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post #1 of 4 (permalink) Old Oct 14th, 01, 02:00 PM Thread Starter
Tech Team
Join Date: Oct 2000
Posts: 32

I have a 69 396-325hp. When I crank it in the mornings it spits out a black watery type substance out of one of the exhaust pipes and makes a pretty good mess in my garage. Is this normal or is there something wrong with the engine. It runs great.

ANDYSZ is offline  
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post #2 of 4 (permalink) Old Oct 14th, 01, 03:01 PM
Join Date: Aug 1998
Location: Waldorf Md. USA
Posts: 3,281

This is normal. It is just water from condensation in the exhaust system. All cars do it, you probably notice it more because yours is in the garage. Most newer cars are not as bad because of the better fuel management that fuel injection gives.
Keep on driving

Bill Koustenis
Advanced Automotive Machine
Waldorf Md
1971 Chevelle "Heavy Chevy" original owner
1973 Z-28 family car...Brother bought it new in 73
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post #3 of 4 (permalink) Old Oct 16th, 01, 06:56 AM
Senior Tech
Join Date: Jun 2000
Posts: 331

My chevelle does that same thing. Try parking in differnt spots to get a more uniform black floor.

Seriously, you might be running your carb to rich, causing more then usual carbon depostits in your exaust.
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post #4 of 4 (permalink) Old Oct 16th, 01, 09:28 PM
Senior Tech
Join Date: Jan 2001
Location: skiatook, ok
Posts: 3,692

I agree with all the that the weather is cooling down, you will probably notice this a lot more.

375hp 78 Chevy truck
77 Chevy Nova
95 Chevy Lumina 3.4L
and building a 78 Nova
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