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Old 08-17-2012, 06:11 PM
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Problem with holley carb?

I took off my holley street avenger 670cfm with vac secondaries and adjusted the secondary transfer slots to where they look square. I put the carb back on and now it idles way too fast. I turn the idle screw all the way out and it has no effect. So I take the carb off and adjust the seconday transfer slots to where they were previously. I put the carb back on and it still idles way to fast. I now look at my fuel pressure gauge and it shows 0 pounds. Before all this it was 5-7lbs at idle. The initial timing is set at 16* with 38* all in by 3000rpms. What could have happened? Is this a sigh of a blown power valve? The car ran really good before I removed the carb. I just keep reading it was suggested to adjust the transfer slots until they look square. Any suggestions?










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Old 08-17-2012, 08:04 PM
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As the old saying goes "if it ain't broke, don't fix it". A blown power valve usually only happens during a backfire through the carb. If it has an automatic choke, check the linkage. As far as the "0" fuel pressure, if it runs, it has fuel pressure. Maybe a faulty gauge.
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Old 08-17-2012, 09:01 PM
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Id look at the choke linkage too, you may have the choke high idle cam stuck causing the fast idle.

That, or you created a vacuum leak somewhere when you removed the carb.(base gasket, or vacuum line)
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Old 08-18-2012, 07:28 AM
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he turned the carb upside down , sounds like what you said.
choke linkage
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Old 08-21-2012, 09:43 AM
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Quote:
Originally Posted by FmrStrtracer View Post
Id look at the choke linkage too, you may have the choke high idle cam stuck causing the fast idle.

That, or you created a vacuum leak somewhere when you removed the carb.(base gasket, or vacuum line)
Sorry for the late reply, I have been out of town. I worked on the Elky yesterday, and you guys were right, it was a stuck idle cam. Thanks for the help guys. And your correct, if it ain't broke, don't mess with it....
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Old 08-22-2012, 12:30 PM
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OK, the problem is back! I can't get the car to idle under 2000 rpm's. I removed the electric choke and it still idles at 2000rpm. I put a stiffer spring in the dizzy, thinking it was advancing to early, still idles at 2000rpm. I am really stumped. The only thing I did was remove the carb and adjust the secondary transfer slots to where they were square. Put the carb back on the car and had high idle issues. Pulled the carb back off and readjusted the transfer slots to stock location and put back on car. Still high idle at 2000rpm. Replaced the carb base gasket, no help. Checked the power valve, it is ok. I am really stumped. Talk about gremlins...Please help, any ideas!
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Old 08-22-2012, 04:16 PM
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May be a vacuum leak. Check around all hoses on the carb, carb gasket, etc. by spraying WD40 or carb cleaner around those items while it is idling. If the idle changes, you have a leak.
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Old 08-24-2012, 04:39 PM
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I changed the intake gasket-Problem solved.
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