Attempting to diagnose a possible blown head gasket! Help!!

Aintezbeincheesy · Post by **Aintezbeincheesy** » 30 Sep 2017, 15:08

PeteB wrote: 30 Sep 2017, 14:54 I was very surprised to find this, and that it sometimes works. I'd think
that with the stress of a turbo it would not hold up:

I'm scared to death of putting sealants like that anywhere near my car. I've heard so many mixed reviews I don't even know what to believe anymore.

Post by **wizechatmgr** » 30 Sep 2017, 15:45

My view on sealants is this:
Do you plan on keeping the car for any length? If so, I wouldn't use the sealant.
Do you plan on junking the car? If so, try the sealant, at that point you're getting borrowed time if it works.

Post by **FLXC90** » 01 Oct 2017, 12:26

Aintezbeincheesy wrote: 30 Sep 2017, 14:11 Crossing my fingers that there could be ANY other way for oil and coolant to mix.

Yes, the oil cooler for your car is in the radiator tank. It is possible, but probably less likely than a HG failure.

That said, yeah, do it yourself, use the tracy's truesoaps tutorial found in the database, and you need to check the head first. the tolerance is pretty tight, so most likely, it will need to be trued. But you'll save a lot on labor!

Post by **rspi** » 01 Oct 2017, 20:56

First, before you start your drive, have you checked your coolant level? If full, I would replace the thermostat immediately with the proper VOLVO stat.

Second, if the temp tries to raise after that, replace the water pump the very next day. I have seen the impeller fall off of the water pump shaft.

If you have ANY coolant leaks, fix them.

PeteB · Post by **PeteB** » 02 Oct 2017, 09:05

wizechatmgr wrote: 30 Sep 2017, 15:45 My view on sealants is this:
Do you plan on keeping the car for any length? If so, I wouldn't use the sealant.
Do you plan on junking the car? If so, try the sealant, at that point you're getting borrowed time if it works.

Yes, I agree only try it as a last resort should have said this.

Post by **erikv11** » 02 Oct 2017, 10:00

Use sealant only as part of the disposal process, if you want to see if you can run it even though you are throwing it away. Those products are not related to trying to fix it.

Aintezbeincheesy · Post by **Aintezbeincheesy** » 05 Oct 2017, 18:56

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rspi wrote: 01 Oct 2017, 20:56 First, before you start your drive, have you checked your coolant level? If full, I would replace the thermostat immediately with the proper Volvo stat.

Second, if the temp tries to raise after that, replace the water pump the very next day. I have seen the impeller fall off of the water pump shaft.

If you have ANY coolant leaks, fix them.

Thanks Robert! Love your videos. Got me through a pcv system replacement relatively painlessly. Will make replacing the thermostat my next move!