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dreed7235 03-11-10 10:20 AM

I have only used block sealant twice and both times it clogged my heater core.

bkenchan 03-11-10 10:41 AM

Hope previous owner didn't use block sealant and clog up the heater core. . . .looks like I need to flush it or replace.

Kentetsu 03-11-10 04:23 PM


Originally Posted by cab91089 (Post 9764207)
kentetsu is right, i used block sealant on my second gen but you have to be careful using that because it can clog your radiator and ruin your waterpump if you add too much. it also should only be temporary as you get a rebuild set up

Just to clarify this, the Alumaseal that I recommended is not a "Block Sealant". It consists of tiny flakes of aluminum, opposed to the big chunks of gunk you find in block sealants.

You are not required to drain or flush the system after use, or clean the system before use. It is compatible with coolants, and can be ran in the system full time.

After I used it a couple of years ago, I just left it in there as a preventive measure. I have never had an issue with my heater core, and believe me, living in Michigan I would have realized if it had. :)

spartan1o5 03-11-10 05:57 PM

But the thing is after my car has idled up, the car runs fine.

Chris_V 03-12-10 04:34 AM

I think you dont have aynthing to worry about...

Kentetsu 03-12-10 10:16 AM

It could be that you are leaking coolant into the "combustion chambers" after shutting her down. Or maybe an injector is leaking... Either issue could cause it to run rough until it cleans itself out. :)

gscherer 03-12-10 11:05 PM

im having this issue as well....if it even is an issue. it really only happens in the morning after its been in the garage all night.

after work or during lunch when i start it up it hardly does it at all so im going to assume its just condensation.

as for a smell, there is nothing irregular about it. smells like normal exhaust to me.

spartan1o5 03-16-10 12:02 AM

yea, sort of annoying and seems unhealthy...

spartan1o5 03-16-10 12:07 AM

With the heater core problem, my AC doesn't work. I haven't looked into it, but any help?

spartan1o5 03-16-10 12:29 AM

Could my start trouble be turbo related? Maybe a bad seal, and after the engine is warmed up the gasket could possibly seal it?


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