67 327 rebuilt 650 holly bad fumes - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

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post #1 of 3 (permalink) Old Apr 24th, 03, 04:25 PM Thread Starter
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Join Date: Apr 2003
Location: massachusetts
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my 67 327 was professionally rebuilt 8 years ago. Still has zero miles on it. I just start it up every once in a while. Holly 650 was rebuilt one year ago. I just changed the oil again added some mystery oil to clean. When I start it up it's very bad fumes. Can't stand for long time. Burns your eyes. Could this be carb, or just not run enough?

67 RS 327 4sp
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post #2 of 3 (permalink) Old Apr 24th, 03, 04:41 PM
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Join Date: Apr 1999
Location: Fortuna, CA
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Sounds like a bad power valve... Old gas is real bad on carbs and may be causing a float to stick or a lot of other internal carb issues.

IMO you are slowly killing your engine. You need to get out and run it and get the temps up if you want that mill to live. Damaging moisture and contaminates collect in the oil and won't burn off unless your engine is run for about 20 minutes at operating temp. You'd be better off preping the engine for storage and putting it away until your ready for it.


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post #3 of 3 (permalink) Old Apr 27th, 03, 05:15 AM
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Location: Michigan
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Ditto on what Dennis says. Regarding the power valve it may just be the wrong one for your application. check your vacum at idle and then pull the power valve out and check the number. If it is not 2 inches higher than the vacum you have at idle it could be opening and causing the overly rich condition you mention. This is particularly a problem if you have a large duration camshaft and the carb wasn't set up to match.

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