the headgasket blew :(

[BigKriss]

I was outside just checking my engine bay and looked at the coolant and there was this brown sludge in there. I emptied the radiator and there was some oil in the coolant also. I only replaced the coolant about 6-8 weeks ago

so yeah I'm going to buy a headgasket set and replace it myself. the engine never overheated so I won't be getting it planed straight. I replaced the headgasket myself around 25,000kms ago

I was thinking of reusing the head bolts.

Okay I'll take pictures later.

[Tiger]

Are you sure those are not leftover oil and sludge from before you changed the headgasket? I would do test before I do the headgasket. Easiest is the CO dye detector on your coolant. Coolant system pressure test.

[whiskychaser]

Are you sure those are not leftover oil and sludge from before you changed the headgasket? I would do test before I do the headgasket. Easiest is the CO dye detector on your coolant. Coolant system pressure test.

x1
No overheating, no coolant loss, no mayo and no crap in the oil? I'd def be doing some checks before ripping the head off But if it does come to it, I'd have the head pressure tested and checked for true. I'd always use new bolts whatever the motor - I'd probably break an old one part way through the final torque sequence

[632 Regal]

+1 on new head bolts

I'd always use new bolts whatever the motor - I'd probably break an old one part way through the final torque sequence

[tim eh?]

good luck Kriss - +1 I don't think it's worth skimping on bolts ever esp. for that kind of thing... always new stuff.

[Mordan]

new bolts sucks when you bought them new a few miles before lol happened to me.

of course doing the headgasket on those M20s and M30s is a lot easier than on newer engines. once you have done it once, it is easier than most jobs.

[Paul in NZ]

mine had a blown headgasket Chris,seemed to have no symptoms at all apart from a miss at start up.....no oil in coolant,no coolant in oil,no overheating,no seemingly mad over pressurizing in system...slowly increasing coolant consumption.New headgasket,new rocker arms,she is good for another 250 000 kms now

[Martin in Bellevue]

Get a machinist's straight edge & check the deck surfaces.

[nirvana19]

I can't contribute to the diagnosis, but is there any reason the head gasket would blow after only 25k?

[Sixdown]

Get a machinist's straight edge & check the deck surfaces.

Right. It could be a warped head from previously or the gasket just wasn't installed correctly.