensive the last carnival swap I did at home took 2 days. so $7000 A bit around the money if not a bit high.

Brian
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post #3 of 3 (permalink) Old 06-15-2019, 08:03 PM Thread Starter
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Thanks Bobpo and appreciate your help with reply.

Will weigh up between repairing and replacing engine when quotes come through.
107,000kms seems fairly low to replace engine.

Do you know if these engines have good longevity?

Kind Regards
One Dollar
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