Antifreeze Leaks

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Old 01-26-07, 02:45 PM
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Antifreeze Leaks

I have a 2002 Impala with 3.8 engine that is leaking antifreeze at the throttle body connection to the plentlum. Do you think that changing the gasket will stop the leak or will it need a new plentlum? Also when I change the gasket would I need to use extra red silicone on the surface? The leak is just a small amount, about a pint per month.
 
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Old 01-26-07, 04:29 PM
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If in deed it is the gasket, change it and just use gasket dressing. Be sure to clean all of the old gasket off.

Have you tried to tighten the bolts/nuts first?
 
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Old 01-26-07, 04:59 PM
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If, in fact, your Impala has a Buick motor in it.........and the intake plenum is plastic..........They DO have a tendency to split/crack .........They're not TOO expensive if i remember right......so take a GOOD look when you get it off.........


If it's a 3.4 it's probably another case of Intake Gasketitis
 
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Old 01-26-07, 05:57 PM
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leaky 3.8

It comes as a plenum set and they are not that expensive and they do not use any type of sealer for the gaskets the gaskets are a o-ring style so it is just a torque thing no sealer. Replace the whole thing it is the easiest and the best way to do so.
 
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Old 01-26-07, 09:03 PM
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Antifreeze leak

Yes I checked the bolts and they are tight. It is the same engine as a 97 Buick that I once owned, and it leaks a small amount of antifreeze also. I plan to remove the throttle body soon, but not the plentlum, if that is possible. Is that possible? The plenlum is made of plastic and the local Carquest has it in stock. How do I remove the injector lines?
 
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Old 01-27-07, 05:27 PM
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Go onto Autozone.com, plug in your make & model and it should have an illustration and directions.
I did notice that not ALL cars are listed.
 
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Old 01-28-07, 08:29 AM
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Originally Posted by muleskinner View Post
Yes I checked the bolts and they are tight. It is the same engine as a 97 Buick that I once owned, and it leaks a small amount of antifreeze also. I plan to remove the throttle body soon, but not the plentlum, if that is possible. Is that possible? The plenlum is made of plastic and the local Carquest has it in stock. How do I remove the injector lines?
You can remove the fuel lines by squeezing the plastic clips that hold it in place they are hard to see but htey are there and it wont do any good to just remove the throttle body just take the plenum off and fix it now with the kit it will take a coupe of hours and is pretty easy to do i just did one on my sisters pontiac yesterday. IF you are talking about the injector wiring plugins there is a blue plastic clip pull it up and then push in the black tab and pull up on the plug in.
 
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