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Old 04-06-2010, 12:49 PM   #1
GKsport67
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Question Rusty Foam!!

Hey guys my truck radiator is foaming rusty foam after i've cleaned & flushed it out. It doesn't run hot & the water pump is working fine. Any body cal tell me whats the deal with this?
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Old 04-06-2010, 01:03 PM   #2
cdowns
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Re: Rusty Foam!!

it probally ran for a long period of time with water in it and not antifreeze
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Old 04-06-2010, 01:07 PM   #3
Longhorn Man
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Re: Rusty Foam!!

the bottom of the water jackets in the block are filled with rusty sludge. You can keep flushing it every month for 10 years and never get it all.
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Old 04-06-2010, 01:22 PM   #4
GKsport67
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Re: Rusty Foam!!

Quote:
Originally Posted by Longhorn Man View Post
the bottom of the water jackets in the block are filled with rusty sludge. You can keep flushing it every month for 10 years and never get it all.
Really? Will it cause any problems?
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Old 04-07-2010, 12:12 AM   #5
joeelutz
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Re: Rusty Foam!!

I had a similar problem with an 87 Chevy. Turns out the stock steel head gaskets were rusting away.
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