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Old 04-30-2007, 08:40 AM
67l78 67l78 is offline
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Default Re: HELP! 66 corvette fuel problem

Thanks for the quick reply guys!!
So I could have 2 problems, 1 the fuel pump diaphrahm and 2 a rich carb.
Why so much fuel all over the top of the fuel pump and on the garage floor? What about the small puddle on the intake just below throttle arm (driver side)?
I should change the oil now? or just before I fire it again? Thanks again guys!
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Old 04-30-2007, 09:37 AM
Charley Lillard Charley Lillard is offline
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Default Re: HELP! 66 corvette fuel problem

There is a little hole in the side of the fuel pump. When the diaphram goes bad it will weep stuff out of that hole. You could also have stuck float in the carb that could make it flood. A stuck float will let any pressure in the fuel line overflow the carb andf fill the intake, eventually making it's way into the cylinders and past the pistons into the oil. Drain the oil before you try to start the car again. If there is enough gas in the oil pan it can make a heck of a explosion.
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Old 04-30-2007, 03:38 PM
67l78 67l78 is offline
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Default Re: HELP! 66 corvette fuel problem

Thanks Charlie!! Wil try to work on this today and let you all know what happens. Thanks again.
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Old 05-01-2007, 02:00 AM
Paul D Paul D is offline
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Default Re: HELP! 66 corvette fuel problem

Although my guess is that the fuel pump diaphram is bad and/or the float is stuck, I once had a major smoking problem from a stuck choke (black, rich gas smoke), so you might check that also.
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Old 05-01-2007, 02:13 AM
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SS427 SS427 is offline
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Default Re: HELP! 66 corvette fuel problem

[ QUOTE ]
Drain the oil before you try to start the car again. If there is enough gas in the oil pan it can make a heck of a explosion.

[/ QUOTE ]

Been there, done that! It took out the oil pan, timing cover, internal parts of the Holley carb, both valve covers and several gaskets not the least to mention a fire. The A/C oil breather on the cover almost imprinted in my head as it preceded the valve cover by a few milliseconds. Not a pretty sight.
Rick
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Old 05-01-2007, 02:56 AM
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Xplantdad Xplantdad is offline
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Default Re: HELP! 66 corvette fuel problem

[ QUOTE ]
[ QUOTE ]
Drain the oil before you try to start the car again. If there is enough gas in the oil pan it can make a heck of a explosion.

[/ QUOTE ]

Been there, done that! It took out the oil pan, timing cover, internal parts of the Holley carb, both valve covers and several gaskets not the least to mention a fire. The A/C oil breather on the cover almost imprinted in my head as it preceded the valve cover by a few milliseconds. Not a pretty sight.
Rick

[/ QUOTE ]

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Old 05-01-2007, 08:45 AM
67l78 67l78 is offline
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Default Re: HELP! 66 corvette fuel problem

Thanks for the wealth of knowledge! I just finished rebuilding my holley carb. Havent attempted that since a teenager, went well though. The only things that stuck out during the carb rebuild was the rear needle and seat ass. looked like it was stuck closed and most of the screws in the whole carb seemed a little loose to me. Fuel pump will be here tomorrow. going to install carb, fuel pump and change the oil and see what happens? I would love to hear any more advice some may have on this issue! Thanks again!
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Old 05-01-2007, 09:36 AM
427king 427king is offline
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Default Re: HELP! 66 corvette fuel problem

<font class="small">Code:</font><hr /><pre> Been there, done that! It took out the oil pan, timing cover, internal parts of the Holley carb, both valve covers and several gaskets not the least to mention a fire. The A/C oil breather on the cover almost imprinted in my head as it preceded the valve cover by a few milliseconds. Not a pretty sight.
Rick
</pre><hr /> Rick, Your problem was you didnt tighten the main caps to the proper specifications
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Old 05-02-2007, 07:01 AM
67l78 67l78 is offline
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Default Re: HELP! 66 corvette fuel problem

OK Guys, Im pretty bummed. I pulled the fuel pump and drained the oil. There was a lot of fuel in the oil!! Im not sure how much yet, havent measured the drain pan contents yet. Im afraid I may Have done damage to the engine. I sure hope not. Any thoughts on what to do next?? I was thinking about pulling the distributor and priming the oiling system while rotating the engine by hand to make sure everything has oil again before fireing her up. Any thoughts??
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Old 05-02-2007, 08:01 AM
Charley Lillard Charley Lillard is offline
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Default Re: HELP! 66 corvette fuel problem

If you are worried.. Cut the oil filter apart and look for metal. I wouldn't bother pulling the dist and priming the pump. Run it with new oil and then change it again.
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