C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

What's causing this stain?

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Old Feb 24, 2002 | 08:57 PM
  #1  
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Default What's causing this stain?

Every time I clean the car, I need to clean off this stain under the hood. It looks like something's being thrown off the serpentine belt. The car never gets driven in the rain, so the liquid must be coming from somewhere in the engine compartment.

Any ideas?



Brad
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Old Feb 24, 2002 | 09:02 PM
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Default Re: What's causing this stain? (GS Ragtop)

Actually, it looks like a steam pressure spray. Check the hoses going into the throttle body and intake. It looks like a pin hole spray under high pressure. I don't think it's the belt because it would have an arc pattern.
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Old Feb 24, 2002 | 09:40 PM
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Default Re: What's causing this stain? (GS Ragtop)

It looks like uhh.... nevermind, can't say it. That would be immature :crazy: :D

I got mine w/ 8k miles, and checked underneath. I gaurantee you this previous owner never cleaned the engine once. I had that on mine, but it wasnt NEAR as bad. It was extremely light and very small. Maybe 1/10-20th less.
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Old Feb 24, 2002 | 09:48 PM
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Default Re: What's causing this stain? (GS Ragtop)

Water pump, happened to me and it happened to Mackey.
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Old Feb 24, 2002 | 09:50 PM
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Default Re: What's causing this stain? (Mr Mojo)

Water pump, happened to me and it happened to Mackey.
:yesnod: :yesnod: :yesnod: :yesnod:
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Old Feb 24, 2002 | 09:58 PM
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Default Re: What's causing this stain? (Mr Mojo)

Water pump, happened to me and it happened to Mackey.
Aw shucks. Looks like I'd better get busy before I need to add an OptiCrap to the shopping list.

Brad
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Old Feb 24, 2002 | 10:12 PM
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Default Re: What's causing this stain? (GS Ragtop)

Wouldn't hurt to do the opti while you are at it, how many miles?
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Old Feb 24, 2002 | 10:16 PM
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Default Re: What's causing this stain? (Mr Mojo)

'Bout 33K, adding about 3K per year. It stays a weekend warrior while I travel during the week. :cry

Brad
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Old Feb 24, 2002 | 10:27 PM
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Default Re: What's causing this stain? (GS Ragtop)

It could be coming from the air bleeds that are under the throttle body. There are two of them that you open when you fill the cooling system. They would act like a pin hole under high pressure if they are not tightened up. This would be better than the water pump to fix. Just a thought.
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